PEX1 mutations in complementation group 1 of Zellweger spectrum patients correlate with severity of disease

TY - JOUR

T1 - PEX1 mutations in complementation group 1 of Zellweger spectrum patients correlate with severity of disease

AU - Preuss, Natalie

AU - Brosius, Ute

AU - Biermanns, Martina

AU - Muntau, Ania C

AU - Conzelmann, Ernst

AU - Gartner, Jutta

PY - 2002/6

Y1 - 2002/6

N2 - The peroxisome biogenesis disorders (PBD) are a group of autosomal-recessive diseases with complex developmental and metabolic phenotypes, including the Zellweger spectrum and rhizomelic chondrodysplasia punctata. The diseases are caused by defects in peroxisomal matrix protein import and are characterized by the loss of multiple peroxisomal metabolic functions. In humans, 12 complementation groups have been identified, with complementation group 1 accounting for more than two thirds of all PBD patients. Mutations in the PEX1 gene encoding a member of the AAA protein family of ATPases are responsible for the defects in this group, and a variety of PEX1 mutant alleles have been described. We characterized the PEX1 gene mutations and associated haplotypes in a group of thoroughly documented Zellweger spectrum patients in complementation group 1 who represent the broad range of phenotypic variation. We compared the type of mutation with the age of survival, clinical manifestations, and biochemical alterations and found a close relationship between genotype and age of survival. Missense mutations cause a milder form of disease, whereas insertions, deletions, and nonsense mutations are associated with severe clinical phenotypes. Thus, knowing the PEX1 gene mutation is helpful in predicting the course of disease in individual cases.

AB - The peroxisome biogenesis disorders (PBD) are a group of autosomal-recessive diseases with complex developmental and metabolic phenotypes, including the Zellweger spectrum and rhizomelic chondrodysplasia punctata. The diseases are caused by defects in peroxisomal matrix protein import and are characterized by the loss of multiple peroxisomal metabolic functions. In humans, 12 complementation groups have been identified, with complementation group 1 accounting for more than two thirds of all PBD patients. Mutations in the PEX1 gene encoding a member of the AAA protein family of ATPases are responsible for the defects in this group, and a variety of PEX1 mutant alleles have been described. We characterized the PEX1 gene mutations and associated haplotypes in a group of thoroughly documented Zellweger spectrum patients in complementation group 1 who represent the broad range of phenotypic variation. We compared the type of mutation with the age of survival, clinical manifestations, and biochemical alterations and found a close relationship between genotype and age of survival. Missense mutations cause a milder form of disease, whereas insertions, deletions, and nonsense mutations are associated with severe clinical phenotypes. Thus, knowing the PEX1 gene mutation is helpful in predicting the course of disease in individual cases.

KW - ATPases Associated with Diverse Cellular Activities

KW - Adolescent

KW - Adult

KW - Child

KW - Child, Preschool

KW - Fatty Acids/blood

KW - Genetic Complementation Test

KW - Genotype

KW - Haplotypes

KW - Humans

KW - Membrane Proteins/genetics

KW - Phenotype

KW - Polymorphism, Single-Stranded Conformational

KW - Severity of Illness Index

KW - Zellweger Syndrome/genetics

U2 - 10.1203/00006450-200206000-00008

DO - 10.1203/00006450-200206000-00008

M3 - SCORING: Journal article

C2 - 12032265

VL - 51

SP - 706

EP - 714

JO - PEDIATR RES

JF - PEDIATR RES

SN - 0031-3998

IS - 6

ER -