1
|
Koto Y, Ueki S, Yamakawa M, Sakai N. Experiences of patients with metachromatic leukodystrophy, adrenoleukodystrophy, or Krabbe disease and the experiences of their family members: a qualitative systematic review. JBI Evid Synth 2024; 22:1262-1302. [PMID: 38533650 PMCID: PMC11230659 DOI: 10.11124/jbies-23-00303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
OBJECTIVE This review aimed to synthesize the experiences of patients with metachromatic leukodystrophy, adrenoleukodystrophy, or Krabbe disease and the experiences of their families. INTRODUCTION Leukodystrophies are metabolic diseases caused by genetic mutations. There are multiple forms of the disease, varying in age of onset and symptoms. The progression of leukodystrophies worsens central nervous system symptoms and significantly affects the lives of patients and their families. INCLUSION CRITERIA Qualitative studies on the experiences of patients with leukodystrophies and their family members were included. These experiences included treatments such as enzyme replacement therapy and hematopoietic stem cell transplantation; effects of tracheostomy and gastrostomy; burdens on the family, coordinating care within the health care system, and family planning due to genetic disorders. This review considered studies in any setting. METHODS MEDLINE (Ovid), CINAHL Plus (EBSCOhost), APA PsycINFO (EBSCOhost), Scopus, and MedNar databases were searched on November 18, 2022. Study selection, critical appraisal, data extraction, and data synthesis were conducted in accordance with the JBI methodology for systematic reviews of qualitative evidence, and synthesized findings were evaluated according to the ConQual approach. RESULTS Eleven studies were eligible for synthesis, and 45 findings were extracted corresponding with participants' voices. Of these findings, 40 were unequivocal and 5 were credible. The diseases in the included studies were metachromatic leukodystrophy and adrenoleukodystrophy; no studies were identified for patients with Krabbe disease and their families. These findings were grouped into 11 categories and integrated into 3 synthesized findings, including i) providing care by family members and health care providers as physical symptoms progress, which relates to the effects of the characteristics of progressive leukodystrophies; ii) building medical teamwork to provide appropriate support services, comprising categories related to the challenges experienced with the health care system for patients with leukodystrophy and their families; and iii) coordinating family functions to accept and cope with the disease, which included categories related to family psychological difficulties and role divisions within the family. According to the ConQual criteria, the second synthesized finding had a low confidence level, and the first and third synthesized findings had a very low confidence level. CONCLUSIONS The synthesized findings of this review provide evidence on the experiences of patients with metachromatic leukodystrophy or adrenoleukodystrophy and their families. These findings indicate that there are challenges in managing a patient's physical condition and coordinating the health care system and family functions. REVIEW REGISTRATION PROSPERO CRD42022318805. SUPPLEMENTAL DIGITAL CONTENT A Japanese-language version of the abstract of this review is available [ http://links.lww.com/SRX/A49 ].
Collapse
Affiliation(s)
- Yuta Koto
- Faculty of Nursing, Graduate School of Nursing, Kansai Medical University, Osaka, Japan
- The Japan Centre for Evidence Based Practice: A JBI Centre of Excellence, Osaka, Japan
| | - Shingo Ueki
- The Japan Centre for Evidence Based Practice: A JBI Centre of Excellence, Osaka, Japan
- Faculty of Medical Sciences, Department of Health Sciences, Kyushu University, Fukuoka, Japan
| | - Miyae Yamakawa
- The Japan Centre for Evidence Based Practice: A JBI Centre of Excellence, Osaka, Japan
- Department of Evidence-Based Clinical Nursing, Division of Health Sciences, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Norio Sakai
- Child Healthcare and Genetic Science Laboratory, Division of Health Science, Osaka University Graduate School of Medicine, Osaka, Japan
| |
Collapse
|
2
|
Rivero-Arias O, Png ME, White A, Yang M, Taylor-Phillips S, Hinton L, Boardman F, McNiven A, Fisher J, Thilaganathan B, Oddie S, Slowther AM, Ratushnyak S, Roberts N, Shilton Osborne J, Petrou S. Benefits and harms of antenatal and newborn screening programmes in health economic assessments: the VALENTIA systematic review and qualitative investigation. Health Technol Assess 2024; 28:1-180. [PMID: 38938110 PMCID: PMC11228689 DOI: 10.3310/pytk6591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024] Open
Abstract
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.
Collapse
Affiliation(s)
- Oliver Rivero-Arias
- National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - May Ee Png
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Ashley White
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Miaoqing Yang
- National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | | | - Lisa Hinton
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
- THIS Institute, University of Cambridge, Cambridge, UK
| | | | - Abigail McNiven
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | | | | | - Sam Oddie
- Bradford Institute for Health Research, Bradford Children's Research, Bradford, UK
| | | | - Svetlana Ratushnyak
- National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Nia Roberts
- Bodleian Health Care Libraries, University of Oxford, Oxford, UK
| | - Jenny Shilton Osborne
- National Perinatal Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Stavros Petrou
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| |
Collapse
|
3
|
Tang C, Tang F, Cai Y, Tan M, Liu S, Xie T, Jiang X, Huang Y. A pilot study of newborn screening for X-linked adrenoleukodystrophy based on liquid chromatography-tandem mass spectrometry method for detection of C26:0-lysophosphatidylcholine in dried blood spots: Results from 43,653 newborns in a southern Chinese population. Clin Chim Acta 2024; 552:117653. [PMID: 37977233 DOI: 10.1016/j.cca.2023.117653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND X-linked adrenoleukodystrophy (X-ALD) is a rare X-linked disease caused by mutations of the ABCD1 gene. C26:0-lysophosphatidylcholine (C26:0-LPC) has been proved to be an accurate biomarker for X-ALD. This study aims to propose an effective method for screening of X-ALD and to evaluate the performance of the newborn screening (NBS) assay for X-ALD in Guangzhou. METHODS C26:0-LPC in dried blood spots (DBS) was extracted by methanol solution containing isotope-labelled internal standard (C26:0-d4-LPC) and analyzed using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The sensitivity of the method was assessed in eight male X-ALD patients, two female carriers and 583 healthy controls. The method was conducted on 43,653 newborns. Next generation sequencing was performed on screen-positive samples. Plasma analysis of very long-chain fatty acids and genetic counselling were performed by way of follow-up. RESULTS Elevated C26:0-LPC were 100% sensitive for screening of X-ALD. Of 43,653 newborns, 32 (18 males, 14 females) screened positive. Of these, 14 (43.7%) were identified ABCD1 variants, including seven hemizygous males and seven heterozygous females, and two (6.3%) were diagnosed with other peroxisomal disorders. CONCLUSION The LC-MS/MS method for screening of X-ALD can identify males, heterozygous females and other peroxisomal disorders. The incidence of X-ALD in Guangzhou is not low.
Collapse
Affiliation(s)
- Chengfang Tang
- Guangzhou Newborn Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, Guangdong, China
| | - Fang Tang
- Guangzhou Newborn Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, Guangdong, China
| | - Yanna Cai
- Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, Guangdong, China
| | - Minyi Tan
- Guangzhou Newborn Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, Guangdong, China
| | - Sichi Liu
- Guangzhou Newborn Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, Guangdong, China
| | - Ting Xie
- Guangzhou Newborn Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, Guangdong, China
| | - Xiang Jiang
- Guangzhou Newborn Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, Guangdong, China
| | - Yonglan Huang
- Guangzhou Newborn Screening Center, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, Guangdong, China.
| |
Collapse
|
4
|
Piercy H, Nutting C. The experiences of parents of children diagnosed with cerebral adrenoleukodystrophy. Child Care Health Dev 2024; 50:e13184. [PMID: 37850425 DOI: 10.1111/cch.13184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 10/02/2023] [Accepted: 10/04/2023] [Indexed: 10/19/2023]
Abstract
BACKGROUND Adrenoleukodystrophy (ALD) is a rare X-linked neurodegenerative disease, affecting the brain, spinal cord and adrenal cortex. Childhood cerebral ALD (CCALD) is the most severe form of disease, involving rapidly progressive neurological deterioration. The treatment option for CCALD is allogenic haemopoietic stem cell transplant, which is only successful for early-stage disease. Parents' experiences of CCALD can inform healthcare delivery. STUDY AIM To detail the experiences of parents of children diagnosed with cerebral ALD. METHODS A descriptive qualitative study. Parents were recruited via a UK-based community support organisation. Data collection involved single semi-structured interviews structured around a topic guide and conducted remotely. Data were analysed using the thematic analysis approach. FINDINGS Twelve parents from 11 families with a total of 16 children with ALD contributed to the study. Their 16 children with ALD followed one of three disease pathways, determined by the extent of neurological damage at diagnosis. Three themes, and their respective sub themes, describe the pathways and what they meant for parents. 'No possibility of treatment' concerns situations when CCALD was diagnosed at an advanced stage, the landslide of deterioration parents witnessed and their efforts to maintain normality. 'Close to the treatment threshold' describes situations where a small treatment window required parents to make agonising treatment decisions. 'Watching and waiting' explains the challenges for parents when disease was detected early enabling children to benefit from timely treatment. DISCUSSION Parents' experiences were largely defined by the extent of cerebral damage at diagnosis, which determined the availability and success of treatment. There were specific challenges related to the three situations, indicating areas where support from health and care services may help parents deal with this devastating diagnosis. CONCLUSION This study indicates support needs of parents across the spectrum of CCALD diagnoses and highlights the critical importance of early diagnosis.
Collapse
Affiliation(s)
- Hilary Piercy
- Health Research Institute, Sheffield Hallam University, Sheffield, UK
| | - Charlotte Nutting
- Health Research Institute, Sheffield Hallam University, Sheffield, UK
| |
Collapse
|
5
|
Videbæk C, Melgaard L, Lund AM, Grønborg SW. Newborn screening for adrenoleukodystrophy: International experiences and challenges. Mol Genet Metab 2023; 140:107734. [PMID: 37979237 DOI: 10.1016/j.ymgme.2023.107734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/20/2023]
Abstract
X-linked adrenoleukodystrophy (XALD) is the most common leukodystrophy. It has an estimated incidence of around 1/17.000, and a variable phenotype. Following the passage of Aidens Law, New York became the first state to implement a newborn screening for XALD in 2013. Since then, 38 American states, Taiwan, and the Netherlands have included XALD in their NBS program, and Japan and Italy have ongoing pilot studies. Screening for XALD allows for early, potentially lifesaving treatment of adrenal insufficiency and cerebral demyelination but is also a complex subject, due to our limited understanding of the natural history and lack of prognostic biomarkers. Screening protocols and algorithms vary between countries and states, and results and experiences gained so far are important for the future implementation of XALD NBS in other countries. In this review, we have examined the algorithms, methodologies, and outcomes used, as well as how common challenges are addressed in countries/states that have experience using NBS for XALD. We identified 14 peer-reviewed reports on NBS for XALD. All studies presented methods for detecting XALD at birth by NBS using a combination of mass spectrometry and ABCD1 gene sequencing. This has allowed for early surveillance of presymptomatic XALD patients, and the possibility for early detection and timely treatment of XALD manifestations. Obstacles to NBS for XALD include how to deal with variants of unknown significance, whether to screen females, and the ethical concerns of an NBS for a disease where we have limited understanding of natural history and phenotype/genotype correlation.
Collapse
Affiliation(s)
- Cecilie Videbæk
- Centre for Inherited Metabolic Diseases, Departments of Clinical Genetics and Paediatrics, Copenhagen University Hospital, Rigshospitalet, Denmark.
| | - Lars Melgaard
- Danish Center for Neonatal Screening, Clinical Mass Spectrometry, Statens Serum Institut, Denmark
| | - Allan M Lund
- Centre for Inherited Metabolic Diseases, Departments of Clinical Genetics and Paediatrics, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Sabine Weller Grønborg
- Centre for Inherited Metabolic Diseases, Departments of Clinical Genetics and Paediatrics, Copenhagen University Hospital, Rigshospitalet, Denmark
| |
Collapse
|
6
|
Kadiroğlu T, Altay G, Akay G, Can Bayrak Ç. Identification of maternal attitudes and knowledge about newborn screenings: a Turkey sample. J Community Genet 2023; 14:555-564. [PMID: 37535305 PMCID: PMC10725403 DOI: 10.1007/s12687-023-00659-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 07/06/2023] [Indexed: 08/04/2023] Open
Abstract
This study was planned to determine maternal attitudes and knowledge about newborn screening. The universe of the descriptive study consisted of postpartum mothers living in the centers of three provinces in the north and east of Turkey. The sample included mothers who were older than 18 years of age, who could read and write Turkish, whose babies were in the 24th and 72nd hour after birth, and who volunteered to take part in the study. The study was completed with 407 mothers. The data were collected with the face-to-face interview method by the researchers using the "Descriptive Information Form" and the "Maternal Attitudes and Knowledge Survey about Newborn Screening." The results showed that 40.3% of the mothers were between the ages of 25 and 30 years, 52.8% received information about newborn screening, 61.1% received this information during pregnancy (27.3% in the first trimester and 33.8% in the last trimester), and most of the information was provided by a healthcare professional (77.8%). Mothers with only one child (p = .001) and those with nuclear families (p = .024) were found to have lower maternal attitudes and knowledge about newborn screening. The study showed that the level of knowledge of Turkish mothers about newborn screening is inadequate in general. In particular, the knowledge and attitudes of mothers with nuclear families, those with one child, and those not having regular check-ups during pregnancy are inadequate. Improving mothers' understanding of screening tests will lead to more successful screening program implementation and earlier detection and care of newborns with a disease.
Collapse
Affiliation(s)
| | - Gamzegül Altay
- Faculty of Health Sciences, Recep Tayyip Erdogan University, Rize, Turkey.
| | - Gamze Akay
- Vocational School of Health Services, Artvin Coruh University, Artvin, Turkey
| | | |
Collapse
|
7
|
Ramirez Alcantara J, Grant NR, Sethuram S, Nagy A, Becker C, Sahai I, Stanley T, Halper A, Eichler FS. Early Detection of Adrenal Insufficiency: The Impact of Newborn Screening for Adrenoleukodystrophy. J Clin Endocrinol Metab 2023; 108:e1306-e1315. [PMID: 37220095 PMCID: PMC11009790 DOI: 10.1210/clinem/dgad286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/16/2023] [Accepted: 05/17/2023] [Indexed: 05/25/2023]
Abstract
CONTEXT Males with adrenoleukodystrophy (ALD) have an 80% lifetime risk of developing adrenal insufficiency (AI), which can be life-threatening when undetected. Newborn screening (NBS) for ALD has been implemented in 29 states, yet the impact of NBS upon clinical management has not been reported. OBJECTIVE To investigate whether the implementation of NBS has altered the time to diagnosis of AI in children with ALD. DESIGN We conducted a retrospective medical chart review of pediatric patients with ALD. SETTING All patients were seen in a leukodystrophy clinic in an academic medical center. PATIENTS We included all pediatric patients with ALD who were seen between May 2006 and January 2022. We identified 116 patients (94% boys). MAIN OUTCOME MEASURES We extracted information about ALD diagnosis in all patients and AI surveillance, diagnosis, and treatment in boys with ALD. RESULTS Thirty-one (27%) patients were diagnosed with ALD by NBS, and 85 (73%) were diagnosed outside the newborn period. The prevalence of AI among boys in our patient population was 74%. AI diagnosis was made significantly earlier in boys diagnosed with ALD by NBS than in boys diagnosed outside the newborn period (median [IQR] age of diagnosis = 6.7 [3.9, 12.12] months vs 6.05 [3.74, 8.35] years) (P < .001). When maintenance dose of glucocorticoids were initiated, there were significant differences in ACTH and peak cortisol levels in patients diagnosed by NBS and outside the newborn period. CONCLUSIONS Our results suggest that implementing NBS for ALD leads to significantly earlier detection of AI and earlier initiation of glucocorticoid supplementation in boys affected by ALD.
Collapse
Affiliation(s)
- Jonanlis Ramirez Alcantara
- Department of Pediatric Endocrinology, Massachusetts General Hospital, Boston, MA 02114, USA
- Harvard Medical School, Boston, MA 02114, USA
| | - Natalie R Grant
- Department of Neurology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Swathi Sethuram
- Department of Pediatric Endocrinology, Massachusetts General Hospital, Boston, MA 02114, USA
- Harvard Medical School, Boston, MA 02114, USA
| | - Amanda Nagy
- Harvard Medical School, Boston, MA 02114, USA
- Department of Neurology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Catherine Becker
- Department of Neurology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Inderneel Sahai
- Harvard Medical School, Boston, MA 02114, USA
- Department of Genetics, Massachusetts General Hospital, Boston MA, 02114, USA
| | - Takara Stanley
- Department of Pediatric Endocrinology, Massachusetts General Hospital, Boston, MA 02114, USA
- Harvard Medical School, Boston, MA 02114, USA
| | - Alyssa Halper
- Department of Pediatric Endocrinology, Massachusetts General Hospital, Boston, MA 02114, USA
- Harvard Medical School, Boston, MA 02114, USA
| | - Florian S Eichler
- Harvard Medical School, Boston, MA 02114, USA
- Department of Neurology, Massachusetts General Hospital, Boston, MA 02114, USA
| |
Collapse
|
8
|
Yska HAF, Henneman L, Barendsen RW, Engelen M, Kemp S. Attitudes of Patients with Adrenoleukodystrophy towards Sex-Specific Newborn Screening. Int J Neonatal Screen 2023; 9:51. [PMID: 37754777 PMCID: PMC10531683 DOI: 10.3390/ijns9030051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/29/2023] [Accepted: 09/01/2023] [Indexed: 09/28/2023] Open
Abstract
Newborn screening (NBS) for X-linked adrenoleukodystrophy (ALD) can identify affected individuals before the onset of life-threatening manifestations. Some countries have decided to only screen boys (sex-specific screening). This study investigates the attitudes of individuals with ALD towards sex-specific NBS for ALD. A questionnaire was sent to all patients in the Dutch ALD cohort. Invitees were asked who they thought should be screened for ALD: only boys, both boys and girls or neither. The motives and background characteristics of respondents were compared between screening preferences. Out of 108 invitees, 66 participants (61%), 38 men and 28 women, participated in this study. The majority (n = 53, 80%) favored screening both newborn boys and girls for ALD, while 20% preferred boys only. None of the respondents felt that newborns should not be screened for ALD. There were no differences in the background characteristics of the respondents between screening preferences. Our study revealed a diverse range of motivations underlying respondents' screening preferences. This study is one of the first to investigate the attitudes of patients towards sex-specific screening for ALD. The outcomes of this study can offer insights to stakeholders engaged in the implementation of NBS programs. ALD patients are important stakeholders who can provide valuable input in this process.
Collapse
Affiliation(s)
- Hemmo A. F. Yska
- Department of Child Neurology, Amsterdam Leukodystrophy Center, Emma Children’s Hospital, Amsterdam UMC Location University of Amsterdam, Amsterdam Neuroscience, 1105 AZ Amsterdam, The Netherlands; (H.A.F.Y.); (M.E.)
| | - Lidewij Henneman
- Department of Human Genetics, Amsterdam Reproduction and Development Research Institute, Amsterdam UMC Location Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands;
| | - Rinse W. Barendsen
- Laboratory Genetic Metabolic Diseases, Department of Clinical Chemistry, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC Location University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
| | - Marc Engelen
- Department of Child Neurology, Amsterdam Leukodystrophy Center, Emma Children’s Hospital, Amsterdam UMC Location University of Amsterdam, Amsterdam Neuroscience, 1105 AZ Amsterdam, The Netherlands; (H.A.F.Y.); (M.E.)
| | - Stephan Kemp
- Laboratory Genetic Metabolic Diseases, Department of Clinical Chemistry, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC Location University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
| |
Collapse
|
9
|
Pitts L, White JM, Ladores S, Wilson CM. The impacts of adrenoleukodystrophy newborn screening on the evaluation of adrenal dysfunction in male children: An integrative literature review. J Pediatr Nurs 2023; 72:e53-e70. [PMID: 37331834 DOI: 10.1016/j.pedn.2023.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/12/2023] [Accepted: 06/04/2023] [Indexed: 06/20/2023]
Abstract
PROBLEM Adrenoleukodystrophy (ALD) is an x-linked genetic condition with a high risk of adrenal dysfunction recommended for newborn screening. This review aims to critically appraise and synthesize existing literature identifying the impacts of ALD newborn screening in the United States on the evaluation and treatment of adrenal dysfunction in male children. ELIGIBILITYCRITERIA An integrative literature review was conducted using the Embase, PubMed, and CINAHL databases. English-language primary source studies published in the past decade and seminal studies were included. SAMPLE Twenty primary sources met the inclusion criteria, including five seminal studies. RESULTS Three major themes emerged from the review: 1) prevention of adrenal crisis, 2) unexpected outcomes, and 3) ethical impacts. CONCLUSIONS ALD screening increases disease identification. Serial adrenal evaluation prevents adrenal crisis and death; data is needed to establish predictive outcomes in ALD prognosis. Disease incidence and prognosis will become more apparent as states increasingly add ALD screening to their newborn panel. IMPLICATIONS FOR PRACTICE Clinicians need awareness of ALD newborn screening and state screening protocols. Families first learning of ALD through newborn screening results will require education, support, and timely referrals for appropriate care.
Collapse
Affiliation(s)
- Leslie Pitts
- The University of Alabama at Birmingham School of Nursing, United States.
| | | | - Sigrid Ladores
- The University of Alabama at Birmingham School of Nursing, United States
| | - Christina M Wilson
- The University of Alabama at Birmingham School of Nursing, United States; The University of Alabama Heersink School of Medicine, Division of Gynecologic Oncology, United States
| |
Collapse
|
10
|
Ulph F, Bennett R. Psychological and Ethical Challenges of Introducing Whole Genome Sequencing into Routine Newborn Screening: Lessons Learned from Existing Newborn Screening. New Bioeth 2023; 29:52-74. [PMID: 36181705 DOI: 10.1080/20502877.2022.2124582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
As a psychologist and an ethicist, we have explored empirically newborn screening consent and communication processes. In this paper we consider the impact on families if newborn screening uses whole genome sequencing. We frame this within the World Health Organization's definition of health and contend that proposals to use whole genome sequencing in newborn screening take into account the ethical, practical and psychological impact of such screening. We argue that the important psychological processes occurring in the neonatal phase necessitate a clear justification that providing risk information at this stage provides a health benefit. We illustrate how research on current newborn screening can inform whole genome sequencing debates, whilst highlighting important gaps. Obtaining explicit, voluntary, and sufficiently informed consent for newborn screening is challenging, however we stress that such consent is ethically and legally appropriate and psychologically and practically important. We conclude by outling how this might be done.
Collapse
Affiliation(s)
- Fiona Ulph
- Division of Psychology & Mental Health, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Rebecca Bennett
- Centre for Social Ethics and Policy, Department of Law, School of Social Sciences, Faculty of Humanities, University of Manchester, Manchester, UK
| |
Collapse
|
11
|
Pierpont EI, Isaia AR, McCoy E, Brown SJ, Gupta AO, Eisengart JB. Neurocognitive and mental health impact of adrenoleukodystrophy across the lifespan: Insights for the era of newborn screening. J Inherit Metab Dis 2023; 46:174-193. [PMID: 36527290 PMCID: PMC10030096 DOI: 10.1002/jimd.12581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
X-linked adrenoleukodystrophy (ALD) is a rare inherited neurological disorder that poses considerable challenges for clinical management throughout the lifespan. Although males are generally more severely affected than females, the time course and presentation of clinical symptoms are otherwise difficult to predict. Opportunities to improve outcomes for individuals with ALD are rapidly expanding due to the introduction of newborn screening programs for this condition and an evolving treatment landscape. The aim of this comprehensive review is to synthesize current knowledge regarding the neurocognitive and mental health effects of ALD. This review provides investigators and clinicians with context to improve case conceptualization, inform prognostic counseling, and optimize neuropsychological and mental health care for patients and their families. Results highlight key predictive factors and brain-behavior relationships associated with the diverse manifestations of ALD. The review also discusses considerations for endpoints within clinical trials and identifies gaps to address in future research.
Collapse
Affiliation(s)
| | - Ashley R. Isaia
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Erin McCoy
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Sarah J. Brown
- Health Sciences Library, University of Minnesota, Minneapolis, Minnesota
| | - Ashish O. Gupta
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Julie B. Eisengart
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| |
Collapse
|
12
|
Koto Y, Ueki S, Yamakawa M, Sakai N. Experiences of patients and their family members with metachromatic leukodystrophy, adrenoleukodystrophy, and Krabbe disease: a qualitative systematic review protocol. JBI Evid Synth 2022; 21:1027-1033. [PMID: 36458855 DOI: 10.11124/jbies-22-00154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
OBJECTIVE The objective of this review is to synthesize the experiences of patients with metachromatic leukodystrophy (MLD), adrenoleukodystrophy (ALD), and Krabbe disease and the experiences of their family members. INTRODUCTION MLD, ALD, and Krabbe disease are rare disorders that are classified as lysosomal storage or peroxisomal disorders, with similar presentations as leukodystrophy. As these diseases cause cognitive and neurological decline due to the progression of leukodystrophy associated with demyelination, they have significant impact on the lives of patients and their families. It is important to identify the impact and challenges of these diseases on patients' lives and on their families, as well as to synthesize qualitative studies regarding their experiences. INCLUSION CRITERIA We will consider studies including patients with MLD, ALD, or Krabbe disease and their family members. These experiences will include the challenges, dissatisfactions, and frustrations with symptoms and treatments; complications of hematopoietic stem cell transplantation; and the increased caregiver burden with disease progression. This is important since the impacts of disease progression are experienced in a variety of settings beyond the hospital, such as in the community and at home. METHODS The search strategy will follow JBI methodology and be conducted in 3 steps: an initial limited search, a comprehensive database search, and a reference search of the included articles. MEDLINE, CINAHL Plus, PsycINFO, and Scopus will be searched with no restriction on language or publication dates. The study selection, critical appraisal, data extraction, and data synthesis will be performed according to JBI guidelines for systematic reviews of qualitative research. Final syntheses will be assessed using the ConQual approach. SYSTEMATIC REVIEW REGISTRATION NUMBER PROSPERO CRD42022318805.
Collapse
|
13
|
Boychuk NA, Mulrooney NS, Kelly NR, Goldenberg AJ, Silver EJ, Wasserstein MP. Parental Depression and Anxiety Associated with Newborn Bloodspot Screening for Rare and Variable-Onset Disorders. Int J Neonatal Screen 2022; 8:ijns8040059. [PMID: 36412585 PMCID: PMC9680490 DOI: 10.3390/ijns8040059] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/20/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022] Open
Abstract
The ability to screen newborns for a larger number of disorders, including many with variable phenotypes, is prompting debate regarding the psychosocial impact of expanded newborn bloodspot screening (NBS) on parents. This study compares psychological outcomes of parents of children with a range of NBS/diagnostic experiences, with a particular focus on lysosomal storage disorders (LSDs) and X-linked adrenoleukodystrophy (X-ALD) as representative disorders with complex presentations. An online cross-sectional survey with six domains was completed in 2019 by a volunteer sample of parents with at least one child born between 2013 and 2018. Parents were classified in the analysis stage into four groups based on their child's rare disorder and means of diagnosis. Stress and depression were estimated using dichotomous measures of the depression subscale of the Hospital Anxiety and Depression Scale and the Parental Stress Scale. Logistic regression models were estimated for the relationship between the parent group and stress/depression, controlling for demographic variables (region of the US, income, education, major life events, relationship to the child, number of children, parent age, and race/ethnicity). One hundred seventy-four parents were included in this analysis. Parents of children with an LSD or X-ALD diagnosis clinically may have higher odds of depression (OR: 6.06, 95% CI: 1.64-24.96) compared to parents of children with the same disorders identified through NBS, controlling for covariates. Although a similar pattern was observed for parental stress (OR: 2.85, 95% CI: 0.82-10.37), this did not reach statistical significance. Ethically expanding NBS and genome sequencing require an understanding of the impacts of early detection for complex disorders on families. These initial findings are reassuring, and may have implications as NBS expands. Given our small sample size, it is difficult to generalize these findings to all families. These preliminary trends warrant further investigation in larger and more diverse populations.
Collapse
Affiliation(s)
- Natalie A. Boychuk
- Department of Pediatrics, Albert Einstein College of Medicine and Children’s Hospital at Montefiore, Bronx, NY 10467, USA
| | - Niamh S. Mulrooney
- Department of Pediatrics, Albert Einstein College of Medicine and Children’s Hospital at Montefiore, Bronx, NY 10467, USA
| | - Nicole R. Kelly
- Department of Pediatrics, Albert Einstein College of Medicine and Children’s Hospital at Montefiore, Bronx, NY 10467, USA
| | - Aaron J. Goldenberg
- Department of Bioethics, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Ellen J. Silver
- Department of Pediatrics, Albert Einstein College of Medicine and Children’s Hospital at Montefiore, Bronx, NY 10467, USA
| | - Melissa P. Wasserstein
- Department of Pediatrics, Albert Einstein College of Medicine and Children’s Hospital at Montefiore, Bronx, NY 10467, USA
- Correspondence:
| |
Collapse
|
14
|
Baker CV, Cady Keller A, Lutz R, Eveans K, Baumert K, DiPerna JC, Rizzo WB. Newborn Screening for X-Linked Adrenoleukodystrophy in Nebraska: Initial Experiences and Challenges. Int J Neonatal Screen 2022; 8:ijns8020029. [PMID: 35645283 PMCID: PMC9149921 DOI: 10.3390/ijns8020029] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 02/06/2023] Open
Abstract
X-linked adrenoleukodystrophy (X-ALD) is a neurodegenerative disease caused by pathogenic variants in ABCD1 resulting in defective peroxisomal oxidation of very long-chain fatty acids. Most male patients develop adrenal insufficiency and one of two neurologic phenotypes: a rapidly progressive demyelinating disease in mid-childhood (childhood cerebral X-ALD, ccALD) or an adult-onset spastic paraparesis (adrenomyeloneuropathy, AMN). The neurodegenerative course of ccALD can be halted if patients are treated with hematopoietic stem cell transplantation at the earliest onset of white matter disease. Newborn screening for X-ALD can be accomplished by measuring C26:0-lysophosphatidylcholine in dried blood spots. In Nebraska, X-ALD newborn screening was instituted in July 2018. Over a period of 3.3 years, 82,920 newborns were screened with 13 positive infants detected (4 males, 9 females), giving a birth prevalence of 1:10,583 in males and 1:4510 in females. All positive newborns had DNA variants in ABCD1. Lack of genotype-phenotype correlations, absence of predictive biomarkers for ccALD or AMN, and a high proportion of ABCD1 variants of uncertain significance are unique challenges in counseling families. Surveillance testing for adrenal and neurologic disease in presymptomatic X-ALD males will improve survival and overall quality of life.
Collapse
Affiliation(s)
- Craig V. Baker
- Munroe-Meyer Institute for Genetics and Rehabilitation, University of Nebraska Medical Center, Omaha, NE 68198, USA; (C.V.B.); (A.C.K.); (R.L.)
| | - Alyssa Cady Keller
- Munroe-Meyer Institute for Genetics and Rehabilitation, University of Nebraska Medical Center, Omaha, NE 68198, USA; (C.V.B.); (A.C.K.); (R.L.)
| | - Richard Lutz
- Munroe-Meyer Institute for Genetics and Rehabilitation, University of Nebraska Medical Center, Omaha, NE 68198, USA; (C.V.B.); (A.C.K.); (R.L.)
| | - Karen Eveans
- Nebraska Newborn Screening Program, Department of Health and Human Services, Lincoln, NE 68509, USA; (K.E.); (K.B.)
| | - Krystal Baumert
- Nebraska Newborn Screening Program, Department of Health and Human Services, Lincoln, NE 68509, USA; (K.E.); (K.B.)
| | | | - William B. Rizzo
- Department of Pediatrics and Child Health Research Institute, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Correspondence: ; Tel.: +1-402-559-2560
| |
Collapse
|
15
|
Newborn Screening for X-Linked Adrenoleukodystrophy: Review of Data and Outcomes in Pennsylvania. Int J Neonatal Screen 2022; 8:ijns8020024. [PMID: 35466195 PMCID: PMC9036281 DOI: 10.3390/ijns8020024] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 11/24/2022] Open
Abstract
X-linked adrenoleukodystrophy (X-ALD) is the most common peroxisomal disorder. It results from pathogenic variants in ABCD1, which encodes the peroxisomal very-long-chain fatty acid transporter, causing a spectrum of neurodegenerative phenotypes. The childhood cerebral form of the disease is particularly devastating. Early diagnosis and intervention improve outcomes. Because newborn screening facilitates identification of at-risk individuals during their asymptomatic period, X-ALD was added to the Pennsylvania newborn screening program in 2017. We analyzed outcomes from the first four years of X-ALD newborn screening, which employed a two-tier approach and reflexive ABCD1 sequencing. There were 51 positive screens with elevated C26:0-lysophosphatidylcholine on second-tier screening. ABCD1 sequencing identified 21 hemizygous males and 24 heterozygous females, and clinical follow up identified four patients with peroxisomal biogenesis disorders. There were two false-positive cases and one false-negative case. Three unscreened individuals, two of whom were symptomatic, were diagnosed following their young siblings' newborn screening results. Combined with experiences from six other states, this suggests a U.S. incidence of roughly 1 in 10,500, higher than had been previously reported. Many of these infants lack a known family history of X-ALD. Together, these data highlight both the achievements and challenges of newborn screening for X-ALD.
Collapse
|
16
|
Chakraborty P, Potter BK, Hayeems RZ. Maximizing Benefits and Minimizing Harms: Diagnostic Uncertainty Arising From Newborn Screening. Pediatrics 2021; 148:183448. [PMID: 34814191 DOI: 10.1542/peds.2021-052822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/21/2021] [Indexed: 11/24/2022] Open
Affiliation(s)
- Pranesh Chakraborty
- Department of Pediatrics, Children's Hospital of Eastern Ontario and University of Ottawa, Ottawa, Ontario, Canada.,Newborn Screening Ontario, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Beth K Potter
- Newborn Screening Ontario, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada.,School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
| | - Robin Z Hayeems
- Program in Child Health Evaluative Sciences, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada.,Institute for Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
17
|
White AL, Boardman F, McNiven A, Locock L, Hinton L. Absorbing it all: A meta-ethnography of parents' unfolding experiences of newborn screening. Soc Sci Med 2021; 287:114367. [PMID: 34534781 PMCID: PMC8505793 DOI: 10.1016/j.socscimed.2021.114367] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 07/21/2021] [Accepted: 09/01/2021] [Indexed: 11/18/2022]
Abstract
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.
Collapse
Affiliation(s)
- Ashley L White
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK.
| | | | - Abigail McNiven
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Louise Locock
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Lisa Hinton
- The Healthcare Improvement Studies Institute, University of Cambridge, Cambridge, UK
| |
Collapse
|
18
|
Matteson J, Sciortino S, Feuchtbaum L, Bishop T, Olney RS, Tang H. Adrenoleukodystrophy Newborn Screening in California Since 2016: Programmatic Outcomes and Follow-Up. Int J Neonatal Screen 2021; 7:ijns7020022. [PMID: 33920672 PMCID: PMC8167547 DOI: 10.3390/ijns7020022] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/23/2021] [Accepted: 04/12/2021] [Indexed: 12/22/2022] Open
Abstract
X-linked adrenoleukodystrophy (ALD) is a recent addition to the Recommended Uniform Screening Panel, prompting many states to begin screening newborns for the disorder. We provide California's experience with ALD newborn screening, highlighting the clinical and epidemiological outcomes observed as well as program implementation challenges. In this retrospective cohort study, we examine ALD newborn screening results and clinical outcomes for 1,854,631 newborns whose specimens were received by the California Genetic Disease Screening Program from 16 February 2016 through 15 February 2020. In the first four years of ALD newborn screening in California, 355 newborns screened positive for ALD, including 147 (41%) with an ABCD1 variant of uncertain significance (VUS) and 95 males diagnosed with ALD. After modifying cutoffs, we observed an ALD birth prevalence of 1 in 14,397 males. Long-term follow-up identified 14 males with signs of adrenal involvement. This study adds to a growing body of literature reporting on outcomes of newborn screening for ALD and offering a glimpse of what other large newborn screening programs can expect when adding ALD to their screening panel.
Collapse
|