
Distal myopathy with rimmed vacuoles (DMRV) is an autosomal recessive muscular disorder that has been predominantly reported to occur in Japanese population. This disease is characterized clinically by weakness of the distal muscles in the lower limbs in early adulthood, most typically in the tibialis anterior muscle presenting with footdrop. Recently, the gene locus for familial vacuolar myopathy sparing quadriceps muscle with autosomal recessive inheritance (hereditary inclusion body myopathy, HIBM), which was reported to occur in Jews of Persian origin, was mapped to chromosome 9. Since DMRV and HIBM share similar clinical, genetic, and histopathological features, we performed linkage analysis on seven DMRV families. Detection of obligate recombination events as well as pairwise and multipoint linkage analyses revealed that the most likely location of the DMRV gene is in a 23.3 cM interval defined by D9S319 and D9S276 on chromosome 9, which overlap the critical region for HIBM locus. The results raise the possibility that DMRV and HIBM are allelic disease. Identification of the gene(s) for DMRV and HIBM using positional cloning strategy will lead to clarification of the genetic homogeniety for these diseases as well as the understanding in common pathways causing muscle degeneration with vacuolar formation.
Muscular Diseases, Vacuoles, Chromosome Mapping, Humans, Genes, Recessive, Chromosomes, Human, Pair 9, Muscle, Skeletal
Muscular Diseases, Vacuoles, Chromosome Mapping, Humans, Genes, Recessive, Chromosomes, Human, Pair 9, Muscle, Skeletal
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
