CASE REPORT |
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Year : 2011 | Volume
: 17
| Issue : 2 | Page : 94-96 |
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McKusick-Kaufman or Bardet-Biedl syndrome? A new borderline case in an Italian nonconsanguineous healthy family
Massimiliano Chetta1, Nenad Bukvic2, Valeria Bafunno1, Michelina Sarno1, Rosario Magaldi3, Gianpaolo Grilli4, Vincenzo Bertozzi4, Francesco Perfetto4, Maurizio Margaglione5
1 Genetica Medica, Dipartimento di Scienze Biomediche, Universitą degli Studi di Foggia, Foggia, Italy 2 Ospedali Riuniti di Foggia, Sezione di Citogenetica e Biologia Molecolare - II Lab, Foggia, Italy 3 Reparto di Neonatologia, Ospedali Riuniti di Foggia, Foggia, Italy 4 Diagnostica per Immagini Ospedali Riuniti, Foggia, Italy 5 Genetica Medica, Dipartimento di Scienze Biomediche, Universitą degli Studi di Foggia, Foggia;Unitą di Emostasi e Trombosi, I.R.C.C.S.S. Giovanni Rotondo, Italy
Correspondence Address:
Massimiliano Chetta Genetica Medica, Dipartimento di Scienze Biomediche, Universitą degli Studi di Foggia, Foggia Italy
Source of Support: None, Conflict of Interest: None
DOI: 10.4103/0971-6866.86194
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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). |
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