Hu et al. (1996) and Laporte et al. (1997) recently proposed a novel contiguous gene syndrome of myotubular myopathy, abnormal male genital development and deletion in Xq28. We studied a family where two male infants, both deceased, had myotubular myopathy and intersexual genitalia. Using FISH we detected in the mother a hemizygous deletion including the myotubularin gene MTM1 and F18 (a gene of yet unknown function). DNA studies with STR-markers (short tandem repeats) within and flanking the deleted segment confirmed the deletion in the family and were used for prenatal diagnosis. Our findings confirm the existence of this novel contiguous gene syndrome and support that the deletion of the F18 gene, or a neighboring gene, may cause ambiguous genitalia or severe hypospadias in males. The mother had low muscle power and marked menstrual irregularities which may indicate that she is a manifesting carrier and that the deletion may include a gene (F18 or other) for gonadal function in females.
- MeSH
- chromozom X * genetika MeSH
- detekce genetických nosičů MeSH
- dospělí MeSH
- hybridizace in situ fluorescenční MeSH
- hypospadie diagnóza genetika MeSH
- kryptorchismus diagnóza genetika MeSH
- lidé MeSH
- nereceptorové tyrosinfosfatasy MeSH
- novorozenec MeSH
- pruhování chromozomů MeSH
- rodokmen MeSH
- sekvenční delece genetika MeSH
- svalová hypotonie diagnóza genetika MeSH
- syndrom MeSH
- tyrosinfosfatasy genetika nedostatek MeSH
- ztráta heterozygozity genetika MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- mužské pohlaví MeSH
- novorozenec MeSH
- ženské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
- práce podpořená grantem MeSH
