Development of a Hydroxyurea Decision Aid for Parents of Children With Sickle Cell Anemia

Sickle cell disease and infertility risks: implications for counseling and care of affected girls and women

INTRODUCTION

Sickle cell disease (SCD), its treatments and cures present infertility risks. Fertility counseling is broadly indicated for affected girls and women and fertility preservation may appeal to some. Several streams of evidence suggest that the reproductive lifespan of women with SCD is reduced. Pregnancy is associated with high miscarriage rates. There are enduring questions about the effects of highly effective hydroxyurea treatment on female fertility. Current conditioning regimens for gene therapy or hematopoietic stem cell transplant are gonadotoxic. Fertility preservation methods exist as non-experimental standards of care for girls and women. Clinicians are challenged to overcome multifactorial barriers to incorporate fertility counseling and fertility preservation care into routine SCD care.

AREAS COVERED

Here we provide a narrative review of existing evidence regarding fertility and infertility risks in girls and women with SCD and consider counseling implications of existing evidence.

EXPERT OPINION

Addressing fertility for girls and women with SCD requires engaging concerns that emerge across the lifespan, acknowledging uncertainty and identifying barriers to care, some of which may be insurmountable without public policy changes. The contemporary SCD care paradigm can offer transformative SCD treatments alongside comprehensive counselling that addresses fertility risks and fertility preservation opportunities.

Disease-modifying therapies for sickle cell disease: Decisional needs and supports among adolescents and young adults

BACKGROUND

Shared decision-making is one promising solution to addressing barriers in use of disease-modifying therapies for adolescents and young adults (AYAs) with sickle cell disease (SCD). A thorough understanding of decisional needs can guide the development of decisional supports and promote shared decision-making.

PROCEDURE

Informed by the Ottawa Decision Support Framework (ODSF), we conducted a qualitative analysis to assess decisional needs and supports reported by AYAs with SCD, their caregivers, and healthcare providers. Semi-structured qualitative interviews were conducted with AYAs and their caregivers, and online crowdsourcing was used with SCD providers. Thematic and descriptive content analyses were used to summarize perspectives on decisional needs and supports regarding disease-modifying therapies.

RESULTS

Fourteen AYAs (Mage  = 21 years, 57% male, 93% non-Hispanic Black, 79% HbSS), 11 caregivers (80% female, 100% non-Hispanic Black), and 40 healthcare providers (65% female, 65% non-Hispanic White, Myears in practice  = 14.8 years, 75% physicians) participated. Thematic analysis revealed needs related to: decisional conflict, inadequate knowledge, unclear expectations, and inadequate supports and resources. Six forms of support emerged as important for decision-making: establishing an open and trusting patient/family-provider relationship, providing information, accepting ambivalence and unreadiness, supporting implementation of a decision, addressing inadequate health and social services, and promoting adequate social, emotional, and instrumental help.

CONCLUSIONS

This is the first study to assess decisional needs and supports for AYAs with SCD considering disease-modifying therapies. Additional research is needed to examine which decision supports are the most impactful to promote effective shared decision-making in this population.

The evolving treatment landscape for children with sickle cell disease

Sickle cell disease is the most common inherited pathological haemoglobinopathy. Over the past 30 years, disease-related morbidity and mortality have improved in high-income countries due to advances in preventive care and treatments. Established disease-modifying therapies, such as hydroxyurea (hydrocarbamide), are continuing to have an important role in the treatment of sickle cell disease, and newer agents also show promise. In the past 5 years, the US Food and Drug Administration approved three additional sickle cell disease-modifying medications, and new gene therapies have been developed as an alternative curative treatment to haematopoietic stem-cell transplantation. In this Review, we discuss the current treatment landscape for paediatric sickle cell disease and emerging innovations in care. We also review the need for close, long-term management for children receiving newer therapies and the importance of ongoing investment in people with sickle cell disease in low-income and middle-income countries.

Using the consolidated framework for implementation research to identify recruitment barriers and targeted strategies for a shared decision-making randomized clinical trial in pediatric sickle cell disease

BACKGROUND/AIMS

Recruitment is often a barrier in clinical trials that include minoritized populations, such as individuals with sickle cell disease. In the United States, the majority of people with sickle cell disease identify as Black or African American. In sickle cell disease, 57% of the United States trials that ended early did so due to low enrollment. Thus, there is a need for interventions that improve trial enrollment in this population. After lower-than-expected recruitment during the first 6 months of the Engaging Parents of Children with Sickle Cell Anemia and their Providers in Shared-Decision-Making for Hydroxyurea trial, a multi-site study for young children with sickle cell disease, we collected data to understand barriers and used the Consolidated Framework for Implementation Research to categorize them and guide the development of targeted strategies.

METHODS

Study staff used screening logs and coordinator and principal investigator calls to identify recruitment barriers that were then mapped onto Consolidated Framework for Implementation Research constructs. Targeted strategies were implemented during Months 7-13. Recruitment and enrollment data were summarized before (Months 1-6) and during the implementation period (Months 7-13).

RESULTS

During the first 13 months, 60 caregivers (M = 30.65 years; SD = 6.35) enrolled in the trial. Most caregivers primarily self-identified as female (n = 54, 95%) and African American or Black (n = 51, 90%). Recruitment barriers mapped onto three Consolidated Framework for Implementation Research constructs: (1) Process barriers (i.e. no identified "site champion" and poor recruitment planning at several sites); (2) Inner setting barriers (i.e. limited communication, low relative study priority at several sites); and (3) Outer setting barriers (i.e. poor patient attendance at clinic appointments). Targeted strategies to improve recruitment included (1) principal investigator site visits and retraining on recruitment procedures to address process barriers; (2) increased frequency of communication through all coordinator, site principal investigator, and individual site calls to address inner setting barriers; and (3) development and implementation of no-show procedures for clinic appointments to address outer setting barriers. After implementation of the recruitment strategies, the number of caregivers identified for pre-screening increased from 54 to 164, and enrollment more than tripled from 14 to 46 caregiver participants.

CONCLUSION

Consolidated Framework for Implementation Research constructs guided the development of targeted strategies that increased enrollment. This reflective process reframes recruitment challenges as the responsibility of the research team rather than characterizing minoritized populations as "difficult" or "hard to reach." Future trials including patients with sickle cell disease and minoritized populations may benefit from this approach.

Psychologists as leaders in equitable science: Applications of antiracism and community participatory strategies in a pediatric behavioral medicine clinical trial

Psychologists have an ethical responsibility to advance health equity and can play a significant role in improving health care experiences for families racialized as Black, including those with sickle cell disease (SCD), a group of genetic blood disorders primarily affecting communities of color. Parents of children with SCD report experiences of stigma and discrimination due to racism in the health care system. The current commentary describes the application of antiracism and participatory strategies to the research design, implementation, and dissemination of a behavioral medicine clinical trial (Engage-HU; NCT03442114) of shared decision-making (SDM) for pediatric patients with SCD, including (a) the development of a research question to promote justice for racialized groups; (b) a focus on "redressing imbalances" through SDM and a multidisciplinary, inclusive research team led by a Black psychologist; (c) community participatory approaches through the integration of stakeholder feedback across the study; and (d) centering context by attending to structural realities in response to the COVID-19 and racism pandemics. With attention to the fact that most primary caregivers of children with SCD are Black women, an intersectionality lens was applied. Implications and considerations for psychologists working to advance health equity in medical settings are also discussed. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Practical Guidance for the Use of Voxelotor in the Management of Sickle Cell Disease

Sickle cell disease (SCD) is one of the most common inherited blood disorders. Deoxygenated hemoglobin S (HbS) polymerizes and causes anemia and various end organ effects. Voxelotor acts by increasing HbS oxygen affinity, decreasing anemia and hemolysis. Voxelotor is approved for use in individuals with SCD age 4 years and older. Phase 3 trials demonstrated an increase in hemoglobin levels and a decrease in markers of hemolysis; however, data or benefits related to clinical and quality of life outcomes are relatively limited and varied across different studies. This review summarizes the published clinical trials and research studies focused on the use of voxelotor in SCD to provide an evidence-based practical guide for hematology providers on its utilization in clinical settings, including physicians and independent licensed practitioners.

Barriers to hydroxyurea use from the perspectives of providers, individuals with sickle cell disease, and families: Report from a U.S. regional collaborative

Sickle cell disease (SCD) is an inherited blood disorder that affects about 100,000 people in the U.S., primarily Blacks/African-Americans. A multitude of complications negatively impacts quality of life. Hydroxyurea has been FDA approved since 1998 as a disease-modifying therapy for SCD, but is underutilized. Negative and uninformed perceptions of hydroxyurea and barriers to its use hinder adherence and promotion of the medication. As the largest real-world study to date that assessed hydroxyurea use for children and adults with SCD, we gathered and analyzed perspectives of providers, individuals with SCD, and families. Participants provided information about socio-demographics, hospital and emergency admissions for pain, number of severe pain episodes interfering with daily activities, medication adherence, and barriers to hydroxyurea. Providers reported on indications for hydroxyurea, reasons not prescribed, and current laboratory values. We found that hydroxyurea use was reported in over half of eligible patients from this large geographic region in the U.S., representing a range of sickle cell specialty clinical settings and practices. Provider and patient/caregiver reports about hydroxyurea use were consistent with one another; adults 26 years and older were least likely to be on hydroxyurea; and the likelihood of being on hydroxyurea decreased with one or more barriers. Using the intentional and unintentional medication nonadherence framework, we found that, even for patients on hydroxyurea, challenges to taking the medicine at the right time and forgetting were crucial unintentional barriers to adherence. Intentional barriers such as worry about side effects and “tried and it did not work” were important barriers for young adults and adults. For providers, diagnoses other than HgbSS or HgbS-β0 thalassemia were associated with lower odds of prescribing, consistent with evidence-based guidelines. Our results support strengthening provider understanding and confidence in implementing existing SCD guidelines, and the importance of shared decision making. Our findings can assist providers in understanding choices and decisions of families; guide individualized clinical discussions regarding hydroxyurea therapy; and help with developing tailored interventions to address barriers. Addressing barriers to hydroxyurea use can inform strategies to minimize similar barriers in the use of emerging and combination therapies for SCD.

An Immersive Virtual Reality Curriculum for Pediatric Hematology Clinicians on Shared Decision-making for Hydroxyurea in Sickle Cell Anemia

Although hydroxyurea (HU) is an effective treatment for sickle cell anemia, uptake remains low. Shared decision-making (SDM) is a recommended strategy for HU initiation to elicit family preferences; however, clinicians lack SDM training. We implemented an immersive virtual reality (VR) curriculum at 8 pediatric institutions to train clinicians on SDM that included counseling virtual patients. Clinicians' self-reported confidence significantly improved following the VR simulations on all communication skills assessed, including asking open-ended questions, eliciting specific concerns, and confirming understanding (Ps≤0.01 for all). VR may be an effective method for educating clinicians to engage in SDM for HU.

Engaging Caregivers and Providers of Children With Sickle Cell Anemia in Shared Decision Making for Hydroxyurea: Protocol for a Multicenter Randomized Controlled Trial

BACKGROUND

Sickle cell anemia (SCA) is a genetic blood disorder that puts children at a risk of serious medical complications, early morbidity and mortality, and high health care utilization. Until recently, hydroxyurea was the only disease-modifying treatment for this life-threatening disease and has remained the only option for children younger than 5 years. Evidence-based guidelines recommend using a shared decision-making (SDM) approach for offering hydroxyurea to children with SCA (HbSS or HbS/β0 thalassemia) aged as early as 9 months. However, the uptake remains suboptimal, likely because caregivers lack information about hydroxyurea and have concerns about its safety and potential long-term side effects. Moreover, clinicians do not routinely receive training or tools, especially those that provide medical evidence and consider caregivers' preferences and values, to facilitate a shared discussion with caregivers.

OBJECTIVE

The aim of this study is to understand how best to help parents of young children with sickle cell disease and their clinicians have a shared discussion about hydroxyurea (one that considers medical evidence and parent values and preferences).

METHODS

We designed our study to compare the effectiveness of two methods for disseminating hydroxyurea guidelines to facilitate SDM: a clinician pocket guide (ie, usual care) and a clinician hydroxyurea SDM toolkit (H-SDM toolkit). Our primary outcomes are caregiver reports of decisional uncertainty and knowledge of hydroxyurea. The study also assesses the number of children (aged 0-5 years) who were offered and prescribed hydroxyurea and the resultant health outcomes.

RESULTS

The Ethics Committee of the Cincinnati Children's Hospital Medical Center approved this study in November 2017. As of February 2021, we have enrolled 120 caregiver participants.

CONCLUSIONS

The long-term objective of this study is to improve the quality of care for children with SCA. Using multicomponent dissemination methods developed in partnership with key stakeholders and designed to address barriers to high-quality care, caregivers of patients with SCA can make informed and shared decisions about their health.

TRIAL REGISTRATION

ClinicalTrials.gov NCT03442114; https://clinicaltrials.gov/ct2/show/NCT03442114.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/27650.

Comparative Effectiveness of a Web-Based Patient Decision Aid for Therapeutic Options for Sickle Cell Disease: Randomized Controlled Trial

Background

Hydroxyurea, chronic blood transfusions, and bone marrow transplantation are efficacious, disease-modifying therapies for sickle cell disease but involve complex risk-benefit trade-offs and decisional dilemma compounded by the lack of comparative studies. A patient decision aid can inform patients about their treatment options, the associated risks and benefits, help them clarify their values, and allow them to participate in medical decision making.

Objective

The objective of this study was to develop a literacy-sensitive Web-based patient decision aid based on the Ottawa decision support framework, and through a randomized clinical trial estimate the effectiveness of the patient decision aid in improving patient knowledge and their involvement in decision making.

Methods

We conducted population decisional needs assessments in a nationwide sample of patients, caregivers, community advocates, policy makers, and health care providers using qualitative interviews to identify decisional conflict, knowledge and expectations, values, support and resources, decision types, timing, stages and learning, and personal clinical characteristics. Interview transcripts were coded using QSR NVivo 10. Alpha testing of the patient decision aid prototype was done to establish usability and the accuracy of the information it conveyed, and then was followed by iterative cycles of beta testing. We conducted a randomized clinical trial of adults and of caregivers of pediatric patients to evaluate the efficacy of the patient decision aid.

Results

In a decisional needs assessment, 223 stakeholders described their preferences, helping to guide the development of the patient decision aid, which then underwent alpha testing by 30 patients and 38 health care providers and iterative cycles of beta testing by 87 stakeholders. In a randomized clinical trial, 120 participants were assigned to either the patient decision aid or standard care (SC) arm. Qualitative interviews revealed high levels of usability, acceptability, and utility of the patient decision aid in education, values clarification, and preparation for decision making. On the acceptability survey, 72% (86/120) of participants rated the patient decision aid as good or excellent. Participants on the patient decision aid arm compared to the SC arm demonstrated a statistically significant improvement in decisional self-efficacy (P=.05) and a reduction in the informed sub-score of decisional conflict (P=.003) at 3 months, with an improvement in preparation for decision making (P<.001) at 6 months. However, there was no improvement in terms of the change in knowledge, the total or other domain scores of decisional conflicts, or decisional self-efficacies at 6 months. The large amount of missing data from survey completion limited our ability to draw conclusions about the effectiveness of the patient decision aid. The patient decision aid met 61 of 62 benchmarks of the international patient decision aid collaboration standards for content, development process, and efficacy.

Conclusions

We have developed a patient decision aid for sickle cell disease with extensive input from stakeholders and in a randomized clinical trial demonstrated its acceptability and utility in education and decision making. We were unable to demonstrate its effectiveness in improving patient knowledge and involvement in decision making.

Trial Registration

ClinicalTrials.gov NCT03224429; https://clinicaltrials.gov/ct2/show/NCT03224429 and ClinicalTrials.gov NCT02326597; https://clinicaltrials.gov/ct2/show/NCT02326597

The Role of Patient-Physician Communication on the Use of Hydroxyurea in Adult Patients with Sickle Cell Disease

OBJECTIVE

This qualitative study analyzed the perspective of patients living with sickle cell disease (SCD) on their process of deciding whether to take hydroxyurea (HU), and the role of physician communication in patients' decision-making process.

METHODS

From October 2015 to July 2016, we conducted semi-structured interviews among patients with SCD (N = 20) that were audio-recorded and transcribed. Participants were ≥ 18 years old, a patient of an urban adult sickle cell center, able to provide informed consent, and English-speaking. We iteratively developed codes and used thematic analysis to organize the key themes.

RESULTS

Most participants were female (65%), middle aged (M = 44, SD = 12.2), and 55% were prescribed HU for an average of 10.4 (SD = 4.7) years. Participants described 3 key factors that influenced their decision regarding HU treatment: (1) lifestyle, (2) health status, and (3) HU characteristics. Four themes emerged about provider communication and HU treatment decisions: (1) provider's advisement, (2) shared decision-making, (3) "wrestled," and (4) not feeling heard.

CONCLUSION

Providers who engaged in shared decision-making empowered participants to decide whether to start HU treatment. Participants who felt their providers were not listening to their concerns expressed disengaging from HU treatment. During discussions about HU with patients living with SCD, providers must understand the multi-faceted aspects that impact patients' decision and empower patients to engage in such discussions. Further research is needed to understand the role of shared decision-making among patients with SCD to improve management of SCD.

Decision-Making in Cleft-Related Surgery: A Qualitative Analysis of Patients and Caregivers

OBJECTIVE

Preference-sensitive surgical decisions merit shared decision-making, as decision engagement can reduce decisional conflict and regret. Elective cleft-related procedures are often preference sensitive, and therefore, we sought to better understand decision-making in this population.

DESIGN

Semistructured interviews were conducted to elicit qualitative data. A hierarchical codebook was developed through an iterative process in preparation for thematic analysis. Thematic analysis was performed to examine differences between patients and caregivers.

SETTING

Multidisciplinary cleft clinic at a tertiary care center.

PARTICIPANTS

Patients with cleft lip aged 8 and older (n = 31) and their caregivers (n = 31) were purposively sampled. Inability to converse in English, intellectual disability, or syndromic diagnoses resulted in exclusion.

MAIN OUTCOME MEASURES

Preferences surrounding surgical decision-making identified during thematic analysis.

RESULTS

Mean patient age was 12.7 (standard deviation: 3.1). Most had unilateral cleft lip and palate (43.8%). Three themes emerged: Insufficient Understanding of Facial Difference and Treatment, Diversity of Surgical Indications, and Barriers to Patient Autonomy. Almost half of caregivers believed their children understood their clefts, but most of these children failed to provide information about their cleft. Although many patients and caregivers acknowledged that surgery addressed function and/or appearance, patients and caregivers exhibited differences regarding the necessity of surgery. Furthermore, a large proportion of patients believed their opinions mattered in decisions, but less than half of caregivers agreed.

CONCLUSIONS

Patients with clefts desire to participate in surgical decisions but have limited understanding of their facial difference and surgical indications. Cleft surgeons must educate patients and facilitate shared decision-making.