7341 Establishing a Multidisciplinary Care Program for patients with Klinefelter Syndrome and other Aneuploidy X and Y Variations
Authors: Romero C J , Malhotra N R , Norris-Brilliant A , Mintz C 
Published: October 2024

Abstract
Disclosure: C.J. Romero: None. N.R. Malhotra: None. A. Norris-Brilliant: None. C. Mintz: None.
Objectives: Klinefelter syndrome (KS) is one of the most common genetic aneuploidies denoted by a XXY karyotype and affects up to 1 in 600 patients. Most patients are not diagnosed until adolescent years or adulthood. KS is one of the leading causes of male infertility and testosterone insufficiency. KS is also associated with developmental delays, particularly speech and language delay. Advances in genetics screenings has led to early identification of KS and other aneuploidy X and Y variations, access to neurodevelopmental screening and fertility preservation resources during adolescence and young adulthood. We believe a multidisciplinary program for KS can provide the necessary resources for patients and families at any age from infancy to young adulthood. Methods: A group of faculty from the divisions of pediatric endocrinology, genetics, urology and psychiatry assembled in 2023 to establish a multidisciplinary clinic (MDC) to provide comprehensive care to patients/parents; this ranged from prenatal diagnosis to young adulthood. Two major challenges of care are access to neuro-psychological evaluations and fertility preservation options. Testosterone supplementation requires appropriate referral to endocrinology and timing of treatment remains controversial. Our goals include: expertise guidance and planning after prenatal diagnosis or later in age; access to cost effective neuro-psychological testing during early childhood years; urological consultation beginning in early puberty to educate and prepare patients for choices of surgical and non-surgical options of fertility preservation. Results: Our current center cares for 12 patents ranging from ages 3 months to 21 years. Of this cohort, 3 (25%) of the patients had initial consultations with the parents during pregnancy. 7 (58%) of the patients were of pubertal age that one would consider testosterone replacement, but only 3 (43%) were taking testosterone. Only 1 patient of school age reported neuro-psychological evaluation that was completed at a different institution. No patients received testosterone supplementation during year one of life. Conclusions: A multidisciplinary team can offer simultaneous assessment, anticipatory guidance and management for KS patients and their families. It is a comprehensive resource to our community. Prenatal genetic screenings bring awareness to this diagnosis and therefore timely education toward understanding the lifelong management of KS. Identifying developmental delays early in childhood will help with scholastic success. Monitoring of pubertal development will ensure appropriate pubertal progression in addition to education and management of fertility preservation. Undoubtedly future urological advances will assist patients more effectively. We believe our model provides the access to resources that allow our patients and family to successfully thrive.
Presentation: 6/2/2024