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Description of an autosomal dominant form of Kabuki syndrome by mutation in MLL...
Santos, MI; Beleza-Meireles, A; Loureiro, S; Fonseca, M; Reis, CF; Rodrigues, F; Ramos, F; Ramos, L; Cardoso, E; Saraiva, JMAims: Although there are more than 400 cases of Kabuki syndrome described in the literature, it is believed that this syndrome is under-diagnosed. Most cases occur sporadically, despite cases with autosomal dominant familial transmission being described. Here we describe three cases identified in the same family. Cases description: A family (mother and two children) was diagnosed with Kabuki syndrome. The three...
Intellectual disability, unusual facial morphology and hand anomalies in sibs
Sousa, SB; Venâncio, M; Chanudet, E; Palmer, R; Ramos, L; Beales, PL; Moore, GE; Saraiva, JM; Hennekam, RCHere we report on a Portuguese family with three sisters who shared moderate intellectual disability, unusual facial morphology (short palpebral fissures; broad nasal tip; thin upper and lower vermillion; broad and pointed chin) and hand anomalies in two of them (short left third and fifth right metacarpals in one case; marked syndactyly between the third and fourth fingers in another). One of the sisters had m...
Gain-of-function mutations in the phosphatidylserine synthase 1 (PTDSS1) gene c...
Sousa, SB; Jenkins, D; Chanudet, E; Tasseva, G; Ishida, M; Anderson, G; Docker, J; Ryten, M; Sá, J; Saraiva, JM; Barnicoat, A; Scott, R; Calder, ALenz-Majewski syndrome (LMS) is a syndrome of intellectual disability and multiple congenital anomalies that features generalized craniotubular hyperostosis. By using whole-exome sequencing and selecting variants consistent with the predicted dominant de novo etiology of LMS, we identified causative heterozygous missense mutations in PTDSS1, which encodes phosphatidylserine synthase 1 (PSS1). PSS1 is one of two...
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