Abstract
Background
Subtelomeric deletion 1p is difficult to detect from banded karyotypes. Recent developments in the field of molecular cytogenetics have made it possible for submicroscopic rearrangements within chromosomes to be detected using fluorescence in situ hybridization (FISH) techniques.
Materials and methods
We describe prenatal FISH testing of subtelomeric 1p deletion in a fetus of a mother whose previous child had subtelomeric 1p deletion.
Results
Fluorescent in situ hybridization from fetal cells demonstrated normal 1p, thus predicting a very high likelihood of an unaffected fetus. The study was confirmed by the birth of a normal neonate.
Conclusions
We report the use of molecular genetic testing to exclude subtelomeric 1p deletion prenatally. Prenatal diagnostic testing for a known deletion is a reasonable option for couples at risk for having a child with subtelomeric 1p deletion. Molecular testing is more accurate and reliable than ultrasonography and provides families with reassurance.
Similar content being viewed by others
References
Cunningham FG, Leveno KJ, Bloom SL, Hauth JC, Gilstrap LCI, Wenstrom KD (2004) Williams obstetrics, 22nd edn. McGraw-Hill, New York
Flint J, Wilkie AO, Buckle VJ, Winter RM, Holland AJ, McDermid HE (1995) The detection of subtelomeric chromosomal rearrangements in idiopathic mental retardation. Nat Genet 9:132–140
Giraudeau F, Aubert D, Young I, Horsley S, Knight S, Kearney L, Vergnaud G, Flint J (1997) Molecular-cytogenetic detection of a deletion of 1p36.3. J Med Genet 34:314–317
Knight SJ, Horsley SW, Regan R, Lawrie NM, Maher EJ, Cardy DL, Flint J, Kearney L (1997) Development and clinical application of an innovative fluorescence in situ hybridization technique which detects submicroscopic rearrangements involving telomeres. Eur J Hum Genet 5:1–8
Reish O, Berry SA, Hirsch B (1995) Partial monosomy of chromosome 1p36.3 characterization of the critical region and delineation of a syndrome. Am J Med Genet 59:467–475
Riegel M, Castellan C, Balmer D, Brecevic L, Schinzel A (1999) Terminal deletion, del(1)(p36.3), detected through screening for terminal deletions in patients with unclassified malformation syndromes. Am J Med Genet 82:249–253
Roberts AE, Cox GF, Kimonis V, Lamb A, Irons M (2004) Clinical presentation of 13 patients with subtelomeric rearrangements and a review of the literature. Am J Med Genet A 128:352–363
Acknowledgments
This study was supported by the Research Unit Grant from Chulalongkorn University. V. Praphanphoj and VS are supported by the National Center for Genetic Engineering and Biotechnology, and the Thailand Research Fund. We would like to thank Prof. David H. Ledbetter of Emory University School of Medicine, Atlanta, for his kind gift of BAC/PAC clones used in developing the subtelomeric FISH probe set.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Phupong, V., Praphanphoj, V. & Shotelersuk, V. Prenatal exclusion of subtelomeric deletion 1p by fluorescent in situ hybridization. Arch Gynecol Obstet 275, 237–240 (2007). https://doi.org/10.1007/s00404-006-0246-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00404-006-0246-8