Confirmatory linkage of hypochondroplasia to chromosome arm 4p
- Univ. of Texas Medical School, Houston, TX (United States); and others
Hypochondroplasia is an inherited chondrodystrophy that is characterized by disproportionate short stature. A recent linkage study by LeMerrer et al. suggested that hypochondroplasia and achondroplasia are allelic conditions. Three groups have now mapped the achondroplasia locus to the telomeric region of chromosome 4. Recently, two mutations in fibroblast growth factor receptor 3 (FGFR3) at nucleotide 1138, in the transmembrane domain, were identified in 169 of 170 unrelated individuals with achondroplasia. Here, we report the results of a linkage study in 4 multigenerational families with hypochondroplasia and mutational analysis of nucleotide 1138 in one individual from each of these families, two nonfamilial hypochondroplasia individuals and sequencing of the transmembrane domain of the FGFR3 in three affected unrelated individuals. 13 refs., 1 tab.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 105220
- Journal Information:
- American Journal of Medical Genetics, Vol. 57, Issue 3; Other Information: PBD: 3 Jul 1995
- Country of Publication:
- United States
- Language:
- English
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