A case of an infertile male with a small supernumerary marker chromosome negative for M-FISH and containing only heterochromatin.
J Assist Reprod Genet 2009;
26:291-5. [PMID:
19440834 DOI:
10.1007/s10815-009-9310-1]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Accepted: 04/23/2009] [Indexed: 10/20/2022] Open
Abstract
AIM
To describe the case of a 32-year-old infertile male with small supernumerary marker chromosome (sSMCs) in 80% of peripheral lymphocytes.
METHODS
G-banding, C-banding, STRP analysis, M-FISH and molecule diagnosis of Y-chromosomal microdeletions were performed to determine the origin of sSMCs.
RESULTS
The karyotype of this patient was established as 47, XY, +mar/46, XY. C-banding showed that the marker chromosome was composed of heterochromatin without visible euchromatic material. No positive result was obtained in STRP, M-FISH and the microdeletion analysis of Y- chromosome.
CONCLUSIONS
The small supernumerary marker chromosome could play a causative role in male infertility although the mechanism remains to be elucidated.
Collapse