Pneumococcal Vaccine Naïve Adults 18 Years of Age and Older
The safety of Prevnar 20 in adults 18 years of age and older with no history of pneumococcal vaccination was evaluated in five studies (Studies 1–5). In the main cohort of Study 1 (NCT03760146) and in Study 2 (NCT03313037), participants ≥60 years of age and participants 60 through 64 years of age, respectively, received a single dose of Prevnar 20 followed 1 month later with administration of saline placebo or received a single dose of Prevnar 13 followed 1 month later with a dose of PNEUMOVAX® 23 (PPSV23). The 2 other cohorts of Study 1, participants 50 through 59 years of age and participants 18 through 49 years of age, received a single vaccination with Prevnar 20 or Prevnar 13. In Study 3 (NCT03828617), participants 18 through 49 years of age received a single vaccination with Prevnar 20 or Prevnar 13. In Studies 4 (NCT02955160) and 5 (NCT03642847), which were smaller studies conducted early in the clinical development of Prevnar 20, participants 18 through 49 years of age received a single dose of Prevnar 20 or an active control (Tdap or Prevnar 13).
Adults ≥65 Years of Age Previously Immunized with a Pneumococcal Vaccine
The safety of Prevnar 20 in adults 65 years of age and older with pneumococcal vaccination given as routine care prior to enrollment was assessed in Study 6 (NCT03835975). Participants were enrolled into 1 of 3 cohorts based on their prior pneumococcal vaccination history (PPSV23 only ≥1 to ≤5 years prior to enrollment, Prevnar 13 only ≥6 months prior to enrollment, or Prevnar 13 followed by PPSV23 [with PPSV23 given ≥1 year prior to enrollment]). Participants in 2 of the cohorts received a single vaccination with Prevnar 20 or control pneumococcal vaccine (Prevnar 13), and the other cohort received a single vaccination with Prevnar 20. only.
Demographics of Trial Participants
In the three main trials (Studies 1, 3, and 6), participants were predominantly female (52.0% to 65.9%) across groups defined by age and prior pneumococcal vaccination status within the Prevnar 20 and control vaccine groups. Across all 3 trials combined, 59.8% of participants were 60 years of age and older, 6.9% were 50 through 59 years of age, and 33.3% were 18 through 49 years of age. In Studies 1 and 3, participants were 80.7% White, 14.2% Black, 2.1% Asian, and 10.3% Hispanic. In Study 6, participants were predominantly White (92.4%). Participants were primarily from the United States; however a portion of participants 65 years of age and older were enrolled from Sweden in Study 1 (5.7% of participants 60 years of age and older in that study) and also in Study 6 (35.5% of participants with prior PPSV23 only).
In the three main trials, participants with pre-existing underlying diseases were enrolled if the medical condition was stable (did not require a significant change in therapy in the 6 weeks before receipt of study vaccine or any hospitalization for worsening disease within 12 weeks before receipt of study vaccine). In Study 1, approximately one-third of all participants had risk factors that placed them at increased risk for serious pneumococcal disease, including smoking (12.9%), stable medical conditions of chronic cardiovascular disease (5.5%), chronic pulmonary disease including asthma (8.7%), chronic liver disease (0.4%), and diabetes mellitus (13.9%).
Safety Monitoring
Solicited adverse reactions for Prevnar 20 in the three main trials were monitored in participants recording daily into an electronic diary their local adverse reactions for 10 consecutive days and systemic reactions for 7 consecutive days following vaccination. Across all trials, serious and nonserious adverse events were collected for 1 month after each vaccination. Safety follow-up of serious adverse events (SAEs) continued through 6 months after vaccination with Prevnar 20 or Prevnar 13 (or other appropriate control vaccine), as applicable. Newly diagnosed chronic medical conditions occurring within 6 months after vaccination were also collected via telephone contact.
Serious Adverse Events
Across all 6 clinical trials combined, performed in adults of all ages, naïve to and with prior pneumococcal vaccination, the proportion of participants reporting 1 or more SAEs within 6 months after vaccination with Prevnar 20 was 1.5% (67 of 4552 participants). This was similar to the proportion of participants with SAEs after vaccination with Prevnar 13 or other applicable control vaccine (1.8%, 44 of 2496). The proportions of participants with SAEs occurring within 1 month after vaccination with Prevnar 20 or with Prevnar 13 or other applicable control vaccine were both 0.4% (19 of 4552 participants and 11 of 2496 participants, respectively). There were no notable patterns or imbalances between vaccine groups for specific categories of serious adverse events that would suggest a causal relationship to Prevnar 20.
Solicited Adverse Reactions
The frequency and severity of the local adverse reactions (redness, swelling, and pain at the injection site) prompted daily in the 10 days after Prevnar 20 vaccination in adults naïve to pneumococcal vaccination (Study 1) and in adults with prior pneumococcal vaccination (Study 6) are shown in Table 1 and Table 2, respectively. The frequency and severity of the systemic adverse reactions (fever, fatigue, headache, muscle pain, and joint pain) prompted daily in the 7 days after Prevnar 20 vaccination in adults naïve to pneumococcal vaccination (Study 1) and in adults with prior pneumococcal vaccination (Study 6) are shown in Table 3 and Table 4, respectively.
Table 1. Percentage of Participants With Solicited Local Adverse Reactions, by Maximum Severity, Within 10 Days After Vaccination in Pneumococcal Vaccine-Naïve Adults - Study 1 | 18–49 Years of Age | 50–59 Years of Age | ≥60 Years of Age |
|---|
| Vaccine Group |
|---|
Prevnar 20 (N=335) % | Prevnar 13 (N=112) % | Prevnar 20 (N=331) % | Prevnar 13 (N=111) % | Prevnar 20/Saline (N=1505) % | Prevnar 13/PPSV23 (N=1483) % |
|---|
| Local Reaction |
|---|
| Pain at injection site Mild = does not interfere with activity; moderate = interferes with activity; severe = prevents daily activity. | | | | | | |
| Any | 81.2 | 82.1 | 72.5 | 69.4 | 55.4 | 54.1 |
| Mild | 42.7 | 52.7 | 53.5 | 52.3 | 45.3 | 44.6 |
| Moderate | 38.2 | 28.6 | 17.8 | 16.2 | 9.9 | 9.2 |
| Severe | 0.3 | 0.9 | 1.2 | 0.9 | 0.2 | 0.3 |
| Swelling | | | | | | |
| Any (>2.0 cm) | 11.6 | 12.5 | 8.8 | 10.8 | 7.5 | 8.0 |
| Mild | 7.2 | 8.9 | 5.7 | 7.2 | 4.8 | 4.9 |
| Moderate | 4.5 | 3.6 | 3.0 | 3.6 | 2.4 | 2.8 |
| Severe | 0 | 0 | 0 | 0 | 0.3 | 0.3 |
| Redness | | | | | | |
| Any (>2.0 cm) | 9.0 | 9.8 | 8.2 | 5.4 | 7.3 | 6.2 |
| Mild | 3.0 | 5.4 | 5.1 | 2.7 | 3.7 | 3.8 |
| Moderate | 5.4 | 4.5 | 2.7 | 2.7 | 2.8 | 2.2 |
| Severe | 0.6 | 0 | 0.3 | 0 | 0.8 | 0.2 |
| Any local reaction "Any local reaction" includes all participants who reported any injection site reaction (pain, swelling, or redness) as "mild", "moderate", or "severe" during Day 1 to Day 10 after vaccination. | 81.2 | 82.1 | 72.8 | 70.3 | 57.4 | 56.0 |
Table 2. Percentage of Participants With Solicited Local Adverse Reactions, by Maximum Severity, Within 10 Days After Vaccination in Adults 65 Years of Age and Older With Prior Pneumococcal Vaccination – Study 6Study 6 was conducted in the United States and in Sweden (NCT03835975)
,Open-label administration of Prevnar 20.
| Prior Pneumococcal Vaccination Status Includes participants who previously received either PPSV23 ≥1 to ≤5 years before enrollment (PPSV23), Prevnar 13 ≥6 months before enrollment (Prevnar 13), or Prevnar 13 followed by PPSV23 ≥1 year before enrollment (Prevnar 13 and PPSV23) in the study. |
|---|
| PPSV23 | Prevnar 13 | Prevnar 13 and PPSV23 |
|---|
| Vaccine Group |
|---|
| Prevnar 20 (N=253) % | Prevnar 13 (N=121) % | Prevnar 20 (N=245) % | PPSV23 (N=126) % | Prevnar 20 (N=125) % |
|---|
| Local Reaction |
|---|
| Pain at the injection site Mild = does not interfere with activity; moderate = interferes with activity; severe = prevents daily activity. | | | | | |
| Any | 50.2 | 43.0 | 61.2 | 56.3 | 52.8 |
| Mild | 45.8 | 38.8 | 54.7 | 40.5 | 47.2 |
| Moderate | 4.3 | 3.3 | 6.1 | 14.3 | 5.6 |
| Severe | 0 | 0.8 | 0.4 | 1.6 | 0 |
| Swelling | | | | | |
| Any (>2.0 cm) | 9.9 | 6.6 | 9.4 | 14.3 | 4.0 |
| Mild | 5.1 | 6.6 | 5.7 | 6.3 | 1.6 |
| Moderate | 3.6 | 0 | 3.7 | 7.1 | 2.4 |
| Severe | 1.2 | 0 | 0 | 0.8 | 0 |
| Redness | | | | | |
| Any (>2.0 cm) | 7.9 | 2.5 | 8.6 | 12.7 | 4.8 |
| Mild | 3.6 | 1.7 | 2.9 | 4.8 | 1.6 |
| Moderate | 3.2 | 0.8 | 5.3 | 7.1 | 3.2 |
| Severe | 1.2 | 0 | 0.4 | 0.8 | 0 |
| Any local reaction "Any local reaction" includes all participants who reported any injection site reaction (pain, swelling, or redness) as "mild", "moderate", or "severe" during Day 1 to Day 10 after vaccination. | 53.0 | 43.8 | 64.1 | 57.9 | 54.4 |
Table 3. Percentage of Participants With Solicited Systemic Reactions, by Maximum Severity, Within 7 Days After Vaccination in Pneumococcal Vaccine-Naïve Adults – Study 1 | 18 through 49 Years of Age | 50 through 59 Years of Age | ≥60 Years of Age |
|---|
| Vaccine Group |
|---|
Prevnar 20 (N=335) % | Prevnar 13 (N=112) % | Prevnar 20 (N=331) % | Prevnar 13 (N=111) % | Prevnar 20/Saline (N=1505) % | Prevnar 13/PPSV23 (N=1483) % |
|---|
| Systemic Reaction |
|---|
| Muscle pain | | | | | | |
| Any | 66.6 | 74.1 | 49.8 | 49.5 | 39.1 | 37.3 |
| Mild | 36.4 | 42.0 | 33.8 | 31.5 | 28.9 | 26.8 |
| Moderate | 29.0 | 31.3 | 15.4 | 17.1 | 9.8 | 10.0 |
| Severe | 1.2 | 0.9 | 0.6 | 0.9 | 0.4 | 0.5 |
| Fatigue | | | | | | |
| Any | 42.7 | 43.8 | 39.3 | 36.0 | 30.2 | 30.7 |
| Mild | 18.8 | 20.5 | 21.1 | 18.0 | 16.1 | 17.5 |
| Moderate | 22.1 | 19.6 | 17.2 | 15.3 | 12.8 | 11.9 |
| Severe | 1.8 | 3.6 | 0.9 | 2.7 | 1.2 | 1.2 |
| Headache | | | | | | |
| Any | 38.8 | 33.9 | 32.3 | 36.0 | 21.5 | 23.3 |
| Mild | 21.5 | 16.1 | 20.5 | 21.6 | 15.5 | 17.0 |
| Moderate | 14.6 | 17.0 | 10.9 | 13.5 | 5.4 | 5.9 |
| Severe | 2.7 | 0.9 | 0.9 | 0.9 | 0.7 | 0.3 |
| Joint pain | | | | | | |
| Any | 13.4 | 17.9 | 15.4 | 20.7 | 12.6 | 13.7 |
| Mild | 6.3 | 8.9 | 10.6 | 12.6 | 6.9 | 7.1 |
| Moderate | 7.2 | 8.0 | 4.8 | 7.2 | 5.4 | 6.3 |
| Severe | 0 | 0.9 | 0 | 0.9 | 0.3 | 0.2 |
| Fever | | | | | | |
| ≥38.0°C | 1.2 | 1.8 | 1.5 | 0.9 | 0.9 | 0.8 |
| ≥38.0°C to 38.4°C | 0.6 | 0 | 0.6 | 0.9 | 0.3 | 0.4 |
| >38.4°C to 38.9°C | 0.3 | 0 | 0.3 | 0 | 0.3 | 0.2 |
| >38.9°C to 40.0°C | 0.3 | 1.8 | 0.3 | 0 | 0 | 0 |
| >40.0°C | 0 | 0 | 0.3 | 0 | 0.3 | 0.2 |
| Any systemic reaction "Any systemic reaction" includes all participants who reported any fever ≥38.0°C or any other systemic reaction (fatigue, headache, joint pain, or muscle pain) as "mild", "moderate", or "severe" during Day 1 to Day 7 after vaccination. | 79.4 | 83.0 | 69.5 | 67.6 | 55.2 | 55.4 |
| Use of antipyretic or pain medication Severity was not collected for use of antipyretic or pain medication. The numbers listed reflect "yes" responses (i.e., number of reactions reported). | 25.7 | 23.2 | 24.5 | 27.9 | 18.5 | 20.4 |
Table 4. Percentage of Participants With Solicited Systemic Reactions, by Maximum Severity, Within 7 Days After Vaccination in Adults 65 Years of Age and Older With Prior Pneumococcal Vaccination – Study 6Study 6 was conducted in the United States and in Sweden (NCT03835975).
,Open-label administration of Prevnar 20.
| Prior Pneumococcal Vaccination Status Includes participants who previously received either PPSV23 ≥1 to ≤5 years before enrollment (PPSV23), Prevnar 13 ≥6 months before enrollment (Prevnar 13), or Prevnar 13 followed by PPSV23 ≥1 year before enrollment (Prevnar 13 and PPSV23) in the study. |
|---|
| PPSV23 | Prevnar 13 | Prevnar 13 and PPSV23 |
|---|
| Vaccine Group |
|---|
| Prevnar 20 (N=253) % | Prevnar 13 (N=121) % | Prevnar 20 (N=245) % | PPSV23 (N=126) % | Prevnar 20 (N=125) % |
|---|
| Systemic Reaction |
|---|
| Muscle pain | | | | | |
| Any | 32.0 | 31.4 | 33.9 | 46.0 | 37.6 |
| Mild | 26.1 | 24.0 | 25.3 | 31.7 | 28.0 |
| Moderate | 5.5 | 5.0 | 8.6 | 11.9 | 8.8 |
| Severe | 0.4 | 2.5 | 0 | 2.4 | 0.8 |
| Fatigue | | | | | |
| Any | 28.9 | 22.3 | 31.0 | 33.3 | 32.8 |
| Mild | 17.8 | 9.9 | 19.6 | 19.8 | 19.2 |
| Moderate | 11.1 | 9.9 | 10.2 | 13.5 | 12.0 |
| Severe | 0 | 2.5 | 1.2 | 0 | 1.6 |
| Headache | | | | | |
| Any | 17.8 | 18.2 | 13.5 | 21.4 | 19.2 |
| Mild | 12.6 | 12.4 | 9.8 | 20.6 | 12.8 |
| Moderate | 4.7 | 5.8 | 3.7 | 0.8 | 5.6 |
| Severe | 0.4 | 0 | 0 | 0 | 0.8 |
| Joint pain | | | | | |
| Any | 6.7 | 10.7 | 11.8 | 15.9 | 16.8 |
| Mild | 4.7 | 5.0 | 7.8 | 10.3 | 12.8 |
| Moderate | 2.0 | 5.0 | 4.1 | 5.6 | 4.0 |
| Severe | 0 | 0.8 | 0 | 0 | 0 |
| Fever | | | | | |
| ≥38.0°C | 0.8 | 0 | 0 | 1.6 | 0 |
| ≥38.0°C to 38.4°C | 0.8 | 0 | 0 | 0.8 | 0 |
| >38.4°C to 38.9°C | 0 | 0 | 0 | 0.8 | 0 |
| >38.9°C to 40.0°C | 0 | 0 | 0 | 0 | 0 |
| >40.0°C | 0 | 0 | 0 | 0 | 0 |
| Any systemic reaction "Any systemic reaction" includes all participants who reported any fever ≥38.0°C or any other systemic reaction (fatigue, headache, joint pain, or muscle pain) as "mild", "moderate", or "severe" during Day 1 to Day 7 after vaccination. | 51.8 | 43.8 | 50.2 | 59.5 | 52.8 |
| Use of antipyretic or pain medication Severity was not collected for use of antipyretic or pain medication. The numbers listed reflect "yes" responses (i.e., number of reactions reported). | 15.8 | 14.9 | 17.1 | 19.8 | 17.6 |
Risk Summary
All pregnancies have a risk of birth defect, loss, or other adverse outcomes. In the US general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. There are no adequate and well-controlled studies of Prevnar 20 in pregnant women. Available data on Prevnar 20 administered to pregnant women are insufficient to inform vaccine-associated risks in pregnancy.
A developmental toxicity study was performed in female rabbits administered Prevnar 20 prior to mating and during gestation. The dose was 0.5 mL at each occasion (a single human dose is 0.5 mL). This study revealed no evidence of harm to the fetus due to Prevnar 20 (see Data).
Data
Animal Data
In a developmental toxicity study, female rabbits were administered Prevnar 20 by intramuscular injection twice prior to mating (17 days and 4 days prior to mating) and twice during gestation (Gestation Days 10 and 24), 0.5 mL/rabbit/occasion (a single human dose). No adverse effects on pre-weaning development were observed. There were no vaccine-related fetal malformations or variations.
Risk Summary
It is not known whether Prevnar 20 is excreted in human milk. Data are not available to assess the effects of Prevnar 20 on the breastfed infant or on milk production/excretion. The developmental and health benefits of breastfeeding should be considered along with the mother's clinical need for Prevnar 20 and any potential adverse effects on the breastfed child from Prevnar 20 or from the underlying maternal condition. For preventive vaccines, the underlying maternal condition is susceptibility to disease prevented by the vaccine.
Immunogenicity of Prevnar 20 in Pneumococcal Vaccine Naïve Adults
Prevnar 20 effectiveness against invasive pneumococcal disease caused by the 20 vaccine serotypes and against pneumonia caused by the 13 serotypes in Prevnar 13 was inferred from comparative immunogenicity to US-licensed pneumococcal vaccines (Prevnar 13 and PPSV23). Study 1, conducted in the United States and Sweden, was designed to evaluate immunologic noninferiority of Prevnar 20 to Prevnar 13 (for the 13 original S. pneumoniae serotypes) and PPSV23 (for the 7 new S. pneumoniae serotypes) in pneumococcal vaccine naive adults ≥60 years of age. Immune responses elicited by Prevnar 20 and the control pneumococcal vaccines were measured by an OPA assay. OPA assays were used to measure functional antibodies to S. pneumoniae.
Study 1 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., smoking) that are known to increase the risk of serious pneumococcal pneumonia and IPD. A stable medical condition was defined as a medical condition not requiring significant change in therapy in the previous 6 weeks (i.e., change to new therapy category due to worsening disease) or any hospitalization for worsening disease within 12 weeks before receipt of the study vaccine.
Comparison of Immune Responses of Prevnar 20 to Prevnar 13 and PPSV23 in Pneumococcal Vaccine Naïve Adults ≥60 Years of Age
In a randomized, active-controlled, double-blind noninferiority clinical trial (Study 1) of Prevnar 20 in the United States and Sweden, pneumococcal vaccine -naïve adults 18 years of age and older were enrolled into 1 of 3 cohorts based on their age at enrollment and randomized to receive either Prevnar 20 or control. Participants 60 years of age and older were randomly assigned (1:1 ratio) to Prevnar 20 followed 1 month later with saline placebo or to Prevnar 13 followed 1 month later with PPSV23.
Serotype-specific OPA GMTs were measured before the first vaccination and 1 month after each vaccination. Noninferiority of immune responses, OPA GMTs 1 month after vaccination, with Prevnar 20 to a control vaccine for a serotype was declared if the lower bound of the 2 sided 95% CI for the GMT ratio (Prevnar 20/Prevnar 13; Prevnar 20/PPSV23) for that serotype was greater than 0.5.
In adults 60 years of age and older, immune responses to all 13 matched serotypes elicited by Prevnar 20 were noninferior to the immune responses to the serotypes elicited by Prevnar 13 one month after vaccination. Immune responses to 6 out of the 7 additional serotypes induced by Prevnar 20 were noninferior to the immune responses to these same serotypes induced by PPSV23 one month after vaccination. The response to serotype 8 missed the prespecified statistical noninferiority criterion by a small margin (the lower bound of the 2-sided 95% CI for the GMT ratio being 0.49 versus >0.50) (Table 6).
In supportive analyses, 77.8% of participants in the Prevnar 20 group achieved a ≥4-fold rise in serotype 8 OPA titers from before vaccination to 1 month post-vaccination.
Table 6. OPA GMTs 1 Month After Vaccination in Adults 60 Years of Age and Older Given Prevnar 20 Compared to Prevnar 13 for the 13 Matched Serotypes and PPSV23 for the 7 Additional Serotypes (Study 1),,, | Prevnar 20 (N = 1157–1430) | Prevnar 13 (N = 1390–1419) | PPSV23 (N = 1201–1319) | Vaccine Comparison |
|---|
| GMT | GMT | GMT | GMT Ratio (95% CI) |
|---|
| Abbreviations: CI = confidence interval; GMT = geometric mean titer; LLOQ = lower limit of quantitation; N = number of participants; OPA = opsonophagocytic activity; PPSV23 = pneumococcal polysaccharide vaccine (23-valent). |
| Serotype |
| 1 | 123 | 154 | | 0.80 (0.71, 0.90) |
| 3 | 41 | 48 | | 0.85 (0.78, 0.93) |
| 4 | 509 | 627 | | 0.81 (0.71, 0.93) |
| 5 | 92 | 110 | | 0.83 (0.74, 0.94) |
| 6A | 889 | 1165 | | 0.76 (0.66, 0.88) |
| 6B | 1115 | 1341 | | 0.83 (0.73, 0.95) |
| 7F | 969 | 1129 | | 0.86 (0.77, 0.96) |
| 9V | 1456 | 1568 | | 0.93 (0.82, 1.05) |
| 14 | 747 | 747 | | 1.00 (0.89, 1.13) |
| 18C | 1253 | 1482 | | 0.85 (0.74, 0.97) |
| 19A | 518 | 645 | | 0.80 (0.71, 0.90) |
| 19F | 266 | 333 | | 0.80 (0.70, 0.91) |
| 23F | 277 | 335 | | 0.83 (0.70, 0.97) |
| Additional Serotypes |
| 8 | 466 | | 848 | 0.55 (0.49, 0.62) |
| 10A | 2008 | | 1080 | 1.86 (1.63, 2.12) |
| 11A | 4427 | | 2535 | 1.75 (1.52, 2.01) |
| 12F | 2539 | | 1717 | 1.48 (1.27, 1.72) |
| 15B | 2398 | | 769 | 3.12 (2.62, 3.71) |
| 22F | 3666 | | 1846 | 1.99 (1.70, 2.32) |
| 33F | 5126 | | 3721 | 1.38 (1.21, 1.57) |
Immunobridging in Pneumococcal Vaccine Naïve Adults 18 Through 59 Years of Age
In Study 1 (described above), the effectiveness of Prevnar 20 in adults 50 through 59 years of age and in adults 18 through 49 years of age was inferred following comparison of the immune response to each of the 20 vaccine serotypes in each of these age groups to the corresponding serotype-specific immune responses in adults 60 through 64 years of age following Prevnar 20 (immunobridging). In Study 1, pneumococcal vaccine-naïve participants 50 through 59 years of age and 18 through 49 years of age were randomly assigned (3:1 ratio) to receive 1 vaccination with Prevnar 20 or Prevnar 13. Serotype-specific OPA GMTs were measured before vaccination and 1 month after vaccination. A comparative analysis of Prevnar 20 in the younger age group versus Prevnar 20 in adults 60 through 64 years of age for each vaccine serotype was performed to support the indication in adults 18 through 49 years of age and 50 through 59 years of age. Immunobridging was to be declared successful if the lower bound of the 2-sided 95% CI for the GMT ratio (Prevnar 20 in participants 18 through 49 years of age/60 through 64 years of age and in participants 50 through 59 years of age/60 through 64 years of age) for the 20 serotypes was >0.5 (2-fold). Prevnar 20 elicited serotype-specific immune responses to each of the 20 vaccine serotypes in both of the younger age groups that were within 2-fold of the corresponding serotype-specific responses in adults 60 through 64 years of age, when measured 1 month after vaccination (Table 7).
Table 7. Comparisons of OPA GMTs 1 Month After Prevnar 20 in Adults 18 Through 49 or 50 Through 59 Years of Age to Adults 60 Through 64 Years of Age (Study 1),,, | 18–49 Years (N = 251–317) | 60–64 Years (N = 765–941) | 18–49 Years Relative to 60–64 Years | 50–59 Years (N = 266–320) | 60–64 Years (N = 765–941) | 50–59 Years Relative to 60–64 Years |
|---|
| GMT | GMT | GMT Ratio (95% CI) | GMT | GMT | GMT Ratio (95% CI) |
|---|
| Abbreviations: CI = confidence interval; GMT = geometric mean titer; LLOQ = lower limit of quantitation; N = number of participants; OPA = opsonophagocytic activity; PPSV23 = pneumococcal polysaccharide vaccine 23-valent vaccine. |
| Serotype |
| 1 | 163 | 132 | 1.23 (1.01, 1.50) | 136 | 132 | 1.03 (0.84, 1.26) |
| 3 | 42 | 42 | 1.00 (0.87, 1.16) | 43 | 41 | 1.06 (0.92, 1.22) |
| 4 | 1967 | 594 | 3.31 (2.65, 4.13) | 633 | 578 | 1.10 (0.87, 1.38) |
| 5 | 108 | 97 | 1.11 (0.91, 1.36) | 85 | 97 | 0.88 (0.72, 1.07) |
| 6A | 3931 | 1023 | 3.84 (3.06, 4.83) | 1204 | 997 | 1.21 (0.95, 1.53) |
| 6B | 4260 | 1250 | 3.41 (2.73, 4.26) | 1503 | 1199 | 1.25 (1.00, 1.56) |
| 7F | 1873 | 1187 | 1.58 (1.30, 1.91) | 1047 | 1173 | 0.89 (0.74, 1.07) |
| 9V | 6041 | 1727 | 3.50 (2.83, 4.33) | 1726 | 1688 | 1.02 (0.83, 1.26) |
| 14 | 1848 | 773 | 2.39 (1.93, 2.96) | 926 | 742 | 1.25 (1.01, 1.54) |
| 18C | 4460 | 1395 | 3.20 (2.53, 4.04) | 1805 | 1355 | 1.33 (1.06, 1.68) |
| 19A | 1415 | 611 | 2.31 (1.91, 2.81) | 618 | 600 | 1.03 (0.85, 1.25) |
| 19F | 655 | 301 | 2.17 (1.76, 2.68) | 287 | 290 | 0.99 (0.80, 1.22) |
| 23F | 1559 | 325 | 4.80 (3.65, 6.32) | 549 | 328 | 1.68 (1.27, 2.22) |
| Additional Serotypes |
| 8 | 867 | 508 | 1.71 (1.38, 2.12) | 487 | 502 | 0.97 (0.78, 1.20) |
| 10A | 4157 | 2570 | 1.62 (1.31, 2.00) | 2520 | 2437 | 1.03 (0.84, 1.28) |
| 11A | 7169 | 5420 | 1.32 (1.04, 1.68) | 6417 | 5249 | 1.22 (0.96, 1.56) |
| 12F | 5875 | 3075 | 1.91 (1.51, 2.41) | 3445 | 3105 | 1.11 (0.88, 1.39) |
| 15B | 4601 | 3019 | 1.52 (1.13, 2.05) | 3356 | 2874 | 1.17 (0.88, 1.56) |
| 22F | 7568 | 4482 | 1.69 (1.30, 2.20) | 3808 | 4228 | 0.90 (0.69, 1.17) |
| 33F | 7977 | 5693 | 1.40 (1.10, 1.79) | 5571 | 5445 | 1.02 (0.81, 1.30) |
Immunogenicity of Prevnar 20 in Adults Previously Vaccinated With Pneumococcal Vaccine
A randomized, open-label clinical trial (Study 6) described immune responses to Prevnar 20 in adults 65 years of age and older previously vaccinated with PPSV23 (≥1 to ≤5 years prior to enrollment), previously vaccinated with Prevnar 13 (≥6 months prior to enrollment), or previously vaccinated with Prevnar 13 followed by PPSV23 (with PPSV23 vaccination ≥1 year prior to enrollment). Participants in this clinical trial previously vaccinated with Prevnar 13 (Prevnar 13 only or followed by PPSV23) were enrolled at sites in the United States and participants previously vaccinated with PPSV23 only were also enrolled from Swedish sites (35.5% in that category). Immune responses elicited by Prevnar 20 were measured by an OPA assay.
OPA GMTs in participants who received PPSV23 1 to 5 years prior to Prevnar 20 were diminished compared to OPA GMTs in participants who received Prevnar 13 at least 6 months previously and compared to OPA GMTs in participants who received Prevnar 13 followed by PPSV23, with the last PPSV23 dose given at least 1 year prior to Prevnar 20.
This product's labeling may have been updated. For the most recent prescribing information, please visit www.pfizer.com.
US Govt. License No. 3
LAB-1436-1.0
CPT Code 90677