PMID- 10573015 OWN - NLM STAT- MEDLINE DCOM- 20000120 LR - 20220409 IS - 1018-4813 (Print) IS - 1018-4813 (Linking) VI - 7 IP - 7 DP - 1999 Oct-Nov TI - The second locus for autosomal recessive primary microcephaly (MCPH2) maps to chromosome 19q13.1-13.2. PG - 815-20 AB - Primary microcephaly is a clinical diagnosis made when an individual has a head circumference of greater than 3 standard deviations below the age and sex matched population mean, mental retardation but without other associated malformations and no apparent aetiology. The majority of cases of primary microcephaly exhibit an autosomal recessive mode of inheritance. We now demonstrate the genetic heterogeneity of this condition with the identification of a second primary microcephaly locus (MCPH2) on chromosome 19q13.1-13.2 in two multi-affected consanguineous families. The minimum critical region containing the MCPH2 locus is defined by the polymorphic markers D19S416 and D19S420 spanning a region of approximately 7.6 cM. FAU - Roberts, E AU - Roberts E AD - Molecular Medicine Unit, University of Leeds, St James's University Hospital, Leeds, UK. mmeer@leeds.ac.uk FAU - Jackson, A P AU - Jackson AP FAU - Carradice, A C AU - Carradice AC FAU - Deeble, V J AU - Deeble VJ FAU - Mannan, J AU - Mannan J FAU - Rashid, Y AU - Rashid Y FAU - Jafri, H AU - Jafri H FAU - McHale, D P AU - McHale DP FAU - Markham, A F AU - Markham AF FAU - Lench, N J AU - Lench NJ FAU - Woods, C G AU - Woods CG LA - eng GR - Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Eur J Hum Genet JT - European journal of human genetics : EJHG JID - 9302235 SB - IM MH - Adolescent MH - Chromosome Mapping MH - Chromosomes, Human, Pair 19/*genetics MH - Family MH - *Genes, Recessive MH - Genetic Linkage/*genetics MH - Homozygote MH - Humans MH - Male MH - Microcephaly/*genetics EDAT- 1999/11/26 00:00 MHDA- 1999/11/26 00:01 CRDT- 1999/11/26 00:00 PHST- 1999/11/26 00:00 [pubmed] PHST- 1999/11/26 00:01 [medline] PHST- 1999/11/26 00:00 [entrez] AID - 10.1038/sj.ejhg.5200385 [doi] PST - ppublish SO - Eur J Hum Genet. 1999 Oct-Nov;7(7):815-20. doi: 10.1038/sj.ejhg.5200385.