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DNA‐based prenatal diagnosis of the infantile form of neuronal ceroid lipofuscinosis (INCL, CLN1)
Author(s) -
Järvelä Irma,
Rapola Juhani,
Peltonen Leena,
Puhakka Lea,
Vesa Jouni,
Ämmälä Pirkko,
Salonen Riitta,
Ryynänen Markku,
Haring Pertti,
Mustonen Aki,
Santavuori Pirkko
Publication year - 1991
Publication title -
prenatal diagnosis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.956
H-Index - 97
eISSN - 1097-0223
pISSN - 0197-3851
DOI - 10.1002/pd.1970110508
Subject(s) - restriction fragment length polymorphism , prenatal diagnosis , pregnancy , haplotype , locus (genetics) , fetus , medicine , pathology , biology , genetics , obstetrics , genotype , gene
Abstract Eleven fetuses at risk for the infantile form of neuronal ceroid lipofuscinosis (INCL, CLN1) were studied using DNA markers and the results were compared with the results of electron microscopy (EM) of chorionic villus specimens from pregnancies in the first or early second trimester of pregnancy. In four cases, the prenatal diagnosis was made independently with both methods, and in seven cases, the EM diagnosis was confirmed postnatally or from autopsy material using RFLP analysis. The two methods gave concordant results in all cases. The DNA analysis based on RFLP haplotypes also for the first time facilitates reliable carrier diagnostics. RFLP analysis based on polymorphic markers closely linked to the INCL locus is now available for prenatal diagnosis of this fatal brain disease, whose biochemical background is totally unknown and for which no treatment is available.