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Ahmed SF, Alimusina M, Batista RL, Domenice S, Lisboa Gomes N, McGowan R, Patjamontri S, Mendonca BB. The Use of Genetics for Reaching a Diagnosis in XY DSD. Sex Dev 2022; 16:207-224. [DOI: 10.1159/000524881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/03/2022] [Indexed: 11/19/2022] Open
Abstract
Reaching a firm diagnosis is vital for the long-term management of a patient with a difference or disorder of sex development (DSD). This is especially the case in XY DSD where the diagnostic yield is particularly low. Molecular genetic technology is playing an increasingly important role in the diagnostic process, and it is highly likely that it will be used more often at an earlier stage in the diagnostic process. In many cases of DSD, the clinical utility of molecular genetics is unequivocally clear, but in many other cases there is a need for careful exploration of the benefit of genetic diagnosis through long-term monitoring of these cases. Furthermore, the incorporation of molecular genetics into the diagnostic process requires a careful appreciation of the strengths and weaknesses of the evolving technology, and the interpretation of the results requires a clear understanding of the wide range of conditions that are associated with DSD.
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Ahmed SF, Achermann J, Alderson J, Crouch NS, Elford S, Hughes IA, Krone N, McGowan R, Mushtaq T, O'Toole S, Perry L, Rodie ME, Skae M, Turner HE. Society for Endocrinology UK Guidance on the initial evaluation of a suspected difference or disorder of sex development (Revised 2021). Clin Endocrinol (Oxf) 2021; 95:818-840. [PMID: 34031907 DOI: 10.1111/cen.14528] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/30/2021] [Accepted: 05/13/2021] [Indexed: 11/26/2022]
Abstract
It is paramount that any child or adolescent with a suspected difference or disorder of sex development (DSD) is assessed by an experienced clinician with adequate knowledge about the range of conditions associated with DSD and is discussed with the regional DSD service. In most cases, the paediatric endocrinologist within this service acts as the first point of contact but involvement of the regional multidisciplinary service will also ensure prompt access to specialist psychology and nursing care. The underlying pathophysiology of DSD and the process of delineating this should be discussed with the parents and affected young person with all diagnostic tests undertaken in a timely fashion. Finally, for rare conditions such as these, it is imperative that clinical experience is shared through national and international clinical and research collaborations.
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Affiliation(s)
- S Faisal Ahmed
- Developmental Endocrinology Research Group, School of Medicine, Dentistry and Nursing, University of Glasgow, Glasgow, UK
- Royal Hospital for Children, NHS Greater Glasgow & Clyde, Glasgow, UK
- Office for Rare Conditions, School of Medicine, Dentistry and Nursing, University of Glasgow, Glasgow, UK
| | - John Achermann
- Genetics & Genomic Medicine Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Julie Alderson
- Psychological Health Services, University Hospitals Bristol & Weston NHS Foundation Trust, Bristol, UK
| | - Naomi S Crouch
- Department of Women's Health, St Michael's Hospital, University Hospitals Bristol & Weston NHS Foundation Trust, Bristol, UK
| | | | - Ieuan A Hughes
- DSDFamilies, UK
- Department of Paediatrics, University of Cambridge, Cambridge, UK
| | - Nils Krone
- Academic Unit of Child Health, Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK
| | - Ruth McGowan
- Developmental Endocrinology Research Group, School of Medicine, Dentistry and Nursing, University of Glasgow, Glasgow, UK
- West of Scotland Centre for Genomic Medicine, NHS Greater Glasgow & Clyde, Glasgow, UK
| | - Talat Mushtaq
- Department of Paediatric Endocrinology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Stuart O'Toole
- Royal Hospital for Children, NHS Greater Glasgow & Clyde, Glasgow, UK
- Department of Paediatric Urology, Royal Hospital for Children, NHS Greater Glasgow & Clyde, Glasgow, UK
| | - Leslie Perry
- Department of Clinical Biochemistry, Croydon University Hospital, London, UK
| | - Martina E Rodie
- Royal Hospital for Children, NHS Greater Glasgow & Clyde, Glasgow, UK
- Office for Rare Conditions, School of Medicine, Dentistry and Nursing, University of Glasgow, Glasgow, UK
- Department of Neonatology, Queen Elizabeth University Hospital, Glasgow, UK
| | - Mars Skae
- Department of Paediatric Endocrinology, Royal Manchester Children's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Helen E Turner
- Oxford Centre for Diabetes, Endocrinology and Metabolism, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
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Lucas-Herald AK, Kyriakou A, Alimussina M, Guaragna-Filho G, Diver LA, McGowan R, Smith K, McNeilly JD, Ahmed SF. Serum Anti-Müllerian Hormone in the Prediction of Response to hCG Stimulation in Children With DSD. J Clin Endocrinol Metab 2020; 105:5722325. [PMID: 32016383 PMCID: PMC7096311 DOI: 10.1210/clinem/dgaa052] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 02/03/2020] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The relationship between serum anti-Müllerian hormone (AMH) and the testosterone response to human chorionic gonadotropin (hCG) stimulation test is unclear. METHODS Children who had hCG stimulation tests in one tertiary centre from 2001 to 2018 were included (n = 138). Serum testosterone was measured before (day 1 [D1]) and after 3 days (D4) of hCG stimulation. Sixty-one of these children also had prolonged hCG stimulation for 2 more weeks and serum testosterone measured after 21 days (D22). All children had a serum AMH measured on D1. RESULTS Of the 138 children, D4 testosterone was normal in 104 (75%). AMH was low in 24/138 (17%) children, and 16 (67%) of these had a low D4 testosterone. Median AMH in those who had a normal vs low D4 testosterone was 850 pmol/L (24, 2280) and 54 pmol/L (0.4, 1664), respectively (P < 0.0001). An AMH > 5th centile was associated with a low D4 testosterone in 18/118 (13%; P < 0.0001). Of the 61 children who had prolonged hCG stimulation, D22 testosterone was normal in 39 (64%). AMH was low in 10/61(16%) children and 9 (90%) of these had a low D22 testosterone. Median AMH in children who responded and did not respond by D22 was 639 pmol/L (107, 2280) and 261 pmol/L (15, 1034) (P < 0.0001). CONCLUSION A normal AMH may provide valuable information on overall testicular function. However, a low AMH does not necessarily predict a suboptimal testosterone response to hCG stimulation.
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Affiliation(s)
- Angela K Lucas-Herald
- Developmental Endocrinology Research Group, University of Glasgow, Glasgow, UK
- British Heart Foundation Centre for Research Excellence, University of Glasgow, Glasgow, UK
- Correspondence and Reprint Requests: Professor S Faisal Ahmed MD FRCPCH, School of Medicine, Dentistry & Nursing, University of Glasgow, Office Block, Royal Hospital For Children, 1345 Govan Road, Glasgow, G51 4TF. E-mail:
| | - Andreas Kyriakou
- Developmental Endocrinology Research Group, University of Glasgow, Glasgow, UK
| | - Malika Alimussina
- Developmental Endocrinology Research Group, University of Glasgow, Glasgow, UK
| | | | - Louise A Diver
- West of Scotland Molecular and Clinical Genetics Service, Queen Elizabeth University Hospital, Glasgow, UK
| | - Ruth McGowan
- Developmental Endocrinology Research Group, University of Glasgow, Glasgow, UK
- West of Scotland Molecular and Clinical Genetics Service, Queen Elizabeth University Hospital, Glasgow, UK
| | - Karen Smith
- Department of Biochemistry, Glasgow Royal Infirmary, Glasgow, UK
| | - Jane D McNeilly
- Department of Biochemistry, Queen Elizabeth University Hospital, Glasgow, UK
| | - S Faisal Ahmed
- Developmental Endocrinology Research Group, University of Glasgow, Glasgow, UK
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Abstract
PURPOSE OF REVIEW The current review focuses on the neonatal presentation of disorders of sex development, summarize the current approach to the evaluation of newborns and describes recent advances in understanding of underlying genetic aetiology of these conditions. RECENT FINDINGS Several possible candidate genes as well as other adverse environmental factors have been described as contributing to several clinical subgroups of 46,XY DSDs. Moreover, registry-based studies showed that infants with suspected DSD may have extragenital anomalies and in 46,XY cases, being small for gestational age (SGA), cardiac and neurological malformations are the commonest concomitant conditions. SUMMARY Considering that children and adults with DSD may be at risk of several comorbidities a clear aetiological diagnosis will guide further management. To date, a firm diagnosis is not reached in over half of the cases of 46,XY DSD. Whilst it is likely that improved diagnostic resources will bridge this gap in the future, the next challenge to the clinical community will be to show that such advances will result in an improvement in clinical care.
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Al-Juraibah FN, Lucas-Herald AK, Alimussina M, Ahmed SF. The evaluation and management of the boy with DSD. Best Pract Res Clin Endocrinol Metab 2018; 32:445-453. [PMID: 30086868 DOI: 10.1016/j.beem.2018.05.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Atypical genitalia in a boy may have a very wide and diverse aetiology and a definitive diagnosis is often challenging to reach. Detailed clinical evaluation integrated with extensive biochemical and genetic studies play an important role in this process. Such care should be undertaken in highly specialized centres that can also provide access to a multidisciplinary team for optimal long-term care.
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Affiliation(s)
- F N Al-Juraibah
- Developmental Endocrinology Research Group, University of Glasgow, UK; Department of Paediatrics, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - A K Lucas-Herald
- Developmental Endocrinology Research Group, University of Glasgow, UK
| | - M Alimussina
- Developmental Endocrinology Research Group, University of Glasgow, UK
| | - S F Ahmed
- Developmental Endocrinology Research Group, University of Glasgow, UK.
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