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Molecular basis of late infantile metachromatic leukodystrophy in the Habbanite Jews.
Hum Mutat
June 1995
Department of Human Genetics, Hadassah Medical Center, Jerusalem, Israel.
Late infantile metachromatic leukodystrophy (MLD) is a neurodegenerative disease, most commonly caused by the deficiency of the lysosomal enzyme arylsulfatase A (ARSA). Late infantile MLD is frequent (1/75 live birth) in a small Jewish community which lived in Habban, isolated from the other Jewish populations. The gene coding for ARSA was sequenced in one of the Habbanite patients, who was found to be homozygous for an allele having three mutations.
View Article and Find Full Text PDFLate infantile metachromatic leukodystrophy in Israel.
Biomed Pharmacother
March 1995
Department of Human Genetics, Hadassah Medical Center, Hebrew University Jerusalem, Israel.
Metachromatic Leukodystrophy (MLD) is a neurodegenerative disease in which the lysosomal enzyme, Aryl sulfatase A (ARSA) is deficient. The disease is inherited as an autosomal recessive trait and its frequency is estimated to be 1/40,000 live births. The gene of ARSA has been cloned and up to now eight mutations causing MLD have been reported.
View Article and Find Full Text PDFA very high incidence of late infantile metachromatic leukodystrophy (MLD) (1/75 live births) was found in the Jewish Habbanite community which constitutes a genetic isolate of about 1,000-1,200 individuals. Screening in this population for aryl sulfatase A (ASA) levels in married adults revealed a carrier frequency for MLD of 17% and identified six couples of whom both partners were heterozygotes (6% of screened couples). In three pregnancies of these couples, prenatal diagnosis for the detection of ASA in the fetus was performed.
View Article and Find Full Text PDFLinkage analysis and the inheritance of arches in a Habbanite isolate.
Am J Hum Genet
September 1979
A pedigree and linkage analysis was performed on a corrected version of the Habbanite pedigree 2 of Slatis et al. [1]. The trait "arch on any digit" was examined for major gene inheritance and possible linkage to several blood and serum group markers.
View Article and Find Full Text PDFAnalysis of the fingerprints of 571 members of the Habbanite isolate suggest inherited patterns and pattern sequences. A genetic theory has been developed; it assumes that the basic fingerprint pattern sequence is all ulnar loops and that a variety of genes cause deviations from this pattern sequence. Genes that have been proposed include: (1) a semidominant gene for whorls on the thumbs (one homozygote has whorls on both thumbs, the other has ulnar loops on both thumbs and the heterozygote usually has two ulnar loops or one ulnar loop and one whorl); (2) a semidominant gene for whorls on the ring fingers which acts like the gene for whorls on the thumbs; (3) a dominant gene for arches on the thumbs and often on other fingers; (4) one or more dominant genes for arches on the fingers; (5) a dominant gene for whorls on all fingers except for an ulnar loop on the middle finger; (6) a dominant gene for radial loops on the index fingers, frequently associated with an arch on the middle fingers; and (7) a recessive gene for radial loops on the ring and little fingers.
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