| CASE REPORT |
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| Year : 2010 | Volume
: 5
| Issue : 1 | Page : 64-67 |
Paternally derived translocation t(8;18)(q22.1;q22)pat associated in a patient with developmental delay: Case report and review
Lakshmi Rao1, Murthy Kanakavalli1, Venkata Padmalatha1, Pratibha Nallari2, Lalji Singh1
1 Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, India
2 Department of Genetics, Osmania University, Hyderabad, India
Correspondence Address:
Lakshmi Rao
Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad - 500 007
India
 Source of Support: Grant from the Centre for Scientific and Industrial Research, New Delhi, Government of India., Conflict of Interest: None  | Check |
DOI: 10.4103/1817-1745.66686
The common cause of mental impairment and the wide range of physical abnormalities is balanced chromosome rearrangement. As such, it is difficult to interpret, posing as a diagnostic challenge in human development. We present a unique familial case report with the paternally inherited autosomal-balanced reciprocal translocation involving chromosomal regions 8q and 18q. The etiology of the translocation, i.e. 46,XX,t(8;18)(q22.1;q22) was detected by conventional high-resolution Giemsa-Trypsin-Giemsa-banding and fluorescence in situ hybridization techniques. The father was found to be the carrier of the chromosome defect and also the same was observed in the first female child referred with a history of delayed milestone development. However, the second female child showed normal 46, XX karyotype. This is the first report of reciprocal translocation involving 8q and 18q associated with the delayed milestone development. The reason likely may be due to the rearrangement of genetic material at these breakpoints having a crucial relationship and thus manifesting developmental delay in the progeny. Accordingly, this paper also shows genetic counseling discussion for the cause.
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