Intent and subsequent initiation of human papillomavirus vaccine among young cancer survivors

Implementation barriers and considerations for recommending and administering the human papillomavirus (HPV) vaccination in oncology settings

BACKGROUND

Survivors of childhood and adolescent cancer experience low human papillomavirus (HPV) vaccination rates-a crucial form of cancer prevention. Oncology provider recommendations may increase young survivors HPV vaccine intent, but HPV vaccination is not typically provided in the oncology setting. Thus, we explored the implementation barriers of providing the HPV vaccine in oncology.

METHODS

We interviewed oncology providers in a variety of specialty areas about their perceptions of the HPV vaccine and to explore barriers to recommending and administering the vaccine in their clinics. Interviews were audio recorded, quality checked, and thematically analyzed. Emergent themes were then mapped onto the Capability, Opportunity, Motivation, and Behavior (COM-B) Model and the Theoretical Domains Framework.

RESULTS

A total of N=24 oncology providers were interviewed. Most provided direct clinical care (87.5%) and most commonly specialized in pediatric oncology (20.8%), medical oncology (16.7%), bone marrow transplant (16.7%), and nurse coordination (16.7%). Two themes emerged within each COM-B domain. Capability: 1) educational barriers to HPV vaccination and 2) complicated post treatment HPV vaccination guidelines.

MOTIVATION

1) perceived importance of HPV vaccine and 2) concern about blurred scope of practice.

OPPORTUNITY

 1) hospital administration and time concern barriers and 2) clinical workflow integration concerns.

CONCLUSION

Implementing HPV vaccination in the oncology setting has the potential to increase HPV vaccination rates among young survivors. Multi-level barriers to providing the HPV vaccine in the oncology setting were identified by participants. Leveraging existing implementation strategies may be an effective way to mitigate provider identified barriers and increase vaccination rates.

Vaccination uptake among post-treatment cancer survivors: A multi-vaccine scoping review

BACKGROUND

Our goal was to provide an overview of uptake rates across vaccine types and factors associated with vaccine uptake among cancer survivor populations.

METHODS

A literature search was conducted using Ovid MEDLINE® ALL (Wolters Kluwer), Embase (Elsevier) and CINAHL Complete (EBSCO) databases and according to PRISMA guidelines. Eligible articles were limited to those examining vaccination uptake among cancer survivors who had completed treatment, reported factors associated with uptake (e.g., barriers and facilitators), and published in English between 2011 and 2021. Two independent reviewers screened citations for inclusion and two performed data abstraction, verified by an arbiter.

RESULTS

The search returned 4,215 total articles, and 271 duplicates were removed. During abstract/title screening, 212 articles were identified. Following full-text screening, 47 articles/abstracts were found to meet inclusion criteria, 16 articles/abstracts were removed, and 31 studies were included in the review. Among the 31 studies, participant age ranged from 9 years to adults of all ages. Vaccine types included: influenza (n = 18), human papillomavirus (n = 10), pneumococcal (n = 8), hepatitis A/B (n = 1), shingles (n = 1), measles (n = 1), tetanus/diphtheria (n = 1), and haemophilus influenza B (n = 1). Vaccine uptake varied greatly across studies, vaccine types, and participant populations. Factors affecting vaccination uptake included sociodemographic variables and social determinants of health, health beliefs/attitudes/knowledge, provider recommendation, and cancer treatment/clinical variables.

CONCLUSIONS

Our findings highlight the need for further examining factors associated with vaccine uptake, the need for clinical guidelines that specifically address vaccination among cancer survivors, and potential targets for multi-level interventions to improve vaccination rates among cancer survivor populations.

Examining the Barriers and Opportunities for Human Papillomavirus Vaccine Delivery in Cancer Care Settings: A Mixed-Methods Study

Although pediatric, adolescent, and young adult (PAYA) cancer survivors are at increased risks for secondary cancers, their HPV vaccine uptake rates are poor. Therefore, we conducted a mixed-methods study to identify the barriers and opportunities for HPV vaccine delivery among PAYA cancer care providers. We distributed a semistructured questionnaire to a professional organization comprised of PAYA oncology and hematology healthcare providers between April and July 2022. Questionnaire measures included demographic and practice characteristics, HPV vaccine knowledge, willingness, barriers, opportunities, and roles for HPV vaccine delivery. Descriptive characteristics were generated for quantitative data, and content analysis was used to identify themes. A total of 49 providers responded to our survey. A majority were female (68%) and non-Hispanic white (74%). Approximately 76% were oncology or hematology physicians, and most worked in a cancer center or children's hospital (86%). Over half (63%) had been practicing for >15 years, and a majority saw patients ages 11 to 17. Although less than half reported discussing HPV vaccination with their patients, 69% were willing to become involved in HPV vaccine delivery. The most frequently reported barriers identified in our content analysis were related to system-level factors. Furthermore, providers identified opportunities within cancer prevention education, transitions in care, and at the system-level. Although barriers to HPV vaccination persist in cancer care, most providers perceived there to be opportunities to become involved in HPV vaccine delivery. Identifying strategies for PAYA oncology and hematology healthcare providers to adopt a stronger role in HPV vaccination remains a significant opportunity for future implementation research.

PREVENTION RELEVANCE

This mixed-methods study is the first to investigate and assess barriers and opportunities for HPV vaccine delivery among PAYA cancer healthcare providers. Our findings can serve as an important framework for future implementation research targeted towards HPV vaccine delivery in cancer clinical settings. See related Spotlight, p. 545.

Human papillomavirus vaccination uptake among childhood cancer survivors in Western New York

INTRODUCTION

The risk of human papillomavirus (HPV)-associated cancers is significantly higher among survivors of a childhood cancer compared to the general population. Despite this, their HPV vaccine uptake rates are lower. We examined factors related to HPV vaccine uptake among childhood cancer survivors from Western New York over 13 years following the introduction of HPV vaccines.

METHODS

Retrospective review of patients diagnosed with invasive or noninvasive cancerous conditions at age 9 or younger treated at Roswell Park Oishei Children's Cancer and Blood Disorder Program. We matched vaccine date information for patients aged 9-26 years between 2006 and 2020 from the New York State Immunization Information System. Demographic and cancer-related information was abstracted from electronic medical records. Cumulative vaccine uptake was assessed by Kaplan-Meier and Cox proportional hazards regression models.

RESULTS

A total of 284 patients were included in the analyses. Most were non-Hispanic/White (80.3%) and resided in a metropolitan area (81.7%). Approximately half had leukemia or lymphoma (54.9%), and most received chemotherapy. Females were more likely to initiate the HPV vaccine and did so sooner (median = 5.5 years) than males (median = 5.7 years; log-rank p = .301). Patients who were older at vaccine eligibility and males who received blood product transfusions were significantly less likely to initiate the HPV vaccine.

CONCLUSION

While rates of HPV vaccine initiation have been increasing with time among childhood cancer survivors, they remain low overall, with differences seen by treatment and diagnosis. Our findings support the need for further research to optimize HPV vaccine delivery in cancer care.

HPV vaccination coverage for pediatric, adolescent and young adult patients receiving care in a childhood cancer survivor program

Pediatric, adolescent and young adult patients undergoing cancer treatment and/or hematopoietic stem cell transplant are at increased risk for developing a secondary human papillomavirus (HPV)-associated malignancy. The objective of this study was to determine HPV vaccination coverage among individuals participating in a childhood cancer survivor program (CCSP). A retrospective cohort study was conducted among CCSP patients age 11–26 years attending a CCSP visit between 2014 and 2019. Survivors were age-, sex-, and race-matched 1:2 with controls without cancer. Data were abstracted from the electronic health record and state-based vaccination registry. Analysis was limited to Minnesota residents to minimize missing vaccination data. Survivorship care plans (SCPs) were reviewed for vaccine recommendations.

592 patients were included in the analyses (200 CCSP patients; 392 controls). By study design, mean age (18.4 years), race (72 % white), and sex (49 % female) were similar in the two groups. Among CCSP patients 22 % resided in a rural area compared to 3.8 % of controls. Vaccination coverage among CCSP patients was not statistically significantly different from controls [60.0 % vs 66.3 %, OR = 0.82, 95 % CI: (0.55, 1.23), p = 0.35]. Completion of 3 doses was not different between groups even though 3 doses is recommended for all CCSP patients regardless of age at initiation (28.5 % vs 30.1 %, p = 0.09). Only 8.0 % of SCPs recommended HPV vaccination.

Although patients participating in a CCSP did not have significantly different HPV vaccination coverage compared to controls, HPV vaccination initiation and 3-dose series completion are still suboptimal in a patient population at high-risk of a secondary HPV-associated cancer.

Subsequent primary cancer risk among five-year survivors of adolescent and young adult cancers

BACKGROUND

A comprehensive examination of the incidence and mortality of subsequent primary cancers (SPCs) among adolescent and young adult (AYA) cancer survivors in the US is lacking.

METHODS

Cancer incidence and mortality among 170,404 ≥ 5-year cancer survivors aged 15-39 years at first primary cancer diagnosis during 1975-2013 in 9 Surveillance, Epidemiology, and End Results registries were compared to those in the general population using standardized incidence ratio (SIR), absolute excess incidence (AEI), standardized mortality ratio (SMR), and absolute excess mortality (AEM).

RESULTS

During a mean follow-up of 14.6 years, 13,420 SPC cases and 5,008 SPC deaths occurred among survivors (excluding the same-site as index cancer), corresponding to 25% higher incidence (95%CI = 1.23-1.27; AEI = 10.8 per 10,000) and 84% higher mortality (95%CI = 1.79-1.89; AEM = 9.2 per 10,000) than that in the general population. Overall SPC risk was statistically significantly higher for 20 of 29 index cancers for incidence and 26 for mortality, with the highest SIR among female Hodgkin lymphoma survivors (SIR = 3.05, 95%CI = 2.88-3.24; AEI = 73.0 per 10,000) and the highest SMR among small intestine cancer survivors (SMR = 6.97, 95%CI = 4.80-9.79; AEM = 64.1 per 10,000). Type-specific SPC risks varied substantially by index cancers; however, SPCs of the female breast, lung, and colorectum combined constituted 36% of all SPC cases and 39% of all SPC deaths, with lung cancer alone representing 11% and 24% of all cases and deaths, respectively.

CONCLUSION

AYA cancer survivors are almost twice as likely to die from a new primary cancer as the general population, highlighting the need for primary care clinicians to prioritize cancer prevention and targeted surveillance strategies in these individuals.

Human papillomavirus (HPV) vaccination is cancer prevention for childhood cancer survivors

Childhood cancer survivors are at high risk for developing human papillomavirus (HPV)-associated subsequent neoplasms. Henderson et al., 2021 identified risk factors for subsequent HPV-associated malignant neoplasms among enrollees in the Childhood Cancer Survivor Study. The exacerbated risk of subsequent HPV cancers found in the study underscores the need for more stringent surveillance and tracking to inform intervention approaches to ensure maximal protection. In addition, HPV vaccination must be prioritized as part of transitional care and survivorship planning. Limited sources of data on survivor practices and outcomes results in limited information to develop guidelines and provide childhood cancer survivors with information on preventing subsequent HPV cancers. Improved efforts are needed to increase HPV vaccination and HPV-related surveillance among childhood cancer survivors to prevent subsequent neoplasms.

Childhood cancer survivors are at increased risk of developing a subsequent cancer caused by human papillomavirus or HPV. HPV is a very common and usually benign sexually transmitted infection. HPV vaccination and screening can prevent most HPV cancers. However, childhood cancer survivors have lower HPV vaccination rates than individuals without a cancer history. To help prevent subsequent HPV cancers among childhood cancer survivors, we must gather better information and work to improve HPV vaccination recommendations and acceptance.

Childhood cancer survivors are at high risk for developing subsequent human papillomavirus (HPV)-associated cancers; Henderson et al., 2021, examined risk factors for subsequent malignant neoplasms associated with HPV among enrollees in the Childhood Cancer Survivor Study. Improved, targeted efforts to increase HPV vaccination and HPV-related surveillance among childhood cancer survivors are needed.

Provider-Level Barriers to Human Papillomavirus Vaccination in Survivors of Childhood and Young Adult Cancers

Purpose: We sought to understand clinician-level barriers to providing HPV vaccination to survivors of childhood and young adult cancers (CYACs). Methods: We conducted 30-minute qualitative interviews with primary care and specialty clinicians who care for survivors of CYACs at our academic medical center. Blinded reviewers analyzed transcripts and used an inductive approach to identify barriers to vaccination in this population. Results: We conducted 24 interviews (n = 11 primary care clinicians, n = 13 oncology clinicians). Thematic analysis revealed that primary care clinicians are universally viewed as holding ultimate responsibility for human papillomavirus (HPV) vaccination among survivors of CYACs. Both primary care and oncology clinicians believed vague, inconsistent HPV guidelines engendered uncertainty toward HPV vaccination's role and timing following completion of CYAC therapies. As such, compared with other vaccines, the HPV vaccination is not as consistently offered to survivors. Respondents identified direct guidance from oncologists to primary care clinicians and to patients as a potential strategy for improving HPV vaccination rates in this population. Finally, oncology clinicians frequently deprioritize the issue of preventing second, noniatrogenic cancers and consequently miss opportunities to discuss vaccination's merits with their patients. Conclusions: Despite not holding ultimate responsibility for vaccination, oncology clinicians have an opportunity to play an important role in ensuring access and overcoming hesitancy among survivors of CYACs. Developing clearer and more collaborative guidelines, helping to integrate vaccination into institutional electronic health record protocols, offering direct guidance to primary care colleagues, and participating in conversations with survivors of CYACs may help improve vaccination rates.

Provider communication and HPV vaccine uptake: A meta-analysis and systematic review

Provider communication can be critically important to families as they consider HPV vaccination. We sought to characterize the association of provider communication and HPV vaccine uptake, and when communication better motivates vaccination. We searched four databases for studies published between 2006 and 2019. Eligible studies examined health care provider communication (defined as recommendation or discussion) and HPV vaccine uptake (defined as initiation, completion, or follow-through) in the US. Two coders independently identified eligible studies and coded effect sizes and study characteristics. We pooled effect sizes using random-effects meta-analysis. We identified 59 eligible studies of 265,083 patients. Receiving a provider recommendation was associated with higher HPV vaccine initiation (pooled OR = 10.1, 95% CI: 7.6-13.4). HPV vaccine initiation was 24% for patients without and 60% for patients with a provider recommendation. The pooled effect size for provider recommendation and initiation was smaller for probability samples, clinical records, and NIS-Teen (all p < 0.002). Recommendations were equally effective for males and females, for different patient ages, and over time. Provider recommendation was also associated with higher HPV vaccine series completion and follow-through. Provider discussion was similarly associated with higher HPV vaccine initiation (OR = 12.4, 95% CI: 6.3-24.3). In summary, provider communication was robustly associated with HPV vaccination initiation, completion, and follow-through. These findings suggest that US public health efforts to increase HPV vaccine coverage should continue to emphasize provider communication.

Emerging and Ongoing Survivorship Challenges Among Childhood Cancer Survivors and Providing Risk-Based Focused Follow-Up Care

OBJECTIVES

To provide a summary of the emerging and ongoing survivorship challenges facing childhood, adolescent, and young adult cancer survivors and their families.

DATA SOURCES

Research and review articles, websites, and clinical guidelines specific to childhood cancer survivorship were used.

CONCLUSION

Many challenges exist in assuring quality long-term follow-up and risk-based screening for childhood cancer survivors. Although many childhood cancer survivors survive well into adulthood, they are at risk for a vast number of later complications of their cancer treatment necessitating annual cancer surveillance. In addition, many childhood cancer survivors are not engaging in long-term follow-up recommendations for clinic attendance, risk-based surveillance, and screening for potentially life-ending events. Pediatric oncology nurses and advanced practice nurses have played an enormous role in the design of childhood cancer survivorship programs and are an integral member of the multidisciplinary health care team who care for this population. Nurses have an obligation to continue to advance the survivorship care of childhood cancer survivors and lead interventional opportunities to improve the lifelong health-related quality of life and overall physical health.

IMPLICATIONS FOR NURSING PRACTICE

Pediatric oncology nurses and advanced practice registered nurses must have a working knowledge of the many late effects that childhood cancer treatment has on the long-term health of childhood cancer survivors. Nurses are well-placed in positions to continue the efforts begun more than 2 decades prior by pediatric oncology nurses who saw the value and necessity of designated survivorship programs.