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Indian Journal of Human Genetics
Medknow Publications on behalf of Indian Society of Human Genetics
ISSN: 0971-6866
EISSN: 0971-6866
Vol. 17, No. 2, 2011, pp. 94-96
Bioline Code: hg11022
Full paper language: English
Document type: Case Report
Document available free of charge

Indian Journal of Human Genetics, Vol. 17, No. 2, 2011, pp. 94-96

 en McKusick-Kaufman or Bardet-Biedl syndrome? A new borderline case in an Italian nonconsanguineous healthy family
Chetta, Massimiliano; Bukvic, Nenad; Bafunno, Valeria; Sarno, Michelina; Magaldi, Rosario; Grilli, Gianpaolo; Bertozzi, Vincenzo; Perfetto, Francesco & Margaglione, Maurizio

Abstract

McKusick-Kaufman syndrome (MKS, OMIM #236700) is a rare syndrome inherited in an autosomal recessive pattern with a phenotypic triad comprising hydrometrocolpos (HMC), postaxial polydactyly (PAP), and congenital cardiac disease (CHD). The syndrome is caused by mutations in the MKKS gene mapped onto chromosome 20p12 between D20S162 and D20S894 markers. Mutations in the same gene causes Bardet-Biedl-6 syndrome (BBS-6, OMIM #209900) inherited in an autosomal recessive pattern. BBS-6 comprises retinitis pigmentosa, polydactyly, obesity, mental retardation, renal and genital anomalies. HMC, CHD, and PAP defects can also occur in BBS-6, and there is a significant clinical overlap between MKS and BBS-6 in childhood. We describe a new borderline case of MKS and BBS syndrome and suggest insights for understanding correlation between MKKS gene mutations and clinical phenotype. Here, we report the results of molecular analysis of MKKS in a female proband born in an Italian nonconsanguineous healthy family that presents HMC and PAP. The mutational screening revealed the presence of two different heterozygous missense variants (p.242A>S in exon 3, p.339 I>V in exon 4) in the MKKS gene, and a nucleotide variation in 5′UTR region in exon 2 (-417 A>C).

Keywords
Hydrometrocolpos, McKusick-Kaufman syndrome, polydactyly

 
© Copyright 2011 Indian Journal of Human Genetics.
Alternative site location: http://www.ijhg.com/

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