hrp0095p1-353 | Pituitary, Neuroendocrinology and Puberty | ESPE2022

A novel missense variant in the gene encoding Fatty Acid Synthase (FASN) associated with a unique multi-system disorder including hypopituitarism and hypoparathyroidism

Gregory Louise , Eaton Simon , Krywawych Stephen , Rahman Shamima , Dattani Mehul

Whole exome sequencing performed on a male patient with a unique complex phenotype revealed a novel de novo missense variant in FASN (c.6395C>T, p.A2132V), encoding Fatty Acid Synthase. The patient presented with panhypopituitarism (GH, TSH, LH, FSH and ACTH deficiencies), short stature, sensorineural deafness, hypoparathyroidism, retinal dystrophy, and developmental delay. He was 127 cm tall at the age of 21 and failed to respond to GH treatment [IGF-1 ge...