1. Growth hormone deficiency in a child with <scp>branchio‐oto‐renal</scp> spectrum disorder: Clinical evidence of <scp> EYA1 </scp> in pituitary development and a recommendation for pituitary function surveillance
- Author
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Sharon E. Libi, Karthik Muthusamy, Gayla L. Poling, Peter J. Tebben, Eva Morava, Christian Hanna, Lisa A. Schimmenti, Carl H. Cramer, Brendan C. Lanpher, and Derek R. Johnson
- Subjects
0301 basic medicine ,Pituitary gland ,medicine.diagnostic_test ,biology ,business.industry ,Physiology ,Magnetic resonance imaging ,030105 genetics & heredity ,Hypoglycemia ,biology.organism_classification ,medicine.disease ,Growth hormone deficiency ,03 medical and health sciences ,030104 developmental biology ,medicine.anatomical_structure ,Genetics ,Medicine ,Spectrum disorder ,Abnormality ,business ,Zebrafish ,Genetics (clinical) ,Branchio oto renal - Abstract
Branchio-oto-renal spectrum disorder (BORSD) is a rare autosomal dominant condition characterized by ear abnormalities with hard of hearing/deafness, second branchial arch malformations and renal anomalies. Pathogenic variations in EYA1 gene are found in the majority of clinically diagnosed individuals with BORSD. We describe an infant with BORSD related to a paternally inherited heterozygous pathogenic variation in EYA1 gene presenting with poor growth and hypoglycemia due to growth hormone deficiency. Magnetic resonance imaging revealed a diminutive pituitary gland and morphologically abnormal sella. Upon initiation of growth hormone therapy, the hypoglycemia resolved and catch up growth ensued. Pituitary abnormalities have not been reported previously in patients with BORSD. The zebrafish ortholog of eya1 is important for the development of adenohypophysis, suggesting that this patient's growth hormone deficiency and pituitary abnormality are part of BORSD. Inclusion of screening for pituitary hormone deficiency and pituitary imaging should be considered as a part of surveillance in patients with BORSD.
- Published
- 2020