Incidental finding of alpha-methylacyl-CoA racemase deficiency in a patient with oculocutaneous albinism type 4. 2012

Judith M A Verhagen, and Jan G Huijmans, and Monique Williams, and Rutger L J van Ruyven, and Arthur A B Bergen, and Cokkie H Wouters, and Alice S Brooks
Department of Clinical Genetics, Erasmus Medical Center, Rotterdam, The Netherlands.

Genome-wide studies may lead to the discovery of genetic variants of potential clinical importance beyond the aims of the study. We performed single nucleotide polymorphism array analysis in a boy with oculocutaneous albinism to identify copy-neutral regions of homozygosity harboring genes involved in melanin biosynthesis. An unanticipated homozygous deletion of chromosome 5p13.3 was discovered, encompassing not only the OCA gene SLC45A2, but also four additional genes. This led to an unexpected presymptomatic diagnosis of alpha-methylacyl-CoA racemase deficiency in the same patient.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D008297 Male Males
D010641 Phenotype The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment. Phenotypes
D002895 Chromosomes, Human, Pair 5 One of the two pairs of human chromosomes in the group B class (CHROMOSOMES, HUMAN, 4-5). Chromosome 5
D006720 Homozygote An individual in which both alleles at a given locus are identical. Homozygotes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D016115 Albinism, Oculocutaneous Heterogeneous group of autosomal recessive disorders comprising at least four recognized types, all having in common varying degrees of hypopigmentation of the skin, hair, and eyes. The two most common are the tyrosinase-positive and tyrosinase-negative types. Albinism, Tyrosinase-Negative,Albinism, Tyrosinase-Positive,Albinism, Yellow-Mutant,Oculocutaneous Albinism,Yellow Mutant Albinism,Albinism, Tyrosinase Negative,Albinism, Tyrosinase Positive,Albinism, Yellow Mutant,Mutant Albinism, Yellow,Mutant Albinisms, Yellow,Tyrosinase-Negative Albinism,Tyrosinase-Positive Albinism,Yellow-Mutant Albinism
D017384 Sequence Deletion Deletion of sequences of nucleic acids from the genetic material of an individual. Deletion Mutation,Deletion Mutations,Deletion, Sequence,Deletions, Sequence,Mutation, Deletion,Mutations, Deletion,Sequence Deletions
D019066 Facies The appearance of the face that is often characteristic of a disease or pathological condition, as the elfin facies of WILLIAMS SYNDROME or facies of DOWN SYNDROME. (Random House Unabridged Dictionary, 2d ed)
D019998 Racemases and Epimerases Enzymes that catalyze inversion of the configuration around an asymmetric carbon in a substrate having one (racemase) or more (epimerase) center(s) of asymmetry. (Dorland, 28th ed) EC 5.1. Epimerase,Epimerases,Racemase,Racemases,Epimerases and Racemases

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