PMID- 16143025 OWN - NLM STAT- MEDLINE DCOM- 20051020 LR - 20191210 IS - 0009-9163 (Print) IS - 0009-9163 (Linking) VI - 68 IP - 4 DP - 2005 Oct TI - Comparative study of three diagnostic approaches (FISH, STRs and MLPA) in 30 patients with 22q11.2 deletion syndrome. PG - 373-8 AB - The 22q11.2 deletion syndrome is commonly diagnosed using fluorescence in situ hybridization (FISH) with commercial probes. The chromosomal breakpoints and deletion size are subsequently characterized by short tandem repeat (STR) segregation tests or by further FISH probes. Recently, a multiplex ligation-dependent probe amplification (MLPA) single tube assay was developed to detect deletions of the 22q11.2 region and other chromosomal regions associated with DiGeorge/velocardiofacial syndrome. We have compared the results of these three techniques in a group of 30 patients affected with 22q11.2 deletion syndrome. MLPA correctly called all patients who had been previously diagnosed by FISH. The MLPA results were concordant in all patients with the STR analysis in respect to deletion size. Furthermore, this novel technique resolved seven cases that were undetermined by STR analysis. These results confirm the efficiency of MLPA as a rapid, reliable, economical, high-throughput method for the diagnosis of 22q11.2 deletion syndrome. FAU - Fernandez, L AU - Fernandez L AD - Department of Medical Genetics, Hospital Universitario La Paz, Madrid, Spain. lfernandez.hulp@salud.madrid.org FAU - Lapunzina, P AU - Lapunzina P FAU - Arjona, D AU - Arjona D FAU - Lopez Pajares, I AU - Lopez Pajares I FAU - Garcia-Guereta, L AU - Garcia-Guereta L FAU - Elorza, D AU - Elorza D FAU - Burgueros, M AU - Burgueros M FAU - De Torres, M L AU - De Torres ML FAU - Mori, M A AU - Mori MA FAU - Palomares, M AU - Palomares M FAU - Garcia-Alix, A AU - Garcia-Alix A FAU - Delicado, A AU - Delicado A LA - eng PT - Comparative Study PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Clin Genet JT - Clinical genetics JID - 0253664 SB - IM MH - *Chromosome Deletion MH - *Chromosomes, Human, Pair 22 MH - DiGeorge Syndrome/genetics MH - Humans MH - *In Situ Hybridization, Fluorescence/methods MH - Karyotyping/methods MH - *Molecular Probe Techniques MH - *Nucleic Acid Amplification Techniques/methods MH - Syndrome MH - *Tandem Repeat Sequences MH - Velopharyngeal Insufficiency/genetics EDAT- 2005/09/07 09:00 MHDA- 2005/10/21 09:00 CRDT- 2005/09/07 09:00 PHST- 2005/09/07 09:00 [pubmed] PHST- 2005/10/21 09:00 [medline] PHST- 2005/09/07 09:00 [entrez] AID - CGE493 [pii] AID - 10.1111/j.1399-0004.2005.00493.x [doi] PST - ppublish SO - Clin Genet. 2005 Oct;68(4):373-8. doi: 10.1111/j.1399-0004.2005.00493.x.