Medical technologies and the dream of the perfect newborn

Benefits and harms of antenatal and newborn screening programmes in health economic assessments: the VALENTIA systematic review and qualitative investigation

Background

Health economic assessments are used to determine whether the resources needed to generate net benefit from an antenatal or newborn screening programme, driven by multiple benefits and harms, are justifiable. It is not known what benefits and harms have been adopted by economic evaluations assessing these programmes and whether they omit benefits and harms considered important to relevant stakeholders.

Objectives

(1) To identify the benefits and harms adopted by health economic assessments in this area, and to assess how they have been measured and valued; (2) to identify attributes or relevance to stakeholders that ought to be considered in future economic assessments; and (3) to make recommendations about the benefits and harms that should be considered by these studies.

Design

Mixed methods combining systematic review and qualitative work.

Systematic review methods

We searched the published and grey literature from January 2000 to January 2021 using all major electronic databases. Economic evaluations of an antenatal or newborn screening programme in one or more Organisation for Economic Co-operation and Development countries were considered eligible. Reporting quality was assessed using the Consolidated Health Economic Evaluation Reporting Standards checklist. We identified benefits and harms using an integrative descriptive analysis and constructed a thematic framework.

Qualitative methods

We conducted a meta-ethnography of the existing literature on newborn screening experiences, a secondary analysis of existing individual interviews related to antenatal or newborn screening or living with screened-for conditions, and a thematic analysis of primary data collected with stakeholders about their experiences with screening.

Results

The literature searches identified 52,244 articles and reports, and 336 unique studies were included. Thematic framework resulted in seven themes: (1) diagnosis of screened for condition, (2) life-years and health status adjustments, (3) treatment, (4) long-term costs, (5) overdiagnosis, (6) pregnancy loss and (7) spillover effects on family members. Diagnosis of screened-for condition (115, 47.5%), life-years and health status adjustments (90, 37.2%) and treatment (88, 36.4%) accounted for most of the benefits and harms evaluating antenatal screening. The same themes accounted for most of the benefits and harms included in studies assessing newborn screening. Long-term costs, overdiagnosis and spillover effects tended to be ignored. The wide-reaching family implications of screening were considered important to stakeholders. We observed good overlap between the thematic framework and the qualitative evidence.

Limitations

Dual data extraction within the systematic literature review was not feasible due to the large number of studies included. It was difficult to recruit healthcare professionals in the stakeholder's interviews.

Conclusions

There is no consistency in the selection of benefits and harms used in health economic assessments in this area, suggesting that additional methods guidance is needed. Our proposed thematic framework can be used to guide the development of future health economic assessments evaluating antenatal and newborn screening programmes.

Study registration

This study is registered as PROSPERO CRD42020165236.

Funding

This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: NIHR127489) and is published in full in Health Technology Assessment; Vol. 28, No. 25. See the NIHR Funding and Awards website for further award information.

Absorbing it all: A meta-ethnography of parents' unfolding experiences of newborn screening

In a context of increasing international dialogue around the appropriate means and ends of newborn screening programmes, it is critical to explore the perspectives of those directly impacted by such screening. This meta-ethnography uses a systematic review process to identify qualitative studies that focus on parents' experiences of newborn screening published in English-language academic journals from 2000 to 2019 (n = 36). The included studies represent a range of moments, outcomes, and conditions that illuminate discrete elements of the newborn screening journey. We draw on these varied studies to construct a diagram of possible newborn screening pathways and through so-doing identify a critical window of time between the signalling of a positive newborn screen and the end of the screening process. During this critical window of time, families navigate complex emotional reactions, information, and decisions. From an in-depth analysis of this data, we develop the concept of "absorptive capacity" as a lens through which to understand parents' responses to new and emerging information. Alongside this, we identify how the "concertinaing of time" - the various ways that parents experience the expansion and compression of time throughout and beyond the screening pathway - affects their absorptive capacities. This study underscores the need to move away from viewing newborn screening as a discrete series of clinical events and instead understand it as a process that can have far-reaching implications across time, space, and family groups. Using this understanding of screening as a starting point, we make recommendations to facilitate communication and support for screened families, including the antenatal provision of information to parents and accommodations for the fluctuations in parents' absorptive capacities across the screening trajectory.

Coming to terms with the imperfectly normal child: attitudes of Israeli parents of screen-positive infants regarding subsequent prenatal diagnosis

This study examines the interface between newborn screening and prenatal diagnosis from the point-of-view of parents of screen-positive children. Many conditions covered by newborn screening represent classic (autosomal recessive) Mendelian disorders. Parents of screen-positive infants therefore often come to learn that they are carriers of the disease, and face a decision whether to test for it in future pregnancies. Semi-structured interviews were conducted in 2015-2017 with 34 Israeli parents whose child was screen positive. Three major themes emanated from the parents' attitudes toward prenatal testing for the disease in prospective hypothetical pregnancies: rejection of prenatal testing for the disease associated with the screen positive, and relying instead on newborn screening to reveal if a future baby is also sick (18/34, 53%); support of prenatal testing to get more information (7/34, 21%) and support of prenatal testing in order to abort in case of a test positive (9/34, 26%). We discuss the importance of newborn screening for reproductive decision-making, highlighting the arguments associated with positive and negative parental views of the possibility of having another child with the same condition associated with the screen-positive of the child that had already been born. The conclusions challenge the common assertion that parents pursue the dream of the "perfect child" through prenatal diagnosis that "naturally" leads to selective abortion. The diversity of views expressed by Israeli parents of screen-positive children highlights the diversity of normative scripts of "genetic responsibility" in the context of parenthood.

Resignifying the sickle cell gene: Narratives of genetic risk, impairment and repair

Connecting theoretical discussion with empirical qualitative work, this article examines how sickle cell became a site of public health intervention in terms of ‘racialised’ risks. Historically, sickle cell became socio-politically allied to ideas of repair, in terms of the state improving the health of a neglected ethnic minority population. Yet, we elucidate how partial improvements in care and education arose alongside preventative public health screening efforts. Using qualitative research based in the United Kingdom, we show how a focus on collective efforts of repair can lie in tension with how services and individuals understand and negotiate antenatal screening. We illustrate how screening for sickle cell disorder calls into question narrative identity, undoing paradigms in which ethnicity, disablement and genetic impairment become framed. Research participants noted that rather than ‘choices’, it is ‘risks’ and their negotiation that are a part of discourses of modernity and the new genetics. Furthermore, while biomedical paradigms are rationally and ethically (de)constructed by participants, this was never fully engaged with by professionals, contributing to overall perception of antenatal screening as disempowering and leading to disengagement.

Expressionists of the twenty-first century: the commodification and commercialization of expressed breast milk

Breast milk expression has been promoted as liberating for women and as offering them more choices, but there has been little research on women's experiences of it and even less critical commentary on the consequences of its incorporation into mainstream behavior. Drawing on narratives of women in the United Kingdom about breastfeeding, we explore the increasingly popular practice of expressing and feeding expressed breast milk. We argue that breast milk has become commodified, breastfeeding commercialized and technologized, and the mother-infant relationship disrupted. We suggest that breastfeeding as a process is being undermined by vested interests that portray it as unreliable and reconstruct it in artificial feeding terms, so playing on women's insecurities. The major beneficiaries of expression are fathers who want increased involvement in infant care and commercial enterprises that aim to maximize profits for shareholders.

Newborn screening for metabolic disorders: parental perceptions of the initial communication of results

Positive newborn screening (NBS) results cause significant parental distress, but little is known about how parents find out about children's screening results and what they are told. This qualitative, exploratory study reports on parents' perceptions of the initial communication of NBS results. Participants included the parents of 75 infants referred to a metabolic clinic in California over a 3-year period (2007-2010). Parents provided information about the initial communication of NBS results during audiotaped clinical encounters and open-ended interviews. Transcripts were analyzed inductively using thematic coding. Responses fell into 3 primary themes: sources of news delivery, providing information, and mitigation strategies. The findings suggest that health care providers have access to a range of communicative resources to buffer the impact of positive screening results that may be mobilized in future interventions. Recommendations for improving the communication process and future research directions are discussed.

Expanded newborn screening: articulating the ontology of diseases with bridging work in the clinic

Population screening follows the logic of secondary prevention: a population is screened to detect disease early and to initiate treatment before symptoms emerge. However, not all population screening is justifiable under all circumstances. In this article, we unpack Wilson and Jungner's requirement that knowledge about the natural history of a disease must be 'adequate' for screening to proceed. We argue that any prior understanding of disease is inevitably found to be insufficient once population screening is instituted. Drawing upon ethnographic observations of clinical consultations and staff meetings conducted in a California regional clinical centre for metabolic-genetic disorders, we introduce the notion of bridging work to draw attention to the collective activities of the genetics team to revise the ontological nature of conditions unsettled by population-based newborn screening. Bridging work refers to the many activities required to reconcile the promise of technologies with the realities of their implementation. We illustrate how clinicians bridge the gap between what was known about a disease prior to screening and anomalous screening results, leading to an ontological transformation of disease categories.

Newborn screening and maternal diagnosis: rethinking family benefit

In a significant departure from established criteria for population screening, a 2006 report by the American College of Medical Geneticists (ACMG) argued that newborn screening may be justified by family and societal benefits even if the screened infant does not stand to benefit. The ACMG report has since been the backdrop for considerable debate about the presumptive benefits of newborn screening. Understandings of family benefits have focused on how information provided by newborn screening may enhance reproductive decision-making, reduce the diagnostic odyssey, and alleviate the burden of raising a child with special health care needs. This paper identifies and describes an additional consequence of newborn screening for families. Specifically, we draw upon audio-recordings and clinical observations from a three-year ethnographic study of expanded newborn screening in California (November 2007-July 2010) to examine the potential for newborn screening to diagnose mothers with genetic disorders. This consequence of expanded newborn screening suggests the possibility of a different type of family spillover from that anticipated by the ACMG report. However, whether this knowledge benefits families depends on how the significance of genetic information is established in the clinic and the family's ability to act on this information. We show that the newborn screening health care infrastructure is not designed to provide treatment for adult patients, so the identification of maternal disease does not necessarily prove beneficial for families.