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Postpartum HPV Vaccination

Postpartum HPV Vaccination: Acceptability, Uptake and Immunogenicity

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03451071
Enrollment
195
Registered
2018-03-01
Start date
2019-04-29
Completion date
2020-12-30
Last updated
2021-10-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HPV-Related Malignancy

Brief summary

Human papillomavirus (HPV)-related cancers are on the rise in the United States. Furthermore, greater than 90% of cervical cancer cases are attributable to HPV, and cervical cancer disproportionately affects women of color in both incidence and mortality. Due to low HPV vaccine uptake in the US, innovative approaches to vaccinating vulnerable populations are necessary in order to maximize the cancer prevention potential of this vaccine. The puerperium is a time period when women are engaged in the healthcare system and have almost universal access to affordable health care. Two prior studies have shown that postpartum HPV vaccination is acceptable to patients, and high rates of vaccination were achieved in these primarily Hispanic populations. However, data show that the immune response in young women is less robust than in adolescents, and no studies have examined immunogenicity in postpartum women specifically. We propose an HPV vaccination pilot study in women who receive postpartum care at University of Alabama at Birmingham (UAB) hospital. We will examine the acceptability, uptake and immunogenicity of the vaccine in the postpartum setting.

Interventions

Gardasil 9

Sponsors

Merck Sharp & Dohme LLC
CollaboratorINDUSTRY
University of Alabama at Birmingham
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
16 Years to 26 Years
Healthy volunteers
No

Inclusion criteria

* postpartum day 0-4 after vaginal or Cesarean delivery at UAB hospital

Exclusion criteria

* Fetal demise or miscarriage, autoimmune disorder, HIV, Hepatitis B/C, chronic steroid use, preeclampsia, non-English speaking

Design outcomes

Primary

MeasureTime frameDescription
Patient Indication of Willingness to Accept the Vaccine Based on Survey1 day (at the time of initial recruitment /survey)This was established using a survey to indicate willingness to receive vaccine.

Secondary

MeasureTime frameDescription
Uptake of the Vaccine Dosesat baselineThose that actually received the vaccine and each time point.
Serum Titers of Vaccine-specific HPV Typesbaseline and 7 monthsImmunogenicity

Countries

United States

Participant flow

Pre-assignment details

195 women consented to participate in the study. 139 consented to survey only, 56 consented to survey and Gardasil9 vaccine.

Participants by arm

ArmCount
Gardasil9
Gardasil9: Gardasil 9
56
Total56

Withdrawals & dropouts

PeriodReasonFG000
Final Questionnaire and Blood DrawLost to Follow-up4
First VaccineWithdrawal by Subject1
Second VaccineLost to Follow-up19
Third VaccineLost to Follow-up22

Baseline characteristics

CharacteristicGardasil9
Age, Continuous21.9 years
STANDARD_DEVIATION 2.8
Race/Ethnicity, Customized
Black
48 Participants
Race/Ethnicity, Customized
Hispanic/Latino
4 Participants
Race/Ethnicity, Customized
White
4 Participants
Sex/Gender, Customized
Female only
56 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 55
other
Total, other adverse events
1 / 55
serious
Total, serious adverse events
0 / 55

Outcome results

Primary

Patient Indication of Willingness to Accept the Vaccine Based on Survey

This was established using a survey to indicate willingness to receive vaccine.

Time frame: 1 day (at the time of initial recruitment /survey)

Population: 56 patients consented to vaccine.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Gardasil9Patient Indication of Willingness to Accept the Vaccine Based on Survey56 Participants
Secondary

Serum Titers of Vaccine-specific HPV Types

Immunogenicity

Time frame: baseline and 7 months

Population: This data was not collected

Secondary

Uptake of the Vaccine Doses

Those that actually received the vaccine and each time point.

Time frame: at 3 months

Population: 1 patient consented to vaccine and then withdrew

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Gardasil9Uptake of the Vaccine Doses36 Participants
Secondary

Uptake of the Vaccine Doses

Those that actually received the vaccine and each time point.

Time frame: at 6 months

Population: 36 patients received the 2nd vaccine dose

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Gardasil9Uptake of the Vaccine Doses14 Participants
Secondary

Uptake of the Vaccine Doses

Those that actually received the vaccine and each time point.

Time frame: at baseline

Population: 1 participant consented to vaccine and then subsequently withdrew

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Gardasil9Uptake of the Vaccine Doses55 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026