CLINICAL PHARMACOLOGY
Mechanism Of Action
Simeprevir is a direct-acting antiviral (DAA) agent
against the hepatitis C virus [see Microbiology].
Pharmacodynamics
Cardiac Electrophysiology
In a thorough QT/QTc study in 60 healthy subjects,
simeprevir 150 mg (recommended dose) and 350 mg (2.3 times the recommended
dose) did not affect the QT/QTc interval.
Pharmacokinetics
The pharmacokinetic properties of simeprevir have been
evaluated in healthy adult subjects and in adult HCV-infected subjects. Plasma
Cmax and AUC increased more than dose-proportionally after multiple doses
between 75 mg and 200 mg once daily, with accumulation occurring following
repeated dosing. Steady-state was reached after 7 days of once-daily dosing.
Plasma exposure (AUC) of simeprevir in HCV-infected subjects was about 2-to
3-fold higher compared to that observed in HCV-uninfected subjects. Plasma Cmax
and AUC of simeprevir were similar during co-administration of simeprevir with
Peg-IFN-alfa and RBV compared with administration of simeprevir alone. In Phase
3 trials with Peg-IFN-alfa and RBV in HCV-infected subjects, the geometric mean
steady-state pre-dose plasma concentration was 1009 ng/mL (geometric
coefficient of variation [gCV] = 162%) and the geometric mean steady-state AUC24
was 39140 ng.h/mL (gCV = 98%).
Absorption
The mean absolute bioavailability of simeprevir following
a single oral 150 mg dose of OLYSIO in fed conditions is 62%. Maximum plasma
concentrations (Cmax) are typically achieved between 4 to 6 hours post-dose.
In vitro studies with human Caco-2 cells indicated that
simeprevir is a substrate of P-gp.
Effects of Food on Oral Absorption
Compared to intake without food, administration of
simeprevir with food to healthy subjects increased the AUC by 61% after a
high-fat, high-caloric breakfast (928 kcal) and by 69% after a normal-caloric
breakfast (533 kcal), and delayed the absorption by 1 hour and 1.5 hours,
respectively.
Distribution
Simeprevir is extensively bound to plasma proteins
(greater than 99.9%), primarily to albumin and, to a lesser extent, alfa 1-acid
glycoprotein. Plasma protein binding is not meaningfully altered in patients
with renal or hepatic impairment.
In animals, simeprevir is extensively distributed to gut
and liver (liver:blood ratio of 29:1 in rat) tissues. In vitro data and
physiologically-based pharmacokinetic modeling and simulations indicate that
hepatic uptake in humans is mediated by OATP1B1/3.
Metabolism
Simeprevir is metabolized in the liver. In vitro experiments
with human liver microsomes indicated that simeprevir primarily undergoes
oxidative metabolism by the hepatic CYP3A system. Involvement of CYP2C8 and
CYP2C19 cannot be excluded. Co-administration of OLYSIO with moderate or strong
inhibitors of CYP3A may significantly increase the plasma exposure of
simeprevir, and co-administration with moderate or strong inducers of CYP3A may
significantly reduce the plasma exposure of simeprevir [see DRUG
INTERACTIONS].
Following a single oral administration of 200 mg (1.3
times the recommended dosage) 14C-simeprevir to healthy subjects,
the majority of the radioactivity in plasma (mean: 83%) was accounted for by
unchanged drug and a small part of the radioactivity in plasma was related to
metabolites (none being major metabolites). Metabolites identified in feces
were formed via oxidation at the macrocyclic moiety or aromatic moiety or both
and by O-demethylation followed by oxidation.
Elimination
Elimination of simeprevir occurs via biliary excretion.
Renal clearance plays an insignificant role in its elimination. Following a
single oral administration of 200 mg 14C-simeprevir to healthy
subjects, on average 91% of the total radioactivity was recovered in feces.
Less than 1% of the administered dose was recovered in urine. Unchanged
simeprevir in feces accounted for on average 31% of the administered dose.
The terminal elimination half-life of simeprevir was 10
to 13 hours in HCV-uninfected subjects and 41 hours in HCV-infected subjects
receiving 200 mg (1.3 times the recommended dosage) of simeprevir.
Specific Populations
Geriatric Use
There is limited data on the use of OLYSIO in patients
aged 65 years and older. Age (18-73 years) had no clinically meaningful effect
on the pharmacokinetics of simeprevir based on a population pharmacokinetic
analysis of HCV-infected subjects treated with OLYSIO [see Use in Specific
Populations].
Renal Impairment
Compared to HCV-uninfected subjects with normal renal
function (classified using the Modification of Diet in Renal Disease [MDRD]
eGFR formula; eGFR greater than or equal to 80 mL/min) the mean steady-state
AUC of simeprevir was 62% higher in HCV-uninfected subjects with severe renal
impairment (eGFR below 30 mL/min).
In a population pharmacokinetic analysis of mild or
moderate renally impaired HCV-infected subjects treated with OLYSIO 150 mg once
daily, creatinine clearance was not found to influence the pharmacokinetic
parameters of simeprevir. It is therefore not expected that renal impairment
will have a clinically relevant effect on the exposure to simeprevir [see
Use in Specific Populations].
As simeprevir is highly bound to plasma proteins, it is
unlikely that it will be significantly removed by dialysis.
Hepatic Impairment
Compared to HCV-uninfected subjects with normal hepatic
function, the mean steady-state AUC of simeprevir was 2.4-fold higher in
HCV-uninfected subjects with moderate hepatic impairment (Child-Pugh Class B)
and 5.2-fold higher in HCV-uninfected subjects with severe hepatic impairment
(Child-Pugh Class C) [see Use in Specific Populations].
Based on a population pharmacokinetic analysis of
HCV-infected subjects with mild hepatic impairment (Child-Pugh Class A) treated
with OLYSIO, liver fibrosis stage did not have a clinically relevant effect on
the pharmacokinetics of simeprevir.
Gender, Body Weight, Body Mass Index
Gender, body weight or body mass index have no clinically
meaningful relevant effect on the pharmacokinetics of simeprevir based on a
population pharmacokinetic analysis of HCV-infected subjects treated with
OLYSIO.
Race
Population pharmacokinetic estimates of exposure of
simeprevir were comparable between Caucasian and Black/African American
HCV-infected subjects.
In a Phase 3 trial conducted in China and South Korea,
the mean plasma exposure of simeprevir in East Asian HCV-infected subjects was
2.1-fold higher compared to non-Asian HCV-infected subjects in a pooled Phase 3
population from global trials [see Use in Specific Populations].
Patients Co-infected with HIV-1
Simeprevir exposures were slightly lower in subjects with
HCV genotype 1 infection with HIV-1 co-infection compared to subjects with HCV
genotype 1 mono-infection. This difference is not considered to be clinically
meaningful.
Drug Interactions
[See also WARNINGS AND PRECAUTIONS and DRUG
INTERACTIONS]
In vitro studies indicated that simeprevir is a substrate
and mild inhibitor of CYP3A. Simeprevir does not affect CYP2C9, CYP2C19 or
CYP2D6 in vivo. Simeprevir does not induce CYP1A2 or CYP3A4 in vitro. In vivo,
simeprevir mildly inhibits the CYP1A2 activity and intestinal CYP3A4 activity,
while it does not affect hepatic CYP3A4 activity. Simeprevir is not a
clinically relevant inhibitor of cathepsin A enzyme activity.
In vitro, simeprevir is a substrate for P-gp, MRP2, BCRP,
OATP1B1/3 and OATP2B1; simeprevir inhibits the uptake transporters OATP1B1/3
and NTCP and the efflux transporters P-gp/MDR1, MRP2, BCRP and BSEP and does
not inhibit OCT2. The inhibitory effects of simeprevir on the bilirubin
transporters OATP1B1/3 and MRP2 likely contribute to clinical observations of
elevated bilirubin [see ADVERSE REACTIONS].
Simeprevir is transported into the liver by OATP1B1/3
where it undergoes metabolism by CYP3A. Based on results from in vivo studies,
co-administration of OLYSIO with moderate or strong inhibitors of CYP3A may
significantly increase the plasma exposure of simeprevir and co-administration
with moderate or strong inducers of CYP3A may significantly reduce the plasma
exposure of simeprevir, which may lead to loss of efficacy.
Drug interaction studies were performed in healthy adults
with simeprevir (at the recommended dose of 150 mg once daily unless otherwise
noted) and drugs likely to be co-administered or drugs commonly used as probes
for pharmacokinetic interactions. The effects of co-administration of other
drugs on the Cmax, AUC, and Cmin values of simeprevir are summarized in Table 9
(effect of other drugs on OLYSIO). The effect of co-administration of OLYSIO on
the Cmax, AUC, and Cmin values of other drugs are summarized in Table 10
(effect of OLYSIO on other drugs). For information regarding clinical
recommendations, see DRUG INTERACTIONS.
Table 9: Drug Interactions: Pharmacokinetic Parameters
for Simeprevir in the Presence of Co-administered Drugs
Co-administered Drug |
Dose (mg) and Schedule |
N |
Effect on * PK |
LS Mean Ratio (90% CI) of Simeprevir PK Parameters with/without Drug |
Drug |
Simeprevir |
Cmax |
AUC |
Cmin |
Cyclosporine† |
individualized dose* |
150 mg q.d. for 14 days |
9 |
↑ |
4.74 (3.12-7.18) |
5.81 (3.56-9.48) |
NA |
Erythromycin |
500 mg t.i.d. for 7 days |
150 mg q.d. for 7 days |
24 |
↑ |
4.53 (3.91-5.25) |
7.47 (6.41-8.70) |
12.74 (10.19-15.93) |
Escitalopram |
10 mg q.d. for 7 days |
150 mg q.d. for 7 days |
18 |
↓ |
0.80 (0.71-0.89) |
0.75 (0.68-0.83) |
0.68 (0.59-0.79) |
Rifampin |
600 mg q.d. for 7 days |
200 mg q.d. for 7 days |
18 |
↓ |
1.31 (1.03-1.66) |
0.52 (0.41-0.67) |
0.08 (0.06-0.11) |
Tacrolimus† |
individualized dose‡ |
150 mg q.d. for 14 days |
11 |
↑ |
1.79 (1.22-2.62) |
1.85 (1.18-2.91) |
NA |
Anti-HCV Drug |
Sofosbuvir# |
400 mg q.d. |
150 mg q.d. |
21 |
↔ |
0.96 (0.71-1.30) |
0.94 (0.67-1.33) |
NA |
Anti-HIV Drugs |
Darunavir/Ritonavir§ |
800/100 mg q.d. for 7 days |
50 mg and 150 mg q.d. for 7 days |
25 |
↑ |
1.79 (1.55-2.06) |
2.59 (2.15-3.11) |
4.58 (3.54-5.92) |
Efavirenz |
600 mg q.d. for 14 days |
150 mg q.d. for 14 days |
23 |
↓ |
0.49 (0.44-0.54) |
0.29 (0.26-0.33) |
0.09 (0.08-0.12) |
Raltegravir |
400 mg b.i.d. for 7 days |
150 mg q.d. for 7 days |
24 |
↔ |
0.93 (0.85-1.02) |
0.89 (0.81-0.98) |
0.86 (0.75-0.98) |
Rilpivirine |
25 mg q.d. for 11 days |
150 mg q.d. for 11 days |
21 |
↔ |
1.10 (0.97-1.26) |
1.06 (0.94-1.19) |
0.96 (0.83-1.11) |
Ritonavir |
100 mg b.i.d. for 15 days |
200 mg q.d. for 7 days |
12 |
↑ |
4.70 (3.84-5.76) |
7.18 (5.63-9.15) |
14.35 (10.29-20.01) |
Tenofovir disoproxil fumarate |
300 mg q.d. for 7 days |
150 mg q.d. for 7 days |
24 |
↓ |
0.85 (0.73-0.99) |
0.86 (0.76-0.98) |
0.93 (0.78-1.11) |
CI = Confidence Interval; N =
number of subjects with data; NA = not available; PK = pharmacokinetics; LS =
least square; q.d. = once daily; b.i.d. = twice daily; t.i.d. = three times a
day
* The direction of the arrow (↑ = increase, ↓ = decrease, ↔ =
no change) indicates the direction of the change in PK
(i.e., AUC).
† Comparison based on historic controls. Interim data from a Phase 2 trial in
combination with an investigational drug and RBV in HCV-infected post-liver
transplant patients.
‡ Individualized dose at the discretion of the physician, according to
local clinical practice.
# Comparison based on historic controls. The interaction between simeprevir and
sofosbuvir was evaluated in a pharmacokinetic substudy within a Phase 2 trial.
§The dose of OLYSIO in this interaction study was 50 mg when co-administered in
combination with darunavir/ritonavir compared to 150 mg once daily in the
OLYSIO alone treatment group. |
Table 10: Drug Interactions:
Pharmacokinetic Parameters for Co-administered Drugs in the Presence of OLYSIO
Co-administered Drug |
Dose (mg) and Schedule |
N |
Effect on * PK |
LS Mean Ratio (90% CI) of Co-Administered Drug PK Parameters with/without OLYSIO |
Drug |
Simeprevir |
Cmax |
AUC |
Cmin |
Atorvastatin |
40 mg single dose |
150 mg q.d. for 10 days |
18 |
↑ |
1.70(1.42-2.04) |
2.12(1.72-2.62) |
NA |
2-hydroxy-atorvastatin |
|
|
|
↑ |
1.98(1.70-2.31) |
2.29(2.08-2.52) |
NA |
Caffeine |
150 mg |
150 mg q.d. for 11 days |
16 |
↑ |
1.12 (1.06-1.19) |
1.26 (1.21-1.32) |
NA |
Cyclosporine |
100 mg single dose |
150 mg q.d. for 7 days |
14 |
↑ |
1.16 (1.07-1.26) |
1.19 (1.13-1.26) |
NA |
Dextromethorphan Dextrorphan |
30 mg |
150 mg q.d. for 11 days |
16 |
↔ |
1.21 (0.93-1.57) 1.03 (0.93-1.15) |
1.08 (0.87-1.35) 1.09 (1.03-1.15) |
NA NA |
Digoxin |
0.25 mg single dose |
150 mg q.d. for 7 days |
16 |
↑ |
1.31 (1.14-1.51) |
1.39 (1.16-1.67) |
NA |
Erythromycin |
500 mg t.i.d. for 7 days |
150 mg q.d. for 7 days |
24 |
↑ |
1.59 (1.23-2.05) |
1.90 (1.53-2.36) |
3.08 (2.54-3.73) |
Escitalopram |
10 mg q.d. for 7 days |
150 mg q.d. for 7 days |
17 |
↔ |
1.03 (0.99-1.07) |
1.00 (0.97-1.03) |
1.00 (0.95-1.05) |
Ethinyl estradiol (EE), co-administered with norethindrone
(NE) |
0.035 mg q.d. EE + 1 mg q.d. NE for 21 days |
150 mg q.d. for 10 days |
18 |
↔ |
1.18 (1.09-1.27) |
1.12 (1.05-1.20) |
1.00 (0.89-1.13) |
Midazolam (oral) |
0.075 mg/kg |
150 mg q.d. for 10 days |
16 |
↑ |
1.31 (1.19-1.45) |
1.45 (1.35-1.57) |
NA |
Midazolam (i.v.) |
0.025 mg/kg |
150 mg q.d. for 11 days |
16 |
↑ |
0.78 (0.52-1.17) |
1.10 (0.95-1.26) |
NA |
? R(-) methadone |
30-150 mg q.d., individualized dose |
150 mg q.d. for 7 days |
12 |
↔ |
1.03 (0.97-1.09) |
0.99 (0.91-1.09) |
1.02 (0.93-1.12) |
Norethindrone (NE), co-administered with EE |
0.035 mg q.d. EE + 1 mg q.d. NE for 21 days |
150 mg q.d. for 10 days |
18 |
↔ |
1.06 (0.99-1.14) |
1.15 (1.08-1.22) |
1.24 (1.13-1.35) |
Omeprazole |
40 mg single dose |
150 mg q.d. for 11 days |
16 |
↑ |
1.14 (0.93-1.39) |
1.21 (1.00-1.46) |
NA |
Rifampin 25-desacetyl-rifampin |
600 mg q.d. for 7 days |
200 mg q.d. for 7 days |
18 |
↔ |
0.92 (0.80-1.07) |
1.00 (0.93-1.08) |
NA |
17 |
↑ |
1.08 (0.98-1.19) |
1.24 (1.13-1.36) |
NA |
Rosuvastatin |
10 mg single dose |
150 mg q.d. for 7 days |
16 |
↑ |
3.17 (2.57-3.91) |
2.81 (2.34-3.37) |
NA |
Simvastatin Simvastatin acid |
40 mg single dose |
150 mg q.d. for 10 days |
18 |
↑ |
1.46 (1.17-1.82) |
1.51 (1.32-1.73) |
NA |
↑ |
3.03 (2.49-3.69) |
1.88 (1.63-2.17) |
NA |
Tacrolimus |
2 mg single dose |
150 mg q.d. for 7 days |
14 |
↓ |
0.76 (0.65-0.90) |
0.83 (0.59-1.16) |
NA |
S-Warfarin |
10 mg single dose |
150 mg q.d. for 11 days |
16 |
↔ |
1.00 (0.94-1.06) |
1.04 (1.00-1.07) |
NA |
Anti-HCV Drug |
Sofosbuvir‡ |
400 mg q.d. |
150 mg q.d. |
22 |
↑ |
1.91 (1.26-2.90) |
3.16 (2.25-4.44) |
NA |
GS-331007# |
↔ |
0.69 (0.52-0.93) |
1.09 (0.87-1.37) |
NA |
Anti-HIV Drugs |
Darunavir§ |
800 mg q.d. for 7 days |
50 mg q.d. for 7 days |
25 |
↑ |
1.04 (0.99-1.10) |
1.18 (1.11-1.25) |
1.31 (1.13-1.52) |
Ritonavir§ |
100 mg q.d. for 7 days |
|
|
↑ |
1.23 (1.14-1.32) |
1.32 (1.25-1.40) |
1.44 (1.30-1.61) |
Efavirenz |
600 mg q.d. for 14 days |
150 mg q.d. for 14 days |
23 |
↔ |
0.97 (0.89-1.06) |
0.90 (0.85-0.95) |
0.87 (0.81-0.93) |
Raltegravir |
400 mg b.i.d. for 7 days |
150 mg q.d. for 7 days |
24 |
↑ |
1.03 (0.78-1.36) |
1.08 (0.85-1.38) |
1.14 (0.97-1.36) |
Rilpivirine |
25 mg q.d. for 11 days |
150 mg q.d. for 11 days |
23 |
↔ |
1.04 (0.95-1.13) |
1.12 (1.05-1.19) |
1.25 (1.16-1.35) |
Tenofovir disoproxil fumarate |
300 mg q.d. for 7 days |
150 mg q.d. for 7 days |
24 |
↔ |
1.19 (1.10-1.30) |
1.18 (1.13-1.24) |
1.24 (1.15-1.33) |
CI = Confidence Interval; i.v.=
intravenous; N = number of subjects with data; NA = not available; PK =
pharmacokinetics; LS = least square; q.d. = once daily; b.i.d. = twice daily;
t.i.d. = three times a day
* The direction of the arrow (↑ = increase, ↓ = decrease, ↔ =
no change) indicates the direction of the change in PK
(i.e., AUC).
† The interaction between OLYSIO and the drug was evaluated in a
pharmacokinetic study in opioid-dependent adults on stable methadone
maintenance therapy.
‡ Comparison based on historic controls. The interaction between simeprevir and
sofosbuvir was evaluated in a pharmacokinetic substudy within a Phase 2
trial.
# Primary circulating metabolite of sofosbuvir.
§ The dose of OLYSIO in this interaction study was 50 mg when co-administered
in combination with darunavir/ritonavir which is
lower than the recommended 150 mg dose. |
Microbiology
Mechanism Of Action
Simeprevir is an inhibitor of
the HCV NS3/4A protease which is essential for viral replication. In a
biochemical assay simeprevir inhibited the proteolytic activity of recombinant
genotype 1a and 1b HCV NS3/4A proteases, with median Ki values of 0.5 nM and
1.4 nM, respectively.
Antiviral Activity
The median simeprevir EC50 and
EC90 values against a HCV genotype 1b replicon were 9.4 nM (7.05 ng/mL) and 19
nM (14.25 ng/mL), respectively. Chimeric replicons carrying NS3 sequences
derived from HCV protease inhibitor treatment-naïve genotype 1a-or genotype
1b-infected patients displayed median fold change (FC) in EC50 values of 1.4
(interquartile range, IQR: 0.8 to 11; N=78) and 0.4 (IQR: 0.3 to 0.7; N=59)
compared to reference genotype 1b replicon, respectively. Genotype 1a (N=33)
and 1b (N=2) isolates with a baseline Q80K polymorphism resulted in median FC
in simeprevir EC50 value of 11 (IQR: 7.4 to 13) and 8.4, respectively. Chimeric
replicons carrying NS3 sequences derived from HCV protease inhibitor
treatment-naïve genotype 4a-, 4d-, or 4r-infected patients displayed median FC
in EC50 values of 0.5 (IQR: 0.4 to 0.6; N=38), 0.4 (IQR: 0.2 to 0.5; N=24), and
1.6 (IQR: 0.7 to 4.5; N=8), compared to reference genotype 1b replicon,
respectively. A pooled analysis of chimeric replicons carrying the NS3
sequences from HCV protease inhibitor-naïve patients infected with other HCV genotype
4 subtypes, including 4c (N=1), 4e (N=2), 4f (N=3), 4h (N=3), 4k (N=1), 4o
(N=2), 4q (N=2), or unidentified subtype (N=7) displayed a median FC in EC50 value
of 0.7 (IQR: 0.5 to 1.1; N=21) compared to reference genotype 1b replicon. The
presence of 50% human serum reduced simeprevir replicon activity by 2.4-fold.
Combination of simeprevir with IFN, RBV, NS5A inhibitors, nucleoside analog
NS5B polymerase inhibitors or non-nucleoside analog NS5B polymerase
inhibitors, including NS5B thumb 1-, thumb 2-, and palm-domain targeting drugs,
was not antagonistic.
Resistance In Cell Culture
Resistance to simeprevir was characterized in HCV
genotype 1a and 1b replicon-containing cells. Ninety-six percent (96%) of
simeprevir-selected genotype 1 replicons carried one or multiple amino acid
substitutions at NS3 protease positions F43, Q80, R155, A156, and/or D168, with
substitutions at NS3 position D168 being most frequently observed (78%).
Additionally, resistance to simeprevir was evaluated in HCV genotype 1a and 1b
replicon assays using site-directed mutants and chimeric replicons carrying NS3
sequences derived from clinical isolates. Amino acid substitutions at NS3
positions F43, Q80, S122, R155, A156, and D168 reduced susceptibility to
simeprevir. Replicons with D168V or A, and R155K substitutions displayed large
reductions in susceptibility to simeprevir (FC in EC50 value greater than 50),
whereas other substitutions such as Q80K or R, S122R, and D168E displayed lower
reductions in susceptibility (FC in EC50 value between 2 and 50). Other
substitutions such as Q80G or L, S122G, N or T did not reduce susceptibility to
simeprevir in the replicon assay (FC in EC50 value lower than 2). Amino acid
substitutions at NS3 positions Q80, S122, R155, and/or D168 that were
associated with lower reductions in susceptibility to simeprevir when occurring
alone, reduced susceptibility to simeprevir by more than 50-fold when present
in combination.
Resistance In Clinical Studies
In a pooled analysis of subjects treated with 150 mg
OLYSIO in combination with Peg-IFN-alfa and RBV who did not achieve SVR in the
controlled Phase 2 and Phase 3 clinical trials (PILLAR, ASPIRE, QUEST 1 and
QUEST 2, PROMISE), emerging virus with amino acid substitutions at NS3
positions Q80, S122, R155 and/or D168 were observed in 180 out of 197 (91%)
subjects. Substitutions D168V and R155K alone or in combination with other
substitutions at these positions emerged most frequently (Table 11). Most of
these emerging substitutions have been shown to reduce susceptibility to
simeprevir in cell culture replicon assays.
HCV genotype 1 subtype-specific patterns of simeprevir
treatment-emergent amino acid substitutions were observed. HCV genotype 1a
predominately had emerging R155K alone or in combination with amino acid
substitutions at NS3 positions Q80, S122 and/or D168, while HCV genotype 1b had
most often an emerging D168V substitution (Table 11). In HCV genotype 1a with a
baseline Q80K amino acid polymorphism, an emerging R155K substitution was
observed most frequently at failure.
Table 11: Emergent Amino
Acid Substitutions in Controlled Phase 2 and Phase 3 Trials: Subjects who did
not Achieve SVR with 150 mg OLYSIO in Combination with Peg-IFN-alfa and RBV
Emerging Amino Acid Substitutions in NS3 |
Genotype 1a*
N=116 % (n) |
Genotype 1b
N=81 % (n) |
Any substitution at NS3 position F43, Q80, S122, R155, A156, or D168† |
95 (110) |
86 (70) |
D168E |
15 (17) |
17 (14) |
D168V |
10 (12) |
60 (49) |
Q80R‡ |
4 (5) |
12 (10) |
R155K |
77 (89) |
0 (0) |
Q80X+D168X# |
4 (5) |
14 (11) |
R155X+D168X# |
13 (15) |
4 (3) |
Q80K‡, S122A/G/I/T‡, S122R, R155Q‡, D168A, D168F‡, D168H, D168T, I170T§ |
Less than 10% |
Less than 10% |
* May include few subjects
infected with HCV genotype 1 viruses of non-1a/1b subtypes.
† Alone or in combination with other substitutions (includes mixtures).
‡ Substitutions only observed in combinations with other emerging
substitutions at one or more of the NS3 positions Q80, S122, R155 and/or D168.
# Subjects with virus carrying these combinations are also included in other
rows describing the individual substitutions. X represents multiple amino
acids. Other double or triple substitutions were observed with lower
frequencies.
§ Emerged alone (n=2) or in combination with R155K (n=3).
Note: substitutions at NS3 position F43 and A156 were selected in cell culture
and associated with reduced simeprevir activity in the replicon assay but were
not observed at time of failure. |
The majority of HCV genotype 1-infected subjects treated
with OLYSIO in combination with sofosbuvir (with or without RBV) for 12 or 24
weeks who did not achieve SVR due to virologic reasons and with sequencing data
available had emerging NS3 amino acid substitutions at position 168 and/or
R155K: 5 out of 6 subjects in COSMOS and 1 out of 3 subjects in OPTIMIST-1. The
emerging NS3 amino acid substitutions were similar to those observed in
subjects who did not achieve SVR following treatment with OLYSIO in combination
with Peg-IFN-alfa and RBV. No emerging NS5B amino acid substitutions associated
with sofosbuvir resistance were observed in subjects who did not achieve SVR
following treatment of OLYSIO in combination with sofosbuvir (with or without
RBV) for 12 or 24 weeks.
In the RESTORE trial in genotype
4-infected subjects, 30 out of 34 (88%) subjects who did not achieve SVR had
emerging amino acid substitutions at NS3 positions Q80, T122, R155, A156 and/or
D168 (mainly substitutions at position D168; 26 out of 34 [76%] subjects),
similar to the emerging amino acid substitutions observed in genotype
1-infected subjects.
Persistence Of Resistance–Associated
Substitutions
The persistence of
simeprevir-resistant virus was assessed following treatment failure in the
pooled analysis of subjects receiving 150 mg OLYSIO in combination with
Peg-IFN-alfa and RBV in the controlled Phase 2 and Phase 3 trials. The
proportion of subjects with detectable levels of treatment-emergent,
resistance-associated variants was followed post-treatment for a median
time of 28 weeks (range 0 to 70 weeks). Resistant variants remained at
detectable levels in 32 out of 66 subjects (48%) with single emerging R155K and
in 16 out of 48 subjects (33%) with single emerging D168V.
The lack of detection of virus containing a
resistance-associated substitution does not necessarily indicate that the
resistant virus is no longer present at clinically significant levels. The
long-term clinical impact of the emergence or persistence of virus containing
OLYSIO-resistance-associated substitutions is unknown.
Effect Of Baseline HCV Polymorphisms On Treatment
Response
Analyses were conducted to explore the association
between naturally-occurring baseline NS3/4A amino acid substitutions
(polymorphisms) and treatment outcome. In the pooled analysis of the Phase 3
trials QUEST 1 and QUEST 2, and in the PROMISE trial, the efficacy of OLYSIO in
combination with Peg-IFN-alfa and RBV was substantially reduced in subjects
infected with HCV genotype 1a virus with the NS3 Q80K polymorphism at baseline [see
Clinical Studies].
The observed prevalence of NS3 Q80K polymorphic variants
at baseline in the overall population of the Phase 2 and Phase 3 trials
(PILLAR, ASPIRE, PROMISE, QUEST 1 and QUEST 2) was 14%; while the observed
prevalence of the Q80K polymorphism was 30% in subjects infected with HCV
genotype 1a and 0.5% in subjects infected with HCV genotype 1b. The observed
prevalence of Q80K polymorphic variants at baseline in the U.S. population of
these Phase 2 and Phase 3 trials was 35% overall, 48% in subjects infected with
HCV genotype 1a and 0% in subjects infected with HCV genotype 1b. With the
exception of the NS3 Q80K polymorphism, baseline HCV variants with
polymorphisms at NS3 positions F43, Q80, S122, R155, A156, and/or D168 that
were associated with reduced simeprevir activity in replicon assays were
generally uncommon (1.3%) in subjects with HCV genotype 1 infection in these
Phase 2 and Phase 3 trials (n=2007).
The Q80K polymorphic variant was not observed in subjects
infected with HCV genotype 4.
Cross-Resistance
Based on resistance patterns observed in cell culture
replicon studies and HCV-infected subjects, cross-resistance between OLYSIO and
other NS3/4A protease inhibitors is expected. No cross-resistance is expected
between direct-acting antiviral agents with different mechanisms of action.
OLYSIO remained fully active against substitutions associated with resistance
to NS5A inhibitors, NS5B nucleoside and non-nucleoside polymerase inhibitors.
Pharmacogenomics
A genetic variant near the gene encoding
interferon-lambda-3 (IL28B rs12979860, a C [cytosine] to T [thymine]
substitution) is a strong predictor of response to Peg-IFN-alfa and RBV (PR).
In the Phase 3 trials, IL28B genotype was a stratification factor.
Overall, SVR rates were lower in subjects with the CT and
TT genotypes compared to those with the CC genotype (Tables 12 and 13). Among
both treatment-naïve subjects and those who experienced previous treatment
failures, subjects of all IL28B genotypes had the highest SVR rates with
OLYSIO-containing regimens (Table 12).
Table 12: SVR12 Rates by IL28B rs12979860 Genotype in
Adult Subjects with HCV Genotype 1 Infection Receiving OLYSIO 150 mg Once Daily
with Peg-IFN-alfa and RBV Compared to Subjects Receiving Placebo with
Peg-IFN-alfa and RBV (QUEST 1, QUEST 2, PROMISE)
Trial (Population) |
IL28B rs12979860 Genotype |
OLYSIO + PR
% (n/N) |
Placebo + PR
% (n/N) |
QUEST 1 and QUEST 2 (treatment-naive subjects) |
C/C |
95 (144/152) |
80 (63/79) |
C/T |
78 (228/292) |
41 (61/147) |
T/T |
61 (47/77) |
21 (8/38) |
PROMISE (prior relapsers) |
C/C |
89 (55/62) |
53 (18/34) |
C/T |
78 (131/167) |
34 (28/83) |
T/T |
65 (20/31) |
19 (3/16) |
SVR12: sustained virologic
response 12 weeks after planned end of treatment (EOT). |
Table 13: SVR12 Rates by IL28B
rs12979860 Genotype in Adult Patients Receiving OLYSIO 150 mg Once Daily in
Combination with Peg-IFN-alfa and RBV (C212 and RESTORE)
Trial (Population) |
IL28B rs12979860 Genotype |
Treatment-Naive Subjects % (n/N) |
Prior Relapsers % (n/N) |
Prior Partial Responders % (n/N) |
Prior Null Responders % (n/N) |
C212 (HIV-1 co-infection) |
C/C |
100 (15/15) |
100 (7/7) |
100 (1/1) |
80 (4/5) |
C/T |
70 (19/27) |
100 (6/6) |
71 (5/7) |
53 (10/19) |
T/T |
80 (8/10) |
0 (0/2) |
50 (1/2) |
50 (2/4) |
RESTORE (HCV genotype 4) |
C/C |
100 (7/7) |
100 (1/1) |
- |
- |
C/T |
82 (14/17) |
82 (14/17) |
60 (3/5) |
41 (9/22) |
T/T |
80 (8/10) |
100 (4/4) |
60 (3/5) |
39 (7/18) |
SVR12: sustained virologic
response 12 weeks after planned EOT. |
Animal Toxicology And/Or Pharmacology
Cardiovascular toxicity consisting of acute endocardial
and myocardial necrosis restricted to the left ventricular subendocardial area
was seen in 2 out of 6 animals in a 2-week oral dog toxicity study at an
exposure approximately 28 times the mean AUC in humans at the recommended daily
dose of 150 mg. No cardiac findings were observed in a 6-month and a 9-month
oral toxicity study at exposures, respectively, of 11 and 4 times the mean AUC
in humans at the recommended daily dose of 150 mg.
If OLYSIO is administered with Peg-IFN-alfa and RBV,
refer to the prescribing information for Peg-IFN-alfa and RBV for information
on animal toxicology.
Clinical Studies
Overview Of Clinical Trials
The efficacy of OLYSIO in combination with sofosbuvir in
subjects with HCV genotype 1 infection was evaluated in one Phase 2 trial
(COSMOS) in prior null responders and treatment-naïve subjects with compensated
cirrhosis (Child-Pugh A) or without cirrhosis, and in two Phase 3 trials in
subjects with compensated cirrhosis (Child-Pugh A) or without cirrhosis
(OPTIMIST-2 and OPTIMIST-1, respectively) who were HCV treatment-naïve or
treatment-experienced (following prior treatment with IFN [pegylated or
non-pegylated], with or without RBV) (see Table 14). Efficacy data from
OPTIMIST-2, which evaluated OLYSIO in combination with sofosbuvir in subjects
with compensated cirrhosis, are not shown because subjects in this trial
received a shorter than recommended duration of therapy.
Table 14: Trials Conducted
with OLYSIO in Combination with Sofosbuvir
Trial |
Population |
Relevant Study Arms (Number of Subjects Treated) |
COSMOS (open-label) |
GT 1, TN or TE*, with compensated cirrhosis or without cirrhosis |
- OLYSIO + sofosbuvir (12 weeks) (28)
- OLYSIO + sofosbuvir (24 weeks) (31)
|
OPTIMIST-1 (open-label) |
GT 1, TN or TE†, without cirrhosis |
- OLYSIO + sofosbuvir (12 weeks) (155)
|
OPTIMIST-2 (open-label) |
GT 1, TN or TE†, with compensated cirrhosis |
- OLYSIO + sofosbuvir (12 weeks) (103)
|
GT: genotype; TN:
treatment-naïve; TE: treatment-experienced.
* Includes only null responders to prior Peg-IFN/RBV therapy.
† Includes relapsers and non-responders to prior Peg-IFN-based therapy (with or
without RBV), and IFN-intolerant subjects. |
The efficacy of OLYSIO in
combination with Peg-IFN-alfa and RBV in patients with HCV genotype 1 infection
was evaluated in three Phase 3 trials in treatment-naïve subjects (QUEST 1,
QUEST 2 and TIGER), one Phase 3 trial in subjects who relapsed after prior
interferon-based therapy (PROMISE), one Phase 2 trial in subjects who failed
prior therapy with Peg-IFN and RBV (including prior relapsers, partial and null
responders) (ASPIRE), and one Phase 3 trial in subjects with HCV genotype 1 and
HIV-1 co-infection who were HCV treatment-naïve or failed previous HCV therapy
with Peg-IFN and RBV (C212), as summarized in Table 15.
The efficacy of OLYSIO in
combination with Peg-IFN-alfa and RBV in patients with HCV genotype 4 infection
was evaluated in one Phase 3 trial in treatment-naïve subjects or subjects who
failed previous therapy with Peg-IFN and RBV (RESTORE) (see Table 15).
Table 15: Trials Conducted
with OLYSIO in Combination with Peg-IFN-alfa and RBV
Trial |
Population |
Relevant Study Arms (Number of Subjects Treated) |
QUEST-1 (double-blind) |
GT 1, TN, with compensated cirrhosis or without cirrhosis |
- OLYSIO + Peg-IFN-alfa + RBV (264)
- Placebo (130)
|
QUEST-2 (double-blind) |
GT 1, TN, with compensated cirrhosis or without cirrhosis |
- OLYSIO + Peg-IFN-alfa + RBV (257)
- Placebo (134)
|
TIGER (double-blind) |
GT 1, TN, with compensated cirrhosis or without cirrhosis |
- OLYSIO + Peg-IFN-alfa + RBV (152)
- Placebo (152)
|
PROMISE (double-blind) |
* GT 1, TE , with compensated cirrhosis or without cirrhosis |
- OLYSIO + Peg-IFN-alfa + RBV (260)
- Placebo (133)
|
ASPIRE (double-blind) |
GT 1, TE, with compensated cirrhosis or without cirrhosis |
- OLYSIO + Peg-IFN-alfa + RBV (66)
- Placebo (66)
|
C212 (open-label) |
GT 1, TN or TE, with compensated cirrhosis or without cirrhosis, HCV/HIV-1 co-infected |
- OLYSIO + Peg-IFN-alfa + RBV (106)
|
RESTORE (open-label) |
GT 4, TN or TE, with compensated cirrhosis or without cirrhosis |
- OLYSIO + Peg-IFN-alfa + RBV (107)
|
GT: genotype; TN:
treatment-naïve; TE: treatment-experienced, includes prior relapsers, partial
responders and null responders following prior treatment with Peg-IFN and RBV.
* Includes only relapsers after prior IFN-based therapy. |
Prior relapsers were subjects
who had HCV RNA not detected at the end of prior IFN-based therapy and HCV RNA
detected during follow-up; prior partial responders were subjects with prior
on-treatment greater than or equal to 2 log10 reduction in HCV RNA from
baseline at Week 12 and HCV RNA detected at the end of prior therapy with
Peg-IFN and RBV; and null responders were subjects with prior on-treatment less
than 2 log10 reduction in HCV RNA from baseline at Week 12 during prior therapy
with Peg-IFN and RBV. These trials included subjects with compensated cirrhosis
(Child-Pugh A) or without cirrhosis, HCV RNA of at least 10000 IU/mL,
and liver histopathology consistent with chronic HCV infection. In subjects who
were treatment-naïve and prior relapsers, the overall duration of treatment
with Peg-IFN-alfa and RBV in the Phase 3 trials was response-guided. In these
subjects, the planned total duration of HCV treatment was 24 weeks if the
following on-treatment protocol-defined response-guided therapy (RGT) criteria
were met: HCV RNA lower than 25 IU/mL (detected or not detected) at Week 4 AND
HCV RNA not detected at Week 12. Plasma HCV RNA levels were measured using the
Roche COBAS® TaqMan® HCV test (version 2.0), for use with
the High Pure System (25 IU/mL lower limit of quantification and 15 IU/mL limit
of detection). Treatment stopping rules for HCV therapy were used to ensure
that subjects with inadequate on-treatment virologic response discontinued
treatment in a timely manner. In the Phase 3 trial C212 in HCV/HIV-1
co-infected subjects, the total duration of treatment with Peg-IFN-alfa and RBV
in treatment-naïve and prior relapser subjects with compensated cirrhosis was
not response-guided; these subjects received a fixed total duration of HCV
treatment of 48 weeks. The total duration of treatment with Peg-IFN-alfa and
RBV in non-cirrhotic HCV/HIV-1 co-infected treatment-naïve or prior relapser
subjects was response-guided using the same criteria.
OLYSIO In Combination With Sofosbuvir
Adult Subjects With HCV Genotype 1 Infection
The efficacy of OLYSIO (150 mg once daily) in combination
with sofosbuvir (400 mg once daily) in HCV genotype 1-infected treatment-naïve
or treatment-experienced subjects with compensated cirrhosis (Child-Pugh A) or
without cirrhosis was demonstrated in one Phase 2 trial (COSMOS) and one Phase
3 trial (OPTIMIST-1).
The COSMOS trial was an open-label, randomized Phase 2
trial to investigate the efficacy and safety of 12 or 24 weeks of OLYSIO (150
mg once daily) in combination with sofosbuvir (400 mg once daily) without or
with RBV in HCV genotype 1-infected prior null responders with METAVIR fibrosis
score F0-F2, or treatment-naïve subjects and prior null responders with METAVIR
fibrosis score F3-F4 and compensated liver disease. Results from treatment arms
containing RBV in addition to OLYSIO and sofosbuvir in the COSMOS trial are not
shown because efficacy was similar with or without RBV, and thus addition of
RBV to OLYSIO and sofosbuvir is not recommended. In this trial, 28 subjects
received 12 weeks of OLYSIO in combination with sofosbuvir and 31 subjects
received 24 weeks of OLYSIO in combination with sofosbuvir. These 59 subjects
had a median age of 57 years (range 27 to 68 years; with 2% above 65 years);
53% were male; 76% were White, and 24% Black or African American; 46% had a BMI
greater than or equal to 30 kg/m² ; the median baseline HCV RNA level
was 6.75 log10 IU/mL; 19%, 31% and 22% had METAVIR fibrosis scores F0-F1, F2
and F3, respectively, and 29% had METAVIR fibrosis score F4 (cirrhosis); 75%
had HCV genotype 1a of which 41% carried Q80K at baseline, and 25% had HCV
genotype 1b; 14% had IL28B CC genotype, 64% IL28B CT genotype, and 22% IL28B TT
genotype; 75% were prior null responders to Peg-IFN-alfa and RBV, and 25% were
treatment-naïve.
OPTIMIST-1 was an open-label, randomized Phase 3 trial in
HCV genotype 1-infected subjects without cirrhosis who were treatment-naïve or
treatment-experienced (including prior relapsers, non-responders and
IFN-intolerant subjects). Subjects were randomized to treatment arms of
different durations. One hundred fifty-five subjects received 12 weeks of
OLYSIO with sofosbuvir. The 155 subjects without cirrhosis receiving 12 weeks of
OLYSIO with sofosbuvir had a median age of 56 years (range 19 to 70 years; with
7% above 65 years); 53% were male; 78% were White, 20% Black or African
American, and 16% Hispanic; 37% had a BMI ≥ 30 kg/m² ; the
median baseline HCV RNA level was 6.83 log10 IU/mL; 75% had HCV genotype 1a of
which 40% had Q80K polymorphism at baseline, and 25% had HCV genotype 1b; 28%
had IL28B CC genotype, 55% IL28B CT genotype, and 17% IL28B TT genotype; 74%
were treatment-naïve and 26% were treatment-experienced.
In the COSMOS and OPTIMIST-1 trials, SVR12 was achieved
in 170/176 (97%) subjects without cirrhosis treated with 12 weeks OLYSIO in
combination with sofosbuvir, as shown in Table 16. In the COSMOS trial, 10/10
(100%) subjects with compensated cirrhosis (Child-Pugh A) who received 24 weeks
of OLYSIO with sofosbuvir achieved SVR12.
Table 16: Virologic Outcomes
in Adults without Cirrhosis Receiving 12 Weeks of OLYSIO with Sofosbuvir
(Pooled data from OPTIMIST-1 and COSMOS Trials)
Response Rates |
OLYSIO+ sofosbuvir*12 weeks
N=176% (n/N) |
Overall SVR12 |
97 (170/176) |
Outcome for subjects without SVR12 |
Viral relapse† |
3 (5/175) |
SVR12: sustained virologic
response 12 weeks after actual (OPTIMIST-1) or planned (COSMOS) EOT.
* 150 mg once daily OLYSIO for 12 weeks with 400 mg once daily sofosbuvir.
† Viral relapse rates are calculated with a denominator of subjects with
undetectable (or unconfirmed detectable) HCV RNA at EOT. In addition to five
subjects with viral relapse, one subject failed to achieve SVR12 due to missing
SVR12 data. No subjects experienced on-treatment virologic failure. |
Among subjects without
cirrhosis in OPTIMIST-1 who received 12 weeks of OLYSIO in combination with
sofosbuvir, similar SVR12 rates were observed among subgroups, including:
treatment-naïve and treatment-experienced subjects (112/115 [97%] and 38/40
[95%] respectively), subjects with HCV genotype 1a with and without NS3 Q80K
polymorphism (44/46 [96%] and 68/70 [97%], respectively), genotype 1b (38/39
[97%]), and subjects with IL28B CC and non-CC genotypes (43/43 [100%] and
107/112 [96%], respectively).
OLYSIO In Combination With Peg-IFN-alfa And RBV
Treatment-Naïve Adult Subjects With HCV Genotype 1
Infection
The efficacy of OLYSIO in treatment-naïve patients with
HCV genotype 1 infection was demonstrated in two randomized, double-blind,
placebo-controlled, 2-arm, multicenter, Phase 3 trials (QUEST 1 and QUEST 2).
The designs of both trials were similar. All subjects received 12 weeks of once
daily treatment with 150 mg OLYSIO or placebo, plus Peg-IFN-alfa-2a (QUEST 1
and QUEST 2) or Peg-IFN-alfa-2b (QUEST 2) and RBV, followed by 12 or 36 weeks
of therapy with Peg-IFN-alfa and RBV in accordance with the on-treatment
protocol-defined RGT criteria. Subjects in the control groups received 48 weeks
of Peg-IFN-alfa-2a or -2b and RBV.
In the pooled analysis for QUEST 1 and QUEST 2,
demographics and baseline characteristics were balanced between both trials and
between the OLYSIO and placebo treatment groups. In the pooled analysis of
trials (QUEST 1 and QUEST 2), the 785 enrolled subjects had a median age of 47
years (range: 18 to 73 years; with 2% above 65 years); 56% were male; 91% were
White, 7% Black or African American, 1% Asian, and 17% Hispanic; 23% had a body
mass index (BMI) greater than or equal to 30 kg/m² ; 78% had baseline
HCV RNA levels greater than 800000 IU/mL; 74% had METAVIR fibrosis score F0, F1
or F2, 16% METAVIR fibrosis score F3, and 10% METAVIR fibrosis score F4
(cirrhosis); 48% had HCV genotype 1a, and 51% HCV genotype 1b; 29% had IL28B CC
genotype, 56% IL28B CT genotype, and 15% IL28B TT genotype; 17% of the overall
population and 34% of the subjects with genotype 1a virus had the NS3 Q80K
polymorphism at baseline. In QUEST 1, all subjects received Peg-IFN-alfa-2a; in
QUEST 2, 69% of the subjects received Peg-IFN-alfa-2a and 31% received
Peg-IFN-alfa-2b.
Table 17 shows the response rates in treatment-naïve
adult subjects with HCV genotype 1 infection. In the OLYSIO treatment group,
SVR12 rates were lower in subjects with genotype 1a virus with the NS3 Q80K
polymorphism at baseline compared to subjects infected with genotype 1a virus
without the Q80K polymorphism.
Table 17: Virologic Outcomes
in Treatment-Naïve Adult Subjects with HCV Genotype 1 Infection (Pooled Data
QUEST 1 and QUEST 2 Trials)
Response Rate |
OLYSIO + PR
N=521 % (n/N) |
Placebo + PR
N=264 % (n/N) |
Overall SVR12 (genotype 1a and 1b) |
80 (419/521) |
50 (132/264) |
Genotype 1a |
75 (191/254) |
47 (62/131) |
Without Q80K |
84 (138/165) |
43 (36/83) |
With Q80K |
58 (49/84) |
52 (23/44) |
Genotype 1b |
85 (228/267) |
53 (70/133) |
Outcome for subjects without SVR12 |
On-treatment failure* |
8 (42/521) |
33 (87/264) |
Viral relapse† |
11 (51/470) |
23 (39/172) |
OLYSIO: 150 mg OLYSIO for 12
weeks with Peg-IFN-alfa-2a or -2b and RBV for 24 or 48 weeks; Placebo: placebo
for 12 weeks with Peg-IFN-alfa-2a or -2b and RBV for 48 weeks. SVR12: sustained
virologic response 12 weeks after planned EOT.
* On-treatment failure was defined as the proportion of subjects with confirmed
HCV RNA detected at EOT (including but not limited to subjects who met the
protocol-specified treatment stopping rules and/or experienced viral
breakthrough).
† Viral relapse rates are calculated with a denominator of subjects with HCV
RNA not detected at actual EOT. Includes 4 OLYSIO-treated subjects who
experienced relapse after SVR12. |
In the pooled analysis of QUEST
1 and QUEST 2, 88% (459/521) of OLYSIO-treated subjects were eligible for a
total treatment duration of 24 weeks. In these subjects, the SVR12 rate was 88%
(405/459).
Seventy-nine percent (79%;
404/509) of OLYSIO-treated subjects had HCV RNA not detected at Week 4 (RVR);
in these subjects the SVR12 rate was 90% (362/404).
SVR12 rates were higher for the
OLYSIO treatment group compared to the placebo treatment group by sex, age,
race, BMI, HCV genotype/subtype, baseline HCV RNA load (less than or equal to
800000 IU/mL, greater than 800000 IU/mL), METAVIR fibrosis score, and IL28B genotype.
Table 18 shows the SVR rates by METAVIR fibrosis score.
Table 18: SVR12 Rates by
METAVIR Fibrosis Score in Treatment-Naïve Adult Subjects with HCV Genotype 1
Infection (Pooled Data QUEST 1 and QUEST 2 Trials)
Subgroup |
OLYSIO + PR
% (n/N) |
Placebo + PR
% (n/N) |
F0-2 |
84 (317/378) |
55 (106/192) |
F3-4 |
68 (89/130) |
36 (26/72) |
OLYSIO: 150 mg OLYSIO for 12
weeks with Peg-IFN-alfa-2a or -2b and RBV for 24 or 48 weeks; Placebo: placebo
for 12 weeks with Peg-IFN-alfa-2a or -2b and RBV for 48 weeks. SVR12: sustained
virologic response 12 weeks after planned EOT. |
SVR12 rates were higher for
subjects receiving OLYSIO with Peg-IFN-alfa-2a or Peg-IFN-alfa-2b and RBV (88%
and 78%, respectively) compared to subjects receiving placebo with
Peg-IFN-alfa-2a or Peg-IFN-alfa-2b and RBV (62% and 42%, respectively) (QUEST
2).
Treatment-Naïve East Asian
Subjects With HCV Genotype 1 Infection
TIGER was a Phase 3,
randomized, double-blind, placebo-controlled trial in HCV genotype 1-infected
treatment-naïve adult subjects from China and South Korea.
In this trial, 152 subjects
received 12 weeks of once-daily treatment with 150 mg OLYSIO plus Peg-IFN-alfa-2a
and RBV, followed by 12 or 36 weeks of therapy with Peg-IFN-alfa-2a and RBV in
accordance with protocol-defined RGT criteria; and 152 subjects received 12
weeks of placebo plus Peg-IFN-alfa-2a and RBV, followed by 36 weeks therapy
with Peg-IFN-alfa-2a and RBV. These 304 subjects had a median age of 45 years
(range: 18 to 68 years; with 2% above 65 years); 49% were male; all were East
Asians (81% were enrolled in China, and 19% in South Korea); 3% had a body mass
index (BMI) greater or equal to 30 kg/m² ; 84% had baseline HCV RNA
levels greater than 800000 IU/mL; 82% had METAVIR fibrosis score F0, F1 or F2,
12% METAVIR fibrosis score F3, and 6% METAVIR fibrosis score F4
(cirrhosis); 1% had HCV genotype 1a, and 99% HCV genotype 1b; less than 1% of
the overall population had Q80K polymorphism at baseline; 79% had IL28B CC
genotype, 20% IL28B CT genotype, and 1% IL28B TT genotype. Demographics and
baseline characteristics were balanced across the OLYSIO 150 mg and placebo treatment
groups.
SVR12 rates were 91% (138/152) in the OLYSIO 150 mg
treatment group and 76% (115/152) in the placebo treatment group [see ADVERSE
REACTIONS, Use In Specific Populations and CLINICAL PHARMACOLOGY].
Adult Subjects With HCV Genotype 1 Infection Who Failed
Prior Peg-IFN-alfa And RBV Therapy
The PROMISE trial was a randomized, double-blind,
placebo-controlled, 2-arm, multicenter, Phase 3 trial in subjects with HCV
genotype 1 infection who relapsed after prior IFN-based therapy. All subjects
received 12 weeks of once daily treatment with 150 mg OLYSIO or placebo, plus
Peg-IFN-alfa-2a and RBV, followed by 12 or 36 weeks of therapy with
Peg-IFN-alfa-2a and RBV in accordance with the protocol-defined RGT criteria.
Subjects in the control group received 48 weeks of Peg-IFN-alfa-2a and RBV.
Demographics and baseline characteristics were balanced
between the OLYSIO and placebo treatment groups. The 393 subjects enrolled in
the PROMISE trial had a median age of 52 years (range: 20 to 71 years; with 3%
above 65 years); 66% were male; 94% were White, 3% Black or African American,
2% Asian, and 7% Hispanic; 26% had a BMI greater than or equal to 30 kg/m² ;
84% had baseline HCV RNA levels greater than 800000 IU/mL; 69% had METAVIR fibrosis
score F0, F1 or F2, 15% METAVIR fibrosis score F3, and 15% METAVIR fibrosis
score F4 (cirrhosis); 42% had HCV genotype 1a, and 58% HCV genotype 1b; 24% had
IL28B CC genotype, 64% IL28B CT genotype, and 12% IL28B TT genotype; 13% of the
overall population and 31% of the subjects with genotype 1a virus had the NS3
Q80K polymorphism at baseline. The prior IFN-based HCV therapy was
Peg-IFN-alfa-2a/RBV (68%) or Peg-IFN-alfa-2b/RBV (27%).
Table 19 shows the response rates for the OLYSIO and
placebo treatment groups in adult subjects with HCV genotype 1 infection who
relapsed after prior interferon-based therapy. In the OLYSIO treatment group,
SVR12 rates were lower in subjects infected with genotype 1a virus with the NS3
Q80K polymorphism at baseline compared to subjects infected with genotype 1a
virus without the Q80K polymorphism.
Table 19: Virologic Outcomes
in Adult Subjects with HCV Genotype 1 Infection who Relapsed after Prior
IFN-Based Therapy (PROMISE Trial)
Response Rates |
OLYSIO + PR
N=260 % (n/N) |
Placebo + PR
N=133 % (n/N) |
Overall SVR12 (genotype 1a and 1b) |
79 (206/260) |
37 (49/133) |
Genotype 1a |
70 (78/111) |
28 (15/54) |
Without Q80K |
78 (62/79) |
26 (9/34) |
With Q80K |
47 (14/30) |
30 (6/20) |
Genotype 1b |
86 (128/149) |
43 (34/79) |
Outcome for subjects without SVR12 |
On-treatment failure* |
3 (8/260) |
27 (36/133) |
Viral relapse† |
18 (46/249) |
48 (45/93) |
OLYSIO: 150 mg OLYSIO for 12
weeks with Peg-IFN-alfa-2a and RBV for 24 or 48 weeks; Placebo: placebo for 12
weeks with Peg-IFN-alfa-2a and RBV for 48 weeks. SVR12: sustained virologic
response 12 weeks after planned EOT.
* On-treatment failure was defined as the proportion of subjects with confirmed
HCV RNA detected at EOT (including but not limited to subjects who met the
protocol-specified treatment stopping rules and/or experienced viral
breakthrough).
† Viral relapse rates are calculated with a denominator of subjects with HCV
RNA not detected at actual EOT and with at least one follow-up HCV RNA
assessment. Includes 5 OLYSIO-treated subjects who experienced relapse after
SVR12. |
In PROMISE, 93% (241/260) of
OLYSIO-treated subjects were eligible for a total treatment duration of 24
weeks. In these subjects, the SVR12 rate was 83% (200/241).
Seventy-seven percent (77%;
200/259) of OLYSIO-treated subjects had HCV RNA not detected at Week 4 (RVR);
in these subjects the SVR12 rate was 87% (173/200).
SVR12 rates were higher for the
OLYSIO treatment group compared to the placebo treatment group by sex, age,
race, BMI, HCV genotype/subtype, baseline HCV RNA load (less than or equal to
800000 IU/mL, greater than 800000 IU/mL), prior HCV therapy, METAVIR fibrosis
score, and IL28B genotype. Table 20 shows the SVR rates by METAVIR fibrosis
score.
Table 20: SVR12 Rates by
METAVIR Fibrosis Score in Adult Subjects with HCV Genotype 1 Infection who
Relapsed after Prior IFN-Based Therapy (PROMISE Trial)
Subgroup |
OLYSIO + PR % (n/N) |
Placebo + PR % (n/N) |
F0-2 |
82 (137/167) |
41 (40/98) |
F3-4 |
73 (61/83) |
24 (8/34) |
OLYSIO: 150 mg OLYSIO for 12
weeks with Peg-IFN-alfa-2a and RBV for 24 or 48 weeks; Placebo: placebo for 12
weeks with Peg-IFN-alfa-2a and RBV for 48 weeks.
SVR12: sustained virologic
response 12 weeks after planned EOT. |
The ASPIRE trial was a randomized,
double-blind, placebo-controlled, Phase 2 trial in subjects with HCV genotype 1
infection, who failed prior therapy with Peg-IFN-alfa and RBV (including prior
relapsers, partial responders or null responders).
In this trial, 66 subjects
received 12 weeks of 150 mg OLYSIO in combination with Peg-IFN-alfa-2a and RBV
for 48 weeks, and 66 subjects received placebo in combination with
Peg-IFN-alfa-2a and RBV for 48 weeks. These 132 subjects had a median age of 49
years (range: 20 to 66 years; with 1% above 65 years); 66% were male; 93% were White,
3% Black or African American, and 2% Asian; 27% had a BMI greater than or equal
to 30 kg/m² ; 85% had baseline HCV RNA levels greater than 800000
IU/mL; 64% had METAVIR fibrosis score F0, F1, or F2, 18% METAVIR fibrosis score
F3, and 18% METAVIR fibrosis score F4 (cirrhosis); 43% had HCV genotype 1a, and
57% HCV genotype 1b; 17% had IL28B CC genotype, 67% IL28B CT genotype, and 16% IL28B
TT genotype (information available for 93 subjects); 27% of the overall
population and 23% of the subjects with genotype 1a virus had the NS3 Q80K
polymorphism at baseline. Forty percent (40%) of subjects were prior relapsers,
35% prior partial responders, and 25% prior null responders following prior
therapy with Peg-IFN-alfa and RBV. Demographics and baseline characteristics
were balanced between the 12 weeks 150 mg OLYSIO and placebo treatment groups.
Table 21 shows the response rates for the 12 weeks of 150
mg OLYSIO and placebo treatment groups in prior relapsers, prior partial
responders and prior null responders.
Table 21: Virologic Outcomes
in Prior Partial and Null Responders with HCV Genotype 1 Infection who Failed
Prior Peg-IFN-alfa and RBV Therapy (ASPIRE Trial)
Response Rates |
OLYSIO + PR
N=66 % (n/N) |
Placebo + PR
N=66 % (n/N) |
SVR24 |
Prior relapsers |
77 (20/26) |
37 (10/27) |
Prior partial responders |
65 (15/23) |
9 (2/23) |
Prior null responders |
53 (9/17) |
19 (3/16) |
Outcome for subjects without SVR24 |
On-treatment virologic failure* |
|
|
Prior relapsers |
8 (2/26) |
22 (6/27) |
Prior partial responders |
22 (5/23) |
78 (18/23) |
Prior null responders |
35 (6/17) |
75 (12/16) |
Viral relapse† |
Prior relapsers |
13 (3/23) |
47 (9/19) |
Prior partial responders |
6 (1/17) |
50 (2/4) |
Prior null responders |
18 (2/11) |
25 (1/4) |
150 mg OLYSIO: 150 mg OLYSIO
for 12 weeks with Peg-IFN-alfa-2a and RBV for 48 weeks; Placebo: placebo with
Peg-IFN-alfa-2a and RBV for 48 weeks. SVR24: sustained virologic response
defined as undetectable HCV RNA 24 weeks after planned EOT.
* On-treatment virologic failure was defined as the proportion of subjects who
met the protocol-specified treatment stopping rules (including stopping rule
due to viral breakthrough) or who had HCV RNA detected at EOT (for subjects who
completed therapy).
† Viral relapse rates are calculated with a denominator of subjects with HCV
RNA not detected at EOT and with at least one follow-up HCV RNA assessment. |
SVR24 rates were higher in the
OLYSIO-treated subjects compared to subjects receiving placebo in combination
with Peg-IFN-alfa and RBV, regardless of HCV geno/subtype, METAVIR fibrosis
score, and IL28B genotype.
Subjects With HCV/HIV-1
Co-Infection
C212 was an open-label,
single-arm Phase 3 trial in HIV-1 subjects co-infected with HCV genotype 1 who
were treatment-naïve or failed prior HCV therapy with Peg-IFN-alfa and
RBV (including prior relapsers, partial responders or null responders).
Non-cirrhotic treatment-naïve subjects or prior relapsers received 12 weeks of
once-daily treatment with 150 mg OLYSIO plus Peg-IFN-alfa-2a and RBV, followed
by 12 or 36 weeks of therapy with Peg-IFN-alfa-2a and RBV in accordance with the
protocol-defined RGT criteria. Prior non-responder subjects (partial and null
response) and all cirrhotic subjects (METAVIR fibrosis score F4) received 36
weeks of Peg-IFN-alfa-2a and RBV after the initial 12 weeks of OLYSIO in
combination with Peg-IFN-alfa-2a and RBV.
The 106 enrolled subjects in the C212 trial had a median
age of 48 years (range: 27 to 67 years; with 2% above 65 years); 85% were male;
82% were White, 14% Black or African American, 1% Asian, and 6% Hispanic; 12%
had a BMI greater than or equal to 30 kg/m² ; 86% had baseline HCV
RNA levels greater than 800,000 IU/mL; 68% had METAVIR fibrosis score F0, F1 or
F2, 19% METAVIR fibrosis score F3, and 13% METAVIR fibrosis score F4; 82% had
HCV genotype 1a, and 17% HCV genotype 1b; 28% of the overall population and 34%
of the subjects with genotype 1a had Q80K polymorphism at baseline; 27% had IL28B
CC genotype, 56% IL28B CT genotype, and 17% IL28B TT genotype; 50% (n=53) were
HCV treatment-naïve subjects, 14% (n=15) prior relapsers, 9% (n=10) prior
partial responders, and 26% (n=28) prior null responders. Eighty-eight percent
(n=93) of the subjects were on highly active antiretroviral therapy (HAART),
with nucleoside reverse transcriptase inhibitors and the integrase inhibitor
raltegravir being the most commonly used HIV antiretroviral. HIV protease
inhibitors and non-nucleoside reverse transcriptase inhibitors (except
rilpivirine) were prohibited from use in this study.
The median baseline HIV-1 RNA levels and CD4+ cell count
in subjects not on HAART were 4.18 log10 copies/mL (range: 1.3-4.9 log10 copies/mL)
and 677 Ã 106 cells/L (range: 489-1076 Ã 106 cells/L),
respectively. The median baseline CD4+ cell count in subjects on HAART was 561
à 106 cells/mL (range: 275-1407 à 106 cells/mL).
Table 22 shows the response rates in treatment-naïve,
prior relapsers, prior partial responders and null responders.
Table 22: Virologic Outcomes
in Adult Subjects with HCV Genotype 1 Infection and HIV-1 Co-Infection (C212
Trial)
Response Rates |
Treatment-N aive Subjects
N=53 % (n/N) |
Prior Relapsers
N=15 % (n/N) |
Prior Partial Responders
N=10 % (n/N) |
Prior Null Responders
N=28 % (n/N) |
Overall SVR12 (genotype 1a and 1b) |
79 (42/53) |
87 (13/15) |
70 (7/10) |
57 (16/28) |
Genotype 1a |
77 (33/43) |
83 (10/12) |
67 (6/9) |
54 (13/24) |
Genotype 1b |
90 (9/10) |
100 (3/3) |
100 (1/1) |
75 (3/4) |
Outcome for subjects without SVR12 |
On-treatment failure* |
9 (5/53) |
0 (0/15) |
20 (2/10) |
39 (11/28) |
Viral relapse† |
10 (5/48) |
13 (2/15) |
0 (0/7) |
12 (2/17) |
150 mg OLYSIO for 12 weeks with
Peg-IFN-alfa-2a and RBV for 24 or 48 weeks.
SVR12: sustained virologic response 12 weeks after planned EOT.
* On-treatment failure was defined as the proportion of subjects with confirmed
detectable HCV RNA at EOT (including but not limited to subjects who met the
protocol-specified treatment stopping rules and/or experienced viral
breakthrough).
† Viral relapse rates are calculated with a denominator of subjects with
undetectable HCV RNA at actual EOT and with at least one follow-up HCV RNA
assessment. Includes one prior null responder who experienced relapse after
SVR12. |
Eighty-nine percent (n=54/61)
of the OLYSIO-treated treatment-naïve subjects and prior relapsers without
cirrhosis were eligible for a total treatment duration of 24 weeks. In these
subjects, the SVR12 rate was 87%.
Seventy-one percent (n=37/52),
93% (n=14/15), 80% (n=8/10) and 36% (n=10/28) of OLYSIO-treated treatment-naïve
subjects, prior relapsers, prior partial responders and prior null responders
had undetectable HCV RNA at week 4 (RVR). In these subjects the SVR12 rates
were 89%, 93%, 75% and 90%, respectively.
Table 23 shows the SVR rates by
METAVIR fibrosis scores.
Table 23: SVR12 Rates by
METAVIR Fibrosis Score in Adult Subjects with HCV Genotype 1 Infection and
HIV-1 co-Infection (C212 Trial)
Subgroup |
Treatment-Naive Subjects % (n/N) |
Prior Relapsers % (n/N) |
Prior Partial Responders % (n/N) |
Prior Null Responders % (n/N) |
F0-2 |
89 (24/27) |
78 (7/9) |
50 (1/2) |
57 (4/7) |
F3-4 |
57 (4/7) |
100 (2/2) |
67 (2/3) |
60 (6/10) |
150 mg OLYSIO for 12 weeks with
Peg-IFN-alfa-2a and RBV for 24 or 48 weeks.
SVR12: sustained virologic response
12 weeks after planned EOT. |
Two subjects had HIV virologic
failure defined as confirmed HIV-1 RNA at least 200 copies/mL after previous
less than 50 copies/mL; these failures occurred 36 and 48 weeks after end of
OLYSIO treatment.
Adult Subjects With HCV
Genotype 4 Infection
RESTORE was an open-label,
single-arm Phase 3 trial in subjects with HCV genotype 4 infection who were
treatment-naïve or failed prior therapy with Peg-IFN-alfa and RBV (including
prior relapsers, partial responders or null responders). Treatment-naïve
subjects or prior relapsers received once-daily treatment with 150 mg OLYSIO
plus Peg-IFN-alfa-2a and RBV for 12 weeks, followed by 12 or 36 weeks of
therapy with Peg-IFN-alfa-2a and RBV in accordance with the protocol-defined
RGT criteria. Prior non-responder subjects (partial and null response) received
once-daily treatment with 150 mg OLYSIO plus Peg-IFN-alfa-2a and RBV for 12
weeks, followed by 36 weeks of Peg-IFN-alfa-2a and RBV.
The 107 enrolled subjects in
the RESTORE trial with HCV genotype 4 had a median age of 49 years (range: 27
to 69 years; with 5% above 65 years); 79% were male; 72% were White, 28% Black
or African American, and 7% Hispanic; 14% had a BMI greater than or equal to 30
kg/m² ; 60% had baseline HCV RNA levels greater than 800,000 IU/mL; 57%
had METAVIR fibrosis score F0, F1 or F2, 14% METAVIR fibrosis score F3, and 29%
METAVIR fibrosis score F4; 42% had HCV genotype 4a, and 24% had HCV genotype
4d; 8% had IL28B CC genotype, 58% IL28B CT genotype, and 35% IL28B TT genotype;
33% (n=35) were treatment-naïve HCV subjects, 21% (n=22) prior relapsers, 9%
(n=10) prior partial responders, and 37% (n=40) prior null responders.
Table 24 shows the response rates in treatment-naïve,
prior relapsers, prior partial responders and null responders. Table 25 shows
the SVR rates by METAVIR fibrosis scores.
Table 24: Virologic Outcomes
in Adult Subjects with HCV Genotype 4 Infection (RESTORE Trial)
Response Rates |
Treatment-N aive Subjects
N=35 % (n/N) |
Prior Relapsers
N=22 % (n/N) |
Prior Partial Responders
N=10 % (n/N) |
Prior Null Responders
N=40 % (n/N) |
Overall SVR12 |
83 (29/35) |
86 (19/22) |
60 (6/10) |
40 (16/40) |
Outcome for subjects without SVR12 |
On-treatment failure* |
9 (3/35) |
9 (2/22) |
20 (2/10) |
45 (18/40) |
Viral relapse† |
9 (3/35) |
5 (1/22) |
20 (2/10) |
15 (6/40) |
150 mg OLYSIO for 12 weeks with
Peg-IFN-alfa-2a and RBV for 24 or 48 weeks.
SVR12: sustained virologic response 12 weeks after planned EOT.
* On-treatment failure was defined as the proportion of subjects with confirmed
detectable HCV RNA at EOT (including but not limited to subjects who met the
protocol-specified treatment stopping rules and/or experienced viral
breakthrough).
† Viral relapse rates are calculated with a denominator of subjects with
undetectable (or unconfirmed detectable) HCV RNA at actual EOT. |
Table 25: SVR12 Rates by
METAVIR Fibrosis Score in Adult Subjects with HCV Genotype 4 Infection (RESTORE
Trial)
Subgroup |
Treatment-Naive Subjects
% (n/N) |
Prior Relapsers
% (n/N) |
Prior Partial Responders
% (n/N) |
Prior Null Responders
% (n/N) |
F0-2 |
85 (22/26) |
91 (10/11) |
100 (5/5) |
47 (8/17) |
F3-4 |
78 (7/9) |
82 (9/11) |
20 (1/5) |
35 (7/20) |
150 mg OLYSIO for 12 weeks with
Peg-IFN-alfa-2a and RBV for 24 or 48 weeks.
SVR12: sustained virologic response
12 weeks after planned EOT. |