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Cathepsin K analysis in a pycnodysostosis cohort: demographic, genotypic and phenotypic features
(BIOMED CENTRAL LTD, 2014-01-01) Arman, Ahmet; Bereket, Abdullah; Coker, Ajda; Kiper, Pelin Ozlem Simsek; Guran, Tulay; Ozkan, Behzat; Atay, Zeynep; Akcay, Teoman; Haliloglu, Belma; Boduroglu, Koray; Alanay, Yasemin; Turan, Serap
Background: To characterize cathepsin K (CTSK) mutations in a group of patients with pycnodysostosis, who presented with either short stature or atypical fractures to pediatric endocrinology or dysmorphic features to pediatric genetics clinics. Methods: Seven exons and exon/intron boundaries of CTSK gene for the children and their families were amplified with PCR and sequenced. Sixteen patients from 14 families with pycnodysostosis, presenting with typical dysmorphic features, short stature, frequent fractures and osteosclerosis, were included in the study. Results: We identified five missense mutations (M1I, I249T, L7P, D80Y and D169N), one nonsense mutation (R312X) and one 301 bp insertion in intron 7, which is revealed as Alu sequence