CLINICAL PHARMACOLOGY
Mechanism Of Action
Prevnar 13, comprised of pneumococcal polysaccharides
conjugated to a carrier protein (CRM197), elicits a T-cell dependent
immune response. Protein carrier-specific T-cells provide the signals needed for
maturation of the B-cell response.
Nonclinical and clinical data support opsonophagocytic
activity, as measured by opsonophagocytic activity (OPA) antibody assay, as a
contributor to protection against pneumococcal disease. The OPA antibody assay
provides an in vitro measurement of the ability of serum antibodies to
eliminate pneumococci by promoting complement-mediated phagocytosis and is
believed to reflect relevant in vivo mechanisms of protection against
pneumococcal disease. OPA antibody titers are expressed as the reciprocal of
the highest serum dilution that reduces survival of the pneumococci by at least
50%.
In infants that have received Prevnar 13,
opsonophagocytic activity correlates well with serotype specific anti-capsular
polysaccharide IgG levels as measured by ELISA. A serum anti-capsular polysaccharide
antibody concentration of 0.35 μg/mL as measured by ELISA one month after
the third dose as a single antibody reference concentration was used to
estimate the effectiveness of Prevnar 13 against invasive pneumococcal disease
(IPD) in infants and children. The assay used for this determination is a
standardized ELISA involving pre-absorption of the test sera with pneumococcal
Cpolysaccharide and serotype 22F polysaccharide to reduce non-specific
background reactivity. The single antibody reference value was based on pooled
efficacy estimates from three placebo-controlled IPD efficacy trials with
either Prevnar or the investigational 9-valent CRM conjugate pneumococcal polysaccharide
vaccine. This reference concentration is only applicable on a population basis
and cannot be used to predict protection against IPD on an individual basis.
Functional antibodies elicited by the vaccine (as measured by a dribble
opsonophagocytic activity [dOPA] antibody assay) were also evaluated in
infants.
In adults, an antipolysaccharide binding antibody IgG
level to predict protection against invasive pneumococcal disease or
non-bacteremic pneumonia has not been defined. Noninferiority trials for Prevnar
13 were designed to show that functional OPA antibody responses (as measured by
a microcolony OPA [mcOPA] antibody assay) for the Prevnar 13 serotypes are
noninferior and for some serotypes superior to the common serotypes in the
currently licensed pneumococcal polysaccharide vaccine (PPSV23). OPA antibody
titers measured in the mcOPA antibody assay cannot be compared directly to
titers measured in the dOPA antibody assay.
Clinical Studies
Efficacy Data
Prevnar Efficacy Data
Invasive Pneumococcal Disease (IPD)
Prevnar (Pneumococcal 7-valent Conjugate Vaccine
[Diphtheria CRM197 Protein]) was licensed in the US for infants and
children in 2000, following a randomized, double-blind clinical trial in a
multiethnic population at Northern California Kaiser Permanente (NCKP) from
October 1995 through August 20, 1998, in which 37,816 infants were randomized
to receive either Prevnar or a control vaccine (an investigational
meningococcal group C conjugate vaccine [MnCC]) at 2, 4, 6, and 12-15 months of
age. In this study, the efficacy of Prevnar against invasive disease due to S.
pneumoniae in cases accrued during this period was 100% in both the
per-protocol and intent-to-treat analyses (95% confidence interval [CI]: 75.4%,
100% and 81.7%, 100%, respectively). Data accumulated through an extended follow-up
period to April 20, 1999, resulted in similar efficacy estimates of 97.4% in
the per-protocol analysis and 93.9% in the intent-to-treat analysis (95% CI:
82.7%, 99.9% and 79.6%, 98.5%, respectively).
Acute Otitis Media (AOM)
The efficacy of Prevnar against otitis media was assessed
in two clinical trials: a trial in Finnish infants at the National Public
Health Institute and the efficacy trial in US infants at Northern California
Kaiser Permanente (NCKP).
The Finnish Otitis Media (FinOM) trial was a randomized,
double-blind trial in which 1,662 infants were equally randomized to receive
either Prevnar or a control vaccine Recombivax HB (Hepatitis B vaccine (Recombinant)
[Hep B]) at 2, 4, 6, and 12-15 months of age. In this study, conducted between
December 1995 and March 1999, parents of study participants were asked to bring
their children to the study clinics if the child had respiratory infections or
symptoms suggesting acute otitis media (AOM). If AOM was diagnosed,
tympanocentesis was performed, and the middle-ear fluid was cultured. If S. pneumoniae
was isolated, serotyping was performed; the primary endpoint was efficacy
against AOM episodes caused by vaccine serotypes in the per-protocol
population. In the NCKP trial, the efficacy of Prevnar against otitis media was
assessed from the beginning of the trial in October 1995 through April 1998.
The otitis media analysis included 34,146 infants randomized to receive either
Prevnar (N=17,070), or the control vaccine (N=17,076), at 2, 4, 6, and 12-15
months of age. In this trial, no routine tympanocentesis was performed, and no
standard definition of otitis media was used by study physicians. The primary
otitis media endpoint was efficacy against all otitis media episodes in the
perprotocol population.
The vaccine efficacy against AOM episodes due to vaccine
serotypes assessed in the Finnish trial, was 57% (95% CI: 44%, 67%) in the
per-protocol population and 54% (95% CI: 41%, 64%) in the intent-totreat population.
The vaccine efficacy against AOM episodes due to vaccine-related serotypes (6A,
9N, 18B, 19A, 23A), also assessed in the Finnish trial, was 51% (95% CI: 27,
67) in the per-protocol population and 44% (95% CI: 20, 62) in the
intent-to-treat population. There was a nonsignificant increase in AOM episodes
caused by serotypes unrelated to the vaccine in the per-protocol population, compared
to children who received the control vaccine, suggesting that children who
received Prevnar appeared to be at increased risk of otitis media due to
pneumococcal serotypes not represented in the vaccine. However, vaccination
with Prevnar reduced pneumococcal otitis media episodes overall. In the NCKP
trial, in which the endpoint was all otitis media episodes regardless of
etiology, vaccine efficacy was 7% (95% CI: 4%, 10%) and 6% (95% CI: 4%, 9%),
respectively, in the per-protocol and intent-to-treat analyses. Several other
otitis media endpoints were also assessed in the two trials.
Recurrent AOM, defined as 3 episodes in 6 months or 4
episodes in 12 months, was reduced by 9% in both the per-protocol and
intent-to-treat populations (95% CI: 3%, 15% in per-protocol and 95% CI: 4%,
14% in intent-to-treat) in the NCKP trial; a similar trend was observed in the
Finnish trial. The NCKP trial also demonstrated a 20% reduction (95% CI: 2, 35)
in the placement of tympanostomy tubes in the per-protocol population and a 21%
reduction (95% CI: 4, 34) in the intent-to-treat population. Data from the NCKP
trial accumulated through an extended follow-up period to April 20, 1999, in
which a total of 37,866 children were included (18,925 in Prevnar group and
18,941 in MnCC control group), resulted in similar otitis media efficacy estimates
for all endpoints.
Prevnar 13 Adult Efficacy Data
The efficacy of Prevnar 13 against vaccine-type (VT)
pneumococcal community-acquired pneumonia (CAP) and IPD was assessed in a
randomized, double-blind, placebo-controlled study conducted over ~ 4 years in
the Netherlands (Study 12). A total of 84,496 subjects 65 years and older
received a single dose of either Prevnar 13 or placebo in a 1:1 randomization;
42,240 subjects were vaccinated with Prevnar 13 and 42,256 subjects were
vaccinated with placebo.
The primary objective was to demonstrate the efficacy of
Prevnar 13 in the prevention of a first episode of confirmed VT-CAP (defined as
presence of ≥2 specified clinical criteria; chest X-ray consistent with
CAP as determined by a central committee of radiologists; and positive
VT-specific Urinary Antigen Detection assay (UAD) or isolation of VT S.
pneumoniae from blood or other sterile site). The secondary objectives were to
demonstrate the efficacy of Prevnar 13 in the prevention of a first episode of
1) confirmed nonbacteremic/noninvasive (NB/NI) VT-CAP (an episode of VT-CAP for
which the blood culture result and any other sterile site culture results were
negative for S. pneumoniae) and 2) VT-IPD (the presence of S. pneumoniae
in a sterile site).
Surveillance for suspected pneumonia and IPD began
immediately after vaccination and continued through identification of a
prespecified number of cases. Subjects who had a CAP or IPD episode with symptom
onset less than 14 days after vaccination were excluded from all analyses.
The median duration of follow-up per subject was 3.93
years. Prevnar 13 demonstrated statistically significant vaccine efficacy (VE)
in preventing first episodes of VT pneumococcal CAP, nonbacteremic/noninvasive
(NB/NI) VT pneumococcal CAP, and VT-IPD (Table 15).
Table 15 : Vaccine Efficacy for the Primary and
Secondary Efficacy Endpoints - Per- Protocol Population
Efficacy Endpoint |
Total Number of Episodes |
Vaccine Group |
VE (%) |
(95.2% CI) |
Prevnar 13
N=42240 |
Placebo
N=42256 |
n |
n |
Primary endpoint: First case of confirmed VT pneumococcal CAP |
139 |
49 |
90 |
45.6 |
(21.8, 62.5) |
Secondary endpoint: First episode of confirmed NB/NI VT pneumococcal CAP |
93 |
33 |
60 |
45 |
(14.2, 65.3) |
Secondary endpoint: First episode of VT-IPD |
35 |
7 |
28 |
75 |
(41.1, 90.9) |
Abbreviations: CAP = community-acquired pneumonia; CI =
confidence interval; NB/NI = nonbacteremic/noninvasive; IPD = invasive
pneumococcal disease; VE = vaccine efficacy; VT = vaccine-type. |
Prevnar 13 Clinical Trials In Children 6 Weeks Through 17
Years Of Age
Infants And Children 6 Weeks Through 17 Months Of Age
Prevnar 13 effectiveness against invasive pneumococcal
disease was inferred from comparative studies to a US-licensed 7-valent
pneumococcal conjugate vaccine, Prevnar, in which Prevnar 13 elicited antipolysaccharide
binding and functional OPA antibodies, as measured by ELISA and dOPA assays, respectively.
These studies were designed to evaluate immunologic noninferiority of Prevnar
13 to Prevnar.
Clinical trials have been conducted in the US using a 2,
4, 6, and 12-15 month schedule.
The US noninferiority study2 (Study 2) was a
randomized, double-blind, active-controlled trial in which 2 month-old infants
were randomly assigned to receive either Prevnar 13 or Prevnar in a 1:1 ratio.
The two vaccine groups were well balanced with respect to race, ethnicity, and
age and weight at enrollment. Most subjects were White (69.1%), 19.6% were
Black or African-American, and 2.4% were Asian; 82.1% of subjects were
non-Hispanic and non-Latino and 17.3% were Hispanic or Latino. Overall, 54.0%
of subjects were male infants.
In Study 2, immune responses were compared in subjects
receiving either Prevnar 13 or Prevnar using a set of noninferiority criteria.
Co-primary endpoints included the percentage of subjects with serum pneumococcal
anti-capsular polysaccharide IgG ≥0.35 μg/mL measured one month
after the third dose and serum pneumococcal anti-capsular polysaccharide IgG
geometric mean concentrations (GMCs) one month after the fourth dose. The assay
used for this determination was a standardized ELISA involving pre-absorption
of the test sera with pneumococcal C-polysaccharide and serotype 22F
polysaccharide to reduce non-specific background reactivity. Responses to the 7
common serotypes in Prevnar 13 and Prevnar recipients were compared directly.
Responses to the 6 additional serotypes in Prevnar 13 recipients were each
compared to the lowest response observed among the Prevnar serotypes in Prevnar
recipients.
Pneumococcal Immune Responses Following Three Doses
In Study 2, the noninferiority criterion for the
proportion of subjects with pneumococcal anti-capsular polysaccharide IgG
antibody concentrations ≥0.35 μg/mL one month after the third dose
was met for 10 of the 13 serotypes. The exceptions were serotypes 6B, 9V, and
3. Although the response to serotypes 6B and 9V did not meet the pre-specified
noninferiority criterion, the differences were marginal.
The percentage of infants achieving pneumococcal
anti-capsular polysaccharide IgG antibody concentrations ≥0.35 μg/mL
one month after the third dose is shown below (Table 16).
Table 16: Percentage of Subjects With Anti-capsular
Antibody Concentration ≥0.35 μg/mL One Month After a Three Dose
Series Administered at 2, 4 and 6 Months of Age, Study 2*,† ,‡ ,§
Serotype |
Prevnar 13
N=249-252
(95% CI) |
Prevnar
N=250-252
(95% CI) |
Difference in % responders
(95% CI) |
Prevnar Serotypes |
4 |
94.4 (90.9, 96.9) |
98.0 (95.4, 99.4) |
-3.6 (-7.3, -0.1) |
6B |
87.3 (82.5, 91.1) |
92.8 (88.9, 95.7) |
-5.5 (-10.9, -0.1) |
9V |
90.5 (86.2, 93.8) |
98.4 (96.0, 99.6) |
-7.9 (-12.4, -4.0) |
14 |
97.6 (94.9, 99.1) |
97.2 (94.4, 98.9) |
0.4 (-2.7, 3.5) |
18C |
96.8 (93.8, 98.6) |
98.4 (96.0, 99.6) |
-1.6 (-4.7, 1.2) |
19F |
98.0 (95.4, 99.4) |
97.6 (99.4, 99.1) |
0.4 (-2.4, 3.4) |
23F |
90.5 (86.2, 93.8) |
94.0 (90.4, 96.6) |
-3.6 (-8.5, 1.2) |
Additional Serotypes¶ |
1 |
95.6 (92.3, 97.8) |
¶ |
2.8 (-1.3, 7.2) |
3 |
63.5 (57.1, 69.4) |
¶ |
-29.3 (-36.2, -22.4) |
5 |
89.7 (85.2, 93.1) |
¶ |
-3.1 (-8.3, 1.9) |
6A |
96.0 (92.8, 98.1) |
¶ |
3.2 (-0.8, 7.6) |
7F |
98.4 (96.0, 99.6) |
¶ |
5.6 (1.9, 9.7) |
19A |
98.4 (96.0, 99.6) |
¶ |
5.6 (1.9, 9.7) |
*Studies conducted in US NCT00373958 (Study 2).
†Evaluable Immunogenicity Population.
‡Noninferiority was met when the lower limit of the 95% CI for the difference
between groups (Prevnar 13 minus Prevnar) was greater than -10%.
§Antibody measured by a standardized ELISA involving pre-absorption of the test
sera with pneumococcal C-polysaccharide and serotype 22F polysaccharide to
reduce non-specific background reactivity.
¶Comparison for the 6 additional serotypes was to the lowest responder of the 7
common serotypes in Prevnar recipients, which for this analysis was serotype 6B
(92.8%; 95% CI: 88.9, 95.7). |
Functional dOPA antibody responses were elicited for all
13 serotypes, as shown in Table 17.
Table 17: Pneumococcal dOPA Antibody Geometric Mean
Titers One Month After a Three Dose Series Administered at 2, 4 and 6 Months of
Age, Study 2*,† ,‡
Serotype |
Prevnar 13
N=91-94 (95% CI) |
Prevnar
N=89-94 (95% CI) |
Prevnar Serotypes |
4 |
359 (276, 468) |
536 (421, 681) |
6B |
1055 (817, 1361) |
1514 (1207, 1899) |
9V |
4035 (2933, 5553) |
3259 (2288, 4641) |
14 |
1240 (935, 1646) |
1481 (1133, 1934) |
18C |
276 (210, 361) |
376 (292, 484) |
19F |
54 (40, 74) |
45 (34, 60) |
23F |
791 (605, 1034) |
924 (709, 1204) |
Additional Serotypes |
1 |
52 (39, 69) |
4 (4, 5) |
3 |
121 (92, 158) |
7 (5, 9) |
5 |
91 (67, 123) |
4 (4, 4) |
6A |
980 (783, 1226) |
100 (66, 152) |
7F |
9494 (7339, 12281) |
128 (80, 206) |
19A |
152 (105, 220) |
7 (5, 9) |
*Studies conducted in US NCT00373958 (Study 2).
†The dOPA (opsonophagocytic activity) antibody assay measures the ability of
immune sera, in conjunction with complement, to mediate the uptake and killing
of S. pneumoniae by phagocytic cells.
‡Evaluable Immunogenicity Population. |
Pneumococcal Immune Responses Following Four Doses
In Study 2, post-dose 4 antibody concentrations were
higher for all 13 serotypes than those achieved after the third dose. The
noninferiority criterion for pneumococcal anti-capsular polysaccharide GMCs after
4 doses was met for 12 of the 13 pneumococcal serotypes. The noninferiority
criterion was not met for the response to serotype 3 (Table 18).
Table 18: Pneumococcal IgG GMCs (μg/mL) One Month
After a Four Dose Series Administered at 2, 4, 6 and 12-15 Months , Study 2*,†
,‡ ,§
Serotype |
Prevnar 13
N=232-236 (95% CI) |
Prevnar
N=222-223 (95% CI) |
GMC Ratio (95% CI) |
Prevnar Serotypes |
4 |
3.73 (3.28, 4.24) |
5.49 (4.91, 6.13) |
0.68 (0.57, 0.80) |
6B |
11.53 (9.99, 13.30) |
15.63 (13.80, 17.69) |
0.74 (0.61, 0.89) |
9V |
2.62 (2.34, 2.94) |
3.63 (3.25, 4.05) |
0.72 (0.62, 0.85) |
14 |
9.11 (7.95, 10.45) |
12.72 (11.22, 14.41) |
0.72 (0.60, 0.86) |
18C |
3.20 (2.82, 3.64) |
4.70 (4.18, 5.28) |
0.68 (0.57, 0.81) |
19F |
6.60 (5.85, 7.44) |
5.60 (4.87, 6.43) |
1.18 (0.98, 1.41) |
23F |
5.07 (4.41, 5.83) |
7.84 (6.91, 8.90) |
0.65 (0.54, 0.78) |
Additional Serotypes¶ |
1 |
5.06 (4.43, 5.80) |
¶ |
1.40 (1.17, 1.66) |
3 |
0.94 (0.83, 1.05) |
¶ |
0.26 (0.22, 0.30) |
5 |
3.72 (3.31, 4.18) |
¶ |
1.03 (0.87, 1.20) |
6A |
8.20 (7.30, 9.20) |
¶ |
2.26 (1.93, 2.65) |
7F |
5.67 (5.01, 6.42) |
¶ |
1.56 (1.32, 1.85) |
19A |
8.55 (7.64, 9.56) |
¶ |
2.36 (2.01, 2.76) |
*Studies conducted in US NCT00373958 (Study 2).
†Evaluable Immunogenicity Population.
‡Noninferiority was declared if the lower limit of the 2-sided 95% CI for
Geometric Mean Ratio (Prevnar 13:Prevnar) was greater than 0.5.
§Antibody measured by a standardized ELISA involving pre-absorption of the test
sera with pneumococcal C-polysaccharide and serotype 22F polysaccharide to
reduce non-specific background reactivity.
¶Comparison for the 6 additional serotypes was to the lowest responder of the 7
common serotypes in Prevnar recipients, which for this analysis was serotype 9V
(3.63; 95% CI 3.25, 4 .05). |
Following the fourth dose, the functional dOPA antibody
response for each serotype was quantitatively greater than the response
following the third dose (see Table 19).
Table 19: Pneumococcal dOPA Antibody Geometric Mean
Titers One Month After the Fourth Dose-Evaluable Toddler Immunogenicity
Population, Study 2*,†
Serotype |
Prevnar 13
N=88-92
(95% CI) |
Prevnar
N=92-96
(95% CI) |
Prevnar Serotypes |
4 |
1180 (847, 1643) |
1492 (1114, 1999) |
6B |
3100 (2337, 4111) |
4066 (3243, 5098) |
9V |
11856 (8810, 15955) |
18032 (14125, 23021) |
14 |
2002 (1453, 2760) |
2366 (1871, 2992) |
18C |
993 (754, 1308) |
1722 (1327, 2236) |
19F |
200 (144, 276) |
167 (121, 230) |
23F |
2723 (1961, 3782) |
4982 (3886, 6387) |
Additional Serotypes |
1 |
164 (114, 237) |
5 (4, 6) |
3 |
380 (300, 482) |
12 (9, 16) |
5 |
300 (229, 393) |
5 (4, 6) |
6A |
2242 (1707, 2945) |
539 (375, 774) |
7F |
11629 (9054, 14938) |
268 (164, 436) |
19A |
1024 (774, 1355) |
29 (19, 44) |
*Studies conducted in US NCT00373958 (Study 2).
†The dOPA (opsonophagocytic activity) antibody assay measures the ability of
immune sera, in conjunction with complement, to mediate the uptake and killing
of S. pneumoniae by phagocytic cells. |
Previously Unvaccinated Older Infants And Children 7
Months Through 5 Years Of Age
In an open-label descriptive study of Prevnar4
13 in Poland (Study 4), children 7 months through 11 months of age, 12 months
through 23 months of age and 24 months through 5 years of age (prior to the 6 th
birthday) who were naïve to pneumococcal conjugate vaccine, were given 3, 2 or
1 dose of Prevnar 13 respectively, according to the age-appropriate schedules
in Table 2. Serum IgG concentrations were measured one month after the final
dose in each age group and the data are shown in Table 20.
Table 20: Pneumococcal Anti-capsular Polysaccharide
IgG Antibody Geometric Mean Concentrations (μg/mL) One Month After the
Final Prevnar 13 Catch-Up Dose in Pneumococcal Vaccine Naïve Children 7 Months
Through 5 Years of Age by Age Group, Study 4 *,†
Serotype |
3 doses Prevnar 13 7 through 11 months
N=83-84
(95% CI) |
2 doses Prevnar 13 12 through 23 months
N=104-110
(95% CI) |
1 dose Prevnar 13 24 months through 5 years
N=135-152
(95% CI) |
1 |
2.88 (2.44, 3.39) |
2.74 (2.37, 3.16) |
1.78 (1.52, 2.08) |
3 |
1.94 (1.68, 2.24) |
1.86 (1.60, 2.15) |
1.42 (1.23, 1.64) |
4 |
3.63 (3.11, 4.23) |
4.28 (3.78, 4.86) |
3.37 (2.95, 3.85) |
5 |
2.85 (2.34, 3.46) |
2.16 (1.89, 2.47) |
2.33 (2.05, 2.64) |
6A |
3.72 (3.12, 4.45) |
2.62 (2.25, 3.06) |
2.96 (2.52, 3.47) |
6B |
4.77 (3.90, 5.84) |
3.38 (2.81, 4.06) |
3.41 (2.80, 4.16) |
7F |
5.30 (4.54, 6.18) |
5.99 (5.40, 6.65) |
4.92 (4.26, 5.68) |
9V |
2.56 (2.21, 2.96) |
3.08 (2.69, 3.53) |
2.67 (2.32, 3.07) |
14 |
8.04 (6.95, 9.30) |
6.45 (5.48, 7.59) |
2.24 (1.71, 2.93) |
18C |
2.77 (2.39, 3.23) |
3.71 (3.29, 4.19) |
2.56 (2.17, 3.03) |
19A |
4.77 (4.28, 5.33) |
4.94 (4.31, 5.65) |
6.03 (5.22, 6.97) |
19F |
2.88 (2.35, 3.54) |
3.07 (2.68, 3.51) |
2.53 (2.14, 2.99) |
23F |
2.16 (1.82, 2.55) |
1.98 (1.64, 2.39) |
1.55 (1.31, 1.85) |
Note - ClinicalTrials.gov NCT number is as follows:
NCT00452452 (Poland).
*Studies conducted in Poland NCT004 524 52 (Study 4 ).
†Open label administration of Prevnar 13. |
Children 15 Months Through 59 Months Of Age Previously
Vaccinated With Prevnar
In an open-label descriptive study in the US5
(Study 5), children 15 months through 59 months previously vaccinated with 3 or
4 doses of Prevnar, received 2 doses of Prevnar 13 (children >15 through 23
months of age) or 1 dose of Prevnar 13 (children 24 months through 59 months of
age). The data following one dose of Prevnar 13 in children 24 months through
59 months of age are shown in Table 21.
Table 21: Pneumococcal Anti-capsular Polysaccharide
IgG Antibody Geometric Mean Concentrations (μg/mL) One Month After One
Prevnar 13 Catch-Up Dose in Children 24 Through 59 Months of Age With 3 or 4
Prior Doses of Prevnar, US Catch-Up Study 5 *,†
Serotype |
1 dose Prevnar 13 24 months through 59 months
N=173-175
(95% CI) |
1 |
2.43 (2.15, 2.75) |
3 |
1.38 (1.17, 1.61) |
5 |
2.13 (1.89, 2.41) |
6A |
12.96 (11.04, 15.21) |
7F |
4.22 (3.74, 4.77) |
19A |
14.18 (12.37, 16.25) |
*Studies conducted in US NCT00761631 (Study 5).
†Open label administration of Prevnar 13. |
Children 5 Through 17 Years Of Age
In a US study5 (Study 5), a single dose of
Prevnar 13 was administered to children 5 through 9 years of age, who were
previously vaccinated with at least one dose of Prevnar, and to pneumococcal
vaccine naïve children 10 through 17 years of age.
In children 5 through 9 years of age, serotype-specific
IgG concentrations measured 1 month after vaccination were noninferior (i.e.,
the lower limit of the 2-sided 95% CI for the geometric mean ratio [GMR] of
>0.5) to the corresponding IgG concentrations in toddlers (Study 3) 1 month
after a fourth pneumococcal vaccination (after the 4 dose of Prevnar for the 7
common serotypes and after the 4 th dose of Prevnar 13 for the 6
additional serotypes) as shown in Tables 22 and 23 respectively.
Table 22: Pneumococcal IgG GMCs (μg/mL) One Month
After Vaccination for 7 Common Serotypes, Prevnar 13 in Children 5 through 9
Years of Age in Study 5 Relative to Prevnar in Study 3 (Post-toddler)*,† ,‡
Serotype |
Vaccine Group (as Enrolled/Randomized) |
GMC RatioÞ |
(95% CIβ) |
Prevnar 13 5 Through 9 Years (Study 5) |
Prevnar Post-Toddler Dose (Study 3) |
n§ |
GMC¶ |
(95% CI#) |
n§ |
GMC¶ |
(95% CI#) |
Common |
4 |
169 |
8.45 |
(7.24, 9.87) |
173 |
2.79 |
(2.45, 3.18) |
3.03 |
(2.48, 3.71) |
6B |
171 |
53.56 |
(45.48, 63.07) |
173 |
9.47 |
(8.26, 10.86) |
5.66 |
(4.57, 6.99) |
9V |
171 |
9.51 |
(8.38, 10.78) |
172 |
1.97 |
(1.77, 2.19) |
4.83 |
(4.10, 5.70) |
14 |
169 |
29.36 |
(24.78, 34.78) |
173 |
8.19 |
(7.31, 9.18) |
3.58 |
(2.93, 4.39) |
18C |
171 |
8.23 |
(7.13, 9.51) |
173 |
2.33 |
(2.05, 2.65) |
3.53 |
(2.91, 4.29) |
19F |
171 |
17.58 |
(14.95, 20.67) |
173 |
3.31 |
(2.87, 3.81) |
5.31 |
(4.29, 6.58) |
23F |
169 |
11.26 |
(9.79, 12.95) |
173 |
4.49 |
(3.86, 5.23) |
2.51 |
(2.04, 3.08) |
*Studies conducted in US NCT00761631 (Study 5) and NCT00444457 (Study 3).
†Evaluable Immunogenicity Population.
‡Noninferiority was declared if the lower limit of the 2-sided 95% CI for
geometric mean ratio was greater than 0.5.
§n = Number
of subjects with a determinate antibody concentration for the specified
serotype.
¶Geometric mean concentrations (GMCs) were calculated using all subjects with
available data for the specified blood draw. GMC after a 4 -dose vaccination
series with Prevnar (Study 3, post-toddler).
#Confidence intervals (CIs) are back transformations of a confidence interval
based on the Student t distribution for the mean logarithm of the
concentrations.
ÞRatio of GMCs: Prevnar 13 (Study 5) to Prevnar (Study 3) reference.
βCIs for the ratio are back
transformations of a confidence interval based on the Student t distribution for
the mean difference of the logarithms of the measures [Prevnar 13 (Study 5) -
Prevnar (Study 3)]. |
Table 23: Pneumococcal IgG GMCs (μg/mL) One Month
After Vaccination for Additional 6 Serotypes, Prevnar 13 in Children 5 through
9 Years of Age in Study 5 Relative to Prevnar 13 in Study 3 (Post-toddler)*,†.‡
Serotype |
Vaccine Group (as Enrolled/Randomized) |
GMC RatioÞ |
(95% CIβ) |
Prevnar 13 5 Through 9 Years (Study 5) |
Prevn Post-Tod( (Stud |
ar 13 dler Dose ly 3) |
n§ |
GMC¶ |
(95% CI#) |
n§ |
GMC¶ |
(95% CI#) |
Additional |
1 |
171 |
3.57 |
(3.05, 4.18) |
1068 |
2.90 |
(2.75, 3.05) |
1.23 |
(1.07, 1.42) |
3 |
171 |
2.38 |
(2.07, 2.74) |
1065 |
0.75 |
(0.72, 0.79) |
3.17 |
(2.78, 3.62) |
5 |
171 |
5.52 |
(4.82, 6.32) |
1068 |
2.85 |
(2.72, 2.98) |
1.94 |
(1.71, 2.20) |
6A |
169 |
21.51 |
(18.15, 25.51) |
1063 |
7.11 |
(6.78, 7.46) |
3.03 |
(2.64, 3.47) |
7F |
170 |
6.24 |
(5.49, 7.08) |
1067 |
4.39 |
(4.18, 4.61) |
1.42 |
(1.24, 1.62) |
19A |
170 |
17.18 |
(15.01, 19.67) |
1056 |
8.44 |
(8.05, 8.86) |
2.03 |
(1.78, 2.32) |
*Studies conducted in US NCT00761631 (Study 5) and NCT00444457
(Study 3).
†Evaluable Immunogenicity Population.
‡Noninferiority was declared if the lower limit of the 2-sided 95% CI for
geometric mean ratio was greater than 0.5.
§n = Number of subjects with a determinate antibody concentration for the
specified serotype.
¶Geometric mean concentrations (GMCs) were calculated using all subjects with
available data for the specified blood draw. GMC after a 4 -dose vaccination
series with Prevnar 13 (Study 3, post-toddler).
#Confidence intervals (CIs) are back transformations of a confidence interval
based on the Student t distribution for the mean logarithm of the
concentrations.
ÞRatio of GMCs: Prevnar 13 (Study 5) to Prevnar 13 (Study 3).
βCIs for the ratio are back
transformations of a confidence interval based on the Student t distribution for
the mean difference of the logarithms of the measures [Prevnar 13 (Study 5) -
Prevnar 13 (Study 3)]. |
In children 10 through 17 years of age OPA GMTs, as
measured by the mcOPA assay, 1 month after vaccination were noninferior (i.e.,
the lower limit of the 2-sided 95% CI for the GMR of >0.5) to mcOPA GMTs in
the 5 through 9 year old group for 12 of 13 serotypes (except for serotype 3),
as shown in Table 24.
Table 24: Comparison of Pneumococcal mcOPA GMTs One
Month After Vaccination, Prevnar 13, in Children 10 through 17 Years of Age
Relative to Prevnar 13 in Children 5 through 9 Years of Age *,† ,‡ ,§
Serotype |
Vaccine Group (as Enrolled) |
GMT Ratioβ |
(95% CIa) |
Prevnar 13 (10 through 17 Years ) |
Prevnar 13 (5 through 9 Years ) |
n¶ |
GMT# |
(95% CIÞ) |
n¶ |
GMT# |
(95% CIÞ) |
Common |
4 |
188 |
6912 |
(6101, 7831) |
181 |
4629 |
(4017, 5334) |
1.5 |
(1.24, 1.80) |
6B |
183 |
14224 |
(12316, 16427) |
178 |
14996 |
(13164, 17083) |
0.9 |
(0.78, 1.15) |
9V |
186 |
4485 |
(4001, 5028) |
180 |
4733 |
(4203, 5328) |
0.9 |
(0.80, 1.12) |
14 |
187 |
6894 |
(6028, 7884) |
176 |
4759 |
(4120, 5497) |
1.4 |
(1.19, 1.76) |
18C |
182 |
6263 |
(5436, 7215) |
175 |
8815 |
(7738, 10041) |
0.7 |
(0.59, 0.86) |
19F |
184 |
2280 |
(1949, 2668) |
178 |
1591 |
(1336, 1893) |
1.4 |
(1.14, 1.81) |
23F |
187 |
3808 |
(3355, 4323) |
176 |
3245 |
(2819,3736) |
1.2 |
(0.97, 1.42) |
Additional |
1 |
189 |
322 |
(275, 378) |
179 |
191 |
(165, 221) |
1.7 |
(1.36, 2.10) |
3 |
181 |
114 |
(101, 130) |
178 |
203 |
(182, 226) |
0.6 |
(0.48, 0.67) |
5 |
183 |
360 |
(298, 436) |
178 |
498 |
(437, 568) |
0.7 |
(0.57, 0.91) |
6A |
182 |
9928 |
(8457, 11655) |
178 |
7514 |
(6351, 8891) |
1.3 |
(1.05, 1.67) |
7F |
185 |
6584 |
(5829,7436) |
178 |
10334 |
(9099, 11737) |
0.6 |
(0.53, 0.76) |
19A |
187 |
1276 |
(1132, 1439) |
180 |
1180 |
(1048, 1329) |
1.1 |
(0.91, 1.28) |
*Studies conducted in US NCT00761631 (Study 5).
†Evaluable Immunogenicity Population.
‡Noninferiority was declared if the lower limit of the 2-sided 95% CI for
geometric mean ratio was greater than 0.5.
§Individual mcOPA antibody assay values below the assay LLOQ (lower limit of
quantitation) were set at 0.50*LLOQ for the purpose of calculating the mcOPA
antibody GMT.
¶n= Number of subjects with a determinate antibody titer for the specified
serotype.
#Geometric mean titers (GMTs) were calculated using all subjects with available
data for the specified blood draw.
ÞConfidence intervals (CIs) are back transformations of a confidence interval
based on the Student t distribution for the mean logarithm of the titers.
βRatio of GMTs: Prevnar 13(10 through
17 years of age) to Prevnar 13 (5 through 9 years of age).
a CIs for the ratio are back transformations of a confidence interval based on
the Student t distribution for the mean difference of the logarithms of the
measures [Prevnar 13(10 through 17 years of age) - Prevnar 13(5 through 9 years
of age)] Study 5. |
Prevnar 13 Immunogenicity Clinical Trials In Adults
Six Phase 3 or Phase 4 clinical trials6-8,10,11,13
were conducted in the US and Europe evaluating the immunogenicity of Prevnar 13
in different adult age groups, in individuals who were either not previously
vaccinated with PPSV23 (PPSV23 unvaccinated) or who had received one dose of
PPSV23 (PPSV23 previously vaccinated).
Each study included healthy adults and immunocompetent
adults with stable underlying conditions including chronic cardiovascular
disease, chronic pulmonary disease, renal disorders, diabetes mellitus, chronic
liver disease, and medical risk conditions and behaviors (e.g., alcoholism and smoking)
that are known to increase the risk of serious pneumococcal pneumonia and
invasive pneumococcal disease. A stable medical condition was defined as a
medical condition not requiring significant change in therapy (i.e., change to
new therapy category due to worsening disease) or hospitalization for worsening
disease 6-12 weeks prior to receipt of the study vaccine.
Immune responses elicited by Prevnar 13 and PPSV23 were
measured by a mcOPA antibody assay for the 13 pneumococcal serotypes contained
in Prevnar 13. Serotype-specific mcOPA antibody GMTs measured 1 month after
each vaccination were calculated. For the 12 serotypes in common to both vaccines,
noninferiority between vaccines was met if the lower limit of the 2-sided 95%
confidence interval (CI) of the GMT ratio (Prevnar 13/PPSV23) was greater than
0.5.
The response to the additional serotype 6A, which is
contained in Prevnar 13 but not in PPSV23, was assessed by demonstration of a
≥4-fold increase in the anti-6A mcOPA antibody titer above preimmunization
levels. A statistically significantly greater response for Prevnar 13 was
defined, for the difference in percentages (Prevnar 13 minus PPSV23) of adults
achieving a ≥4-fold increase in anti- 6A mcOPA antibody titer, as the
lower limit of the 2-sided 95% CI greater than zero. For comparison of mcOPA
antibody GMTs, a statistically greater response for serotype 6A was defined as
the lower limit of the 2-sided 95% CI of the GMT ratio (Prevnar 13/PPSV23)
greater than 2.
Of the 6 Phase 3 or Phase 4 clinical trials, 2
noninferiority trials6,7 were conducted in which the immune
responses to Prevnar 13 were compared with the immune responses to PPSV23; one
in PPSV23 unvaccinated adults aged 18 through 64 years6 (Study 6),
and one in PPSV23 previously vaccinated adults aged ≥70 years7
(Study 7). A third study compared immune responses to a single dose of Prevnar 13
to the response to Prevnar 13 administered one year after a dose of PPSV23 in
adults aged 60 through 64 years who were PPSV23 unvaccinated at enrollment8
(Study 8). The study also compared immune responses of PPSV23 as a single dose
to the responses to PPSV23 administered one year after a dose of Prevnar 13.
Two studies assessed the concomitant administration of Prevnar 13 with seasonal
inactivated Fluarix (IIV3) in the US10 (Study 10) and Europe11
(Study 11). One study (Study 13) assessed the concomitant administration of
Prevnar 13 with seasonal inactivated Fluzone Quadrivalent (IIV4) in PPSV23
previously vaccinated adults ≥50 years of age in the US.
Overall across the clinical studies evaluating the
immunogenicity of Prevnar 13 in adults, persons 18 through 64 years of age
responded at least as well as persons 65 years and older, the age group evaluated
in a clinical endpoint efficacy trial.
Clinical Trials Conducted In PPSV23 Unvaccinated Adults
In an active-controlled modified1 double-blind
clinical trial6 (Study 6) of Prevnar 13 in the US, PPSV23 unvaccinated
adults aged 60 through 64 years were randomly assigned (1:1) to receive Prevnar
13 or PPSV23. In addition, adults aged 18 through 49 years and 50 through 59
years were enrolled and received one dose of Prevnar 13 (open-label).
In adults aged 60 through 64 years, the mcOPA antibody
GMTs elicited by Prevnar 13 were noninferior to those elicited by PPSV23 for
the 12 serotypes in common to both vaccines (see Table 24). In addition, the
lower limit of the 95% confidence interval for the mcOPA antibody GMT ratio
(Prevnar 13/PPSV23) was greater than 1 for 8 of the serotypes in common.
For serotype 6A, which is unique to Prevnar 13, the
proportion of subjects with a ≥4-fold increase after Prevnar 13 (88.5%)
was statistically significantly greater than after PPSV23 (49.3%) in PPSV23- unvaccinated
adults aged 60 through 64 years. OPA antibody GMTs for serotype 6A were
statistically significantly greater after Prevnar 13 compared with after PPSV23
(see Table 25).
The mcOPA antibody GMTs elicited by Prevnar 13 in adults
aged 50 through 59 years were noninferior to the corresponding mcOPA antibody
GMTs elicited by Prevnar 13 in adults aged 60 through 64 years for all 13
serotypes (see Table 25).
In adults aged 18 through 49 years, the mcOPA antibody
GMTs elicited by Prevnar 13 were noninferior to those elicited by Prevnar 13 in
adults aged 60 through 64 years for all 13 serotypes (see Table 25).
Table 25: mcOPA Antibody GMTs in PPSV23-Unvaccinated
Adults Aged 18 Through 49 Years or Aged 50 Through 59 Years Given Prevnar 13
and in Adults Aged 60 Through 64 Years Given Prevnar 13 or PPSV23 (Study 6) *,†
,‡ ,§,¶
Serotype |
Prevnar 13 |
Prevnar 13 |
Prevnar 13 |
PPSV23 |
Prevnar 13 18-49 Relative to 60-64 Years |
Prevnar 13 50-59 Relative to 60-64 Years |
Prevnar 13 Relative to PPSV23, 60-64 Years# |
18-49 YearsÞ
N=836- 866 GMT |
50-59 YearsÞ
N=350- 384 GMT |
60-64 Years
N=359- 404 GMT |
60-64 Years
N=367- 402 GMT |
GMT Ratio (95% CI) |
GMT Ratio (95% CI) |
GMT Ratio (95% CI) |
1 |
353 |
211 |
158 |
119 |
2.4 (2.03, 2.87) |
1.3 (1.07, 1.65) |
1.3 (1.07, 1.65) |
3 |
91 |
94 |
96 |
90 |
1.0 (0.84, 1.13) |
1.0 (0.82, 1.18) |
1.1 (0.89, 1.29) |
4 |
4747 |
2904 |
2164 |
1405 |
2.3 (1.92, 2.76) |
1.3 (1.06, 1.70) |
1.5 (1.18, 2.00) |
5 |
386 |
322 |
236 |
198 |
1.9 (1.55, 2.42) |
1.4 (1.08, 1.74) |
1.2 (0.95, 1.50) |
6Aβ |
5746 |
4469 |
2766 |
343 |
2.2 (1.84, 2.67) |
1.6 (1.28, 2.03) |
8.1 (6.11, 10.67) |
6B |
9813 |
3350 |
2212 |
998 |
4.9 (4.13, 5.93) |
1.5 (1.20, 1.91) |
2.2 (1.70, 2.89) |
7F |
3249 |
1807 |
1535 |
829 |
2.9 (2.41, 3.49) |
1.2 (0.98, 1.41) |
1.9 (1.52, 2.26) |
9V |
3339 |
2190 |
1701 |
1012 |
2.9 (2.34, 3.52) |
1.3 (1.08, 1.53) |
1.7 (1.40, 2.02) |
14 |
2983 |
1078 |
733 |
819 |
4.9 (4.01, 5.93) |
1.5 (1.14, 1.89) |
0.9 (0.69, 1.16) |
18C |
3989 |
2077 |
1834 |
1074 |
2.3 (1.91, 2.79) |
1.1 (0.89, 1.44) |
1.7 (1.32, 2.21) |
19A |
1580 |
968 |
691 |
368 |
2.3 (2.02, 2.66) |
1.4 (1.17, 1.68) |
1.9 (1.53, 2.30) |
19F |
1533 |
697 |
622 |
636 |
3.0 (2.44, 3.60) |
1.1 (0.89, 1.41) |
1.0 (0.78, 1.23) |
23F |
1570 |
531 |
404 |
87 |
4.2 (3.31, 5.31) |
1.3 (0.96, 1.80) |
4.6 (3.37, 6.38) |
GMT, Geometric Mean Titer.
*Study conducted in US NCT004 27895 (Study 6).
†Noninferiority was defined for the 13 serotypes in adults aged 18 to 4 9
years, for the 12 common serotypes in adults aged 60 to 64 years and for the 13
serotypes in adults aged 50 to 59 years as the lower limit of the 2-sided 95%
CI for GMT ratio greater than 0.5.
‡mcOPA antibody for the 11 serotypes unique to PPSV23 but not contained in
Prevnar 13 were not measured.
§Individual mcOPA antibody assay values below the assay LLOQ (lower limit of
quantitation) were set at 0.50*LLOQ for the purpose of calculating the mcOPA
antibody GMT.
¶Evaluable Immunogenicity Population.
#For serotype 6A, which is unique to Prevnar 13, a statistically significantly
greater response was defined for analysis in cohort 1 as the lower limit of the
2-sided 95% CI for the GMT ratio (Prevnar 13/PPSV23) greater than 2.
ÞOpen label administration of Prevnar 13.
β6A is a serotype unique to Prevnar 13
but not contained in PPSV23. |
1Modified double-blind means that the site
staff dispensing and administering the vaccine were unblinded, but all other
study personnel including the principal investigator and subject were blinded.
Clinical Trials Conducted In PPSV23 Previously Vaccinated
Adults
In a Phase 3 active-controlled, modified double-blind
clinical trial7 (Study 7) of Prevnar 13 in the US and Sweden, PPSV23
previously vaccinated adults aged ≥70 years who had received one dose of PPSV23
≥5 years prior were randomly assigned (1:1) to receive either Prevnar 13
or PPSV23.
The mcOPA antibody GMTs elicited by Prevnar 13 were
noninferior to those elicited by PPSV23 for the 12 serotypes in common, when
Prevnar 13 or PPSV23 were administered at a minimum of 5 years after a prior
dose of PPSV23. In addition, the lower limit of the 95% confidence interval for
the mcOPA antibody GMT ratio (Prevnar 13/PPSV23) was greater than 1 for 9 of
the serotypes in common.
For serotype 6A, which is unique to Prevnar 13, the
proportion of subjects with a ≥4-fold increase in mcOPA antibody titers
after Prevnar 13 (71.1%) was statistically significantly greater than after
PPSV23 (27.3%) in PPSV23 previously vaccinated adults aged ≥70 years.
mcOPA antibody GMTs for serotype 6A were statistically significantly greater
after Prevnar 13 compared with after PPSV23.
This clinical trial demonstrated that in adults aged
≥70 years and previously vaccinated with PPSV23 ≥5 years prior,
vaccination with Prevnar 13 elicited noninferior immune responses as compared
with revaccination with PPSV23 (see Table 26).
Table 26: mcOPA Antibody GMTs in PPSV23-Previously
Vaccinated Adults Aged ≥70 Years Given Prevnar 13 or PPSV23 (Study 7) *,†
,‡ ,§,¶,#
Serotype |
Prevnar 13
N=400-426 GMT |
PPSV23
N=395-445 GMT |
Prevnar 13 Relative to PPSV23 |
GMT Ratio |
(95% CI) |
1 |
93 |
66 |
1.4 |
(1.14, 1.72) |
3 |
59 |
53 |
1.1 |
(0.92, 1.31) |
4 |
613 |
263 |
2.3 |
(1.76, 3.10) |
5 |
100 |
61 |
1.6 |
(1.35, 2.00) |
6AÞ |
1056 |
160 |
6.6 |
(5.14, 8.49) |
6B |
1450 |
565 |
2.6 |
(2.00, 3.29) |
7F |
559 |
481 |
1.2 |
(0.97, 1.39) |
9V |
622 |
491 |
1.3 |
(1.08, 1.49) |
14 |
355 |
366 |
1.0 |
(0.76, 1.23) |
18C |
972 |
573 |
1.7 |
(1.33, 2.16) |
19A |
366 |
216 |
1.7 |
(1.40, 2.07) |
19F |
422 |
295 |
1.4 |
(1.16, 1.77) |
23F |
177 |
53 |
3.3 |
(2.49, 4.47) |
GMT, Geometric Mean Titer.
*Study conducted in US and Sweden NCT0054 6572 (Study 7).
†For the 12 common serotypes, noninferiority was defined as the lower limit of
the 2-sided 95% CI for GMT ratio (Prevnar 13/PPSV23) greater than 0.5.
‡For serotype 6A, which is unique to Prevnar 13, a statistically significantly
greater response was defined as the lower limit of the 2-sided 95% CI for the
GMT ratio (Prevnar 13/PPSV23) greater than 2.
§mcOPA antibody for the 11 serotypes unique to PPSV23 but not contained in
Prevnar 13 were not measured.
¶Individual mcOPA antibody assay values below the assay LLOQ (lower limit of quantitation)
were set at 0.50*LLOQ for the purpose of calculating the mcOPA antibody GMT.
#Evaluable Immunogenicity Population.
Þ6A is a serotype unique to Prevnar 13 but not contained in PPSV23. |
Clinical Trial Of Sequential Vaccination Of Prevnar 13 And
PPSV23 In PPSV23 Unvaccinated Adults
In a randomized clinical trial conducted in
PPSV23-unvaccinated adults 60 through 64 years of age8 (Study 8),
223 subjects received PPSV23 followed by Prevnar 13 one year later
(PPSV23/Prevnar 13), and 478 received only Prevnar 13. mcOPA antibody titers
were measured 1 month after vaccination with Prevnar 13 and are shown in Table
26. mcOPA antibody GMTs in those that received Prevnar 13 one year after PPSV23
were diminished when compared to those who received Prevnar 13 alone.
Similarly, in exploratory analyses in PPSV23 previously vaccinated adults
≥70 years of age in Study 7, diminished mcOPA antibody GMTs were observed
in those that received Prevnar 13 one year after PPSV23 when compared to those
who received Prevnar 13 alone.
Table 27: mcOPA Antibody GMTs for the Prevnar 13
Serotypes in PPSV23 Unvaccinated Adults Aged 60 Through 64 Years Given Prevnar
13 Alone or Prevnar 13 One Year After PPSV23 (Study 8) (PPSV23/Prevnar 13) *,†
,‡ ,§
Serotype |
Prevnar 13
N=410-457 |
PPSV23/Prevnar 13
N=180-196 |
GMT |
(95% CI) |
GMT |
(95% CI) |
1 |
219 |
(191, 252) |
88 |
(72, 109) |
3 |
78 |
(69, 88) |
54 |
(45, 65) |
4 |
2590 |
(2257, 2973) |
988 |
(802, 1218) |
5 |
258 |
(218, 305) |
112 |
(90, 139) |
6A¶ |
2947 |
(2536, 3426) |
1210 |
(962, 1522) |
6B |
2165 |
(1845, 2540) |
832 |
(654, 1059) |
7F |
1518 |
(1339, 1721) |
407 |
(342, 485) |
9V |
1279 |
(1142, 1432) |
495 |
(426, 575) |
14 |
790 |
(663, 941) |
515 |
(402, 659) |
18C |
1683 |
(1437, 1971) |
650 |
(504, 839) |
19A |
717 |
(629, 818) |
299 |
(248, 361) |
19F |
812 |
(702, 939) |
360 |
(293, 442) |
23F |
384 |
(312, 472) |
142 |
(104, 193) |
GMT =Geometric Mean Titer.
*Study conducted in US NCT00574 54 8 (Study 8).
†Evaluable Immunogenicity Population.
‡mcOPA antibody for the 11 serotypes unique to PPSV23 but not contained in
Prevnar 13 were not measured.
§Individual mcOPA antibody assay values below the assay LLOQ (lower limit of
quantitation) were set at 0.50*LLOQ for the purpose of calculating the mcOPA
antibody GMT.
¶6A is a serotype unique to Prevnar 13 but not contained in PPSV23. |
Also in Study 8, 266 subjects received Prevnar 13
followed by PPSV23 one year later (Prevnar 13/PPSV23). mcOPA antibody GMTs
following PPSV23 administered one year after Prevnar 13 (Prevnar 13/PPSV23)
were noninferior to those following a single dose of PPSV23 (N=237) for the 12 common
serotypes [the lower limit of the 95% CI for the GMT ratio [Prevnar 13/PPSV23
relative to PPSV23] was >0.5] (see Table 27). In Study 6, which was
conducted in PPSV23-unvaccinated adults 60 through 64 years of age, 108
subjects received PPSV23 3.5 to 4 years after Prevnar 13 (Prevnar 13/PPSV23)
and 414 received a single dose of PPSV23. Higher serotype-specific mcOPA
antibody GMT ratios [(Prevnar 13/PPSV23) / PPSV23] were generally observed
compared to the one year dosing interval in Study 8.
Table 28: mcOPA Antibody GMTs for the Prevnar 13
Serotypes in PPSV23- Unvaccinated Adults Aged 60 Through 64 Years Given PPSV23
One Year After Prevnar 13 Relative to PPSV23 Alone (Study 8) *,† ,‡ ,§
Serotype |
Prevnar 13/PPSV23
N=216-233 |
PPSV23
N=214-229 |
GMT Ratio (Prevnar 13/PPSV23) /PPSV23 |
GMT |
95% CI |
GMT |
95% CI |
Ratio |
95% CI |
1 |
155 |
(131, 182) |
161 |
(131, 198) |
1.0 |
(0.74, 1.25) |
3 |
127 |
(111, 145) |
83 |
(71,98) |
1.5 |
(1.23, 1.87) |
4 |
1409 |
(1202, 1651) |
1468 |
(1139, 1893) |
1.0 |
(0.71, 1.29) |
5 |
220 |
(184, 264) |
178 |
(144,222) |
1.2 |
(0.93, 1.64) |
6A¶ |
1366 |
(1122, 1663) |
400 |
(306, 524) |
3.4 |
(2.45, 4.77) |
6B |
1345 |
(1113, 1625) |
875 |
(689, 1111) |
1.5 |
(1.14,2.08) |
7F |
748 |
(653, 857) |
719 |
(598, 865) |
1.0 |
(0.83, 1.31) |
9V |
848 |
(731, 984) |
824 |
(694, 977) |
1.0 |
(0.82, 1.29) |
14 |
711 |
(580, 872) |
869 |
(677, 1115) |
0.8 |
(0.59, 1.13) |
18C |
1115 |
(925, 1344) |
912 |
(707, 1177) |
1.2 |
(0.89, 1.67) |
19A |
471 |
(408, 543) |
390 |
(318, 477) |
1.2 |
(0.94, 1.55) |
19F |
819 |
(697, 963) |
626 |
(504,779) |
1.3 |
(1.00, 1.71) |
23F |
216 |
(169, 277) |
84 |
(62, 114) |
2.6 |
(1.74, 3.79) |
GMT =Geometric Mean Titer.
*Study conducted in US NCT00574 54 8 (Study 8).
†Evaluable Immunogenicity Population.
‡mcOPA antibody for the 11 serotypes unique to PPSV23 but not contained in
Prevnar 13 were not measured.
§Individual mcOPA antibody assay values below the assay LLOQ (lower limit of
quantitation) were set at 0.50*LLOQ for the purpose of calculating the mcOPA
antibody GMT.
¶6A is a serotype unique to Prevnar 13 but not contained in PPSV23. Anti-6A
mcOPA antibody GMTs were descriptive in nature. |
Concomitant Vaccine Administration
Infants And Toddlers
The concomitant administration of routine US infant
vaccines [see DRUG INTERACTIONS] with Prevnar 13 was evaluated in two
studies: Study 2 [see Clinical Studies], Pneumococcal Immune Responses Following
Three Doses2, and the US lot consistency study3 (Study
3). In Study 3, subjects were randomly assigned to receive one of 3 lots of
Prevnar 13 or Prevnar in a 2:2:2:1 ratio. The total number of infants
vaccinated was 6632 (Study 2) and 16993 (Study 3). Immune
responses to concomitant vaccine antigens were compared in infants receiving
Prevnar and Prevnar 13. Responses to diphtheria toxoid, tetanus toxoid,
pertussis, polio types 1, 2, and 3, hepatitis B, PRP-T, PRP-OMP, measles, and
varicella antigens in Prevnar 13 recipients were similar to those in Prevnar
recipients. Based on limited data, responses to mumps and rubella antigens in
Prevnar 13 recipients were similar to those in Prevnar recipients.
Adults ≥50 Years Of Age
Concomitant Administration With QIV
Prevnar 13 was administered to PPSV23 previously
vaccinated adults ≥50 years of age concomitantly with a US-licensed
inactivated influenza vaccine, quadrivalent (IIV4) (Fluzone Quadrivalent) for
the 2014/2015 influenza season (Study 13) [see ADVERSE REACTIONS and DRUG
INTERACTIONS]. One study group received Prevnar 13 and IIV4 concurrently,
followed approximately one month later by placebo. A second study group
received IIV4 and placebo concurrently, followed approximately one month later
by Prevnar 13.
Serotype-specific pneumococcal antibody responses were
measured one month after Prevnar 13 vaccination as OPA GMTs. Noninferiority was
demonstrated for each pneumococcal serotype if the lower limit of the 2-sided
95% CI for the GMT ratio (Prevnar 13 + IIV4 relative to Prevnar 13 alone) was
>0.5. Although OPA antibody responses to Prevnar 13 generally appeared to be
slightly lower when Prevnar 13 was administered concomitantly with IIV4
compared to Prevnar 13 administered alone, noninferiority was demonstrated for
all Prevnar 13 pneumococcal serotypes evaluated in Study 13.
Strain-specific influenza antibody responses were
measured one month after IIV4 as hemagglutinin inhibition assay (HAI) titers.
HAI GMTs were evaluated for each IIV4 strain in Study 13. Noninferiority was
demonstrated if the lower limit of the 2-sided 95% CI for the HAI GMT ratio
(Prevnar 13 + IIV4 relative to IIV4 + Placebo) was >0.5. Noninferiority was
demonstrated for each IIV4 vaccine strain evaluated in Study 13.
Concomitant Administration With TIV
Two randomized, double-blind clinical trials evaluated
the immunogenicity of Prevnar 13 given with IIV3 (Fall 2007/ Spring 2008
Fluarix, A/H1N1, A/H3N2, and B strains) in PPSV23 unvaccinated adults aged 50
through 59 years10 (Study 10, conducted in the US) and in adults
≥65 years11 (Study 11, conducted in Europe). Based on analysis
of the primary pre-specified comparison of serotype specific anti-capsular
polysaccharide IgG GMCs, noninferiority was met for all serotypes in adults
50-59 years of age and for 12 of 13 serotypes in adults ≥65years of age.
REFERENCES
ClinicalTrials.gov identifiers for studies included
below:
1. Study 1 NCT00205803
2. Study 2 NCT00373958
3. Study 3 NCT00444457
4. Study 4 NCT00452452
5. Study 5 NCT00761631
6. Study 6 NCT00427895
7. Study 7 NCT00546572
8. Study 8 NCT00574548
9. Study 9 NCT00500266
10. Study 10 NCT00521586
11. Study 11 NCT00492557
13. Study 13 NCT02124161