Detailed analysis of PRODH and PsPRODH reveals no association with schizophrenia

• Published in: American journal of medical genetics. Part B, Neuropsychiatric genetics Neuropsychiatric genetics, 2003-07, Vol.120B (1), p.42-46
• Main Authors: Williams, H.J., Williams, N., Spurlock, G., Norton, N., Zammit, S., Kirov, G., Owen, M.J., O'Donovan, M.C.
• Format: Article
• Language: English
• Subjects: 22q11; Adult; candidate gene; Chromosomes, Human, Pair 22; DNA Mutational Analysis - methods; Exons; Female; genetic association; Genetic Markers; Genetic Predisposition to Disease; Genotype; Haplotypes; Humans; Introns; Male; Middle Aged; Polymorphism, Single Nucleotide; Proline Oxidase - genetics; psychosis; Schizophrenia - genetics; Sequence Deletion
• ISSN: 1552-4841; 1552-485X
• DOI: 10.1002/ajmg.b.20049

People with deletion of the chromosome 22q11 region associated with velo cardio‐facial syndrome (VCFS) have a remarkably high risk of developing schizophrenia. Recently, the gene proline dehydrogenase (PRODH) which maps to 22q11 and is also an excellent functional candidate gene for psychosis, has been reported to show genetic association with schizophrenia. We have screened all the exons and adjacent intronic sequences of PRODH for the presence of sequence variation in 14 DSM IV schizophrenic subjects. Similarly, we also screened all putative exons of a sequence that is similar to proline dehydrogenase (PsPRODH) and which also maps within the deleted region. A total of nine single nucleotide polymorphisms (SNPs) were identified in PRODH, eight of which were exonic, while in PsPRODH, five SNPs were identified, one of which was in a putative exon. All samples were tested for association in a pooled sample of 368 DSM IV diagnosed schizophrenic subjects and 368 matched controls. None of the variants identified in PRODH gave even modest evidence for allelic association (P  A and 226G > A) gave P values