Genetic linkage of Bietti crystallin corneoretinal dystrophy to chromosome 4q35

Am J Hum Genet. 2000 Nov;67(5):1309-13. doi: 10.1016/S0002-9297(07)62960-7. Epub 2000 Sep 21.


Bietti crystalline corneoretinal dystrophy (BCD) is an autosomal recessive retinal degeneration characterized by multiple glistening intraretinal dots scattered over the fundus, degeneration of the retina, and sclerosis of the choroidal vessels, ultimately resulting in progressive night blindness and constriction of the visual field. Although BCD has been associated with abnormalities in fatty-acid metabolism and absence of fatty-acid binding by two cytosolic proteins, the genetic basis of BCD is unknown. We report linkage of the BCD locus to D4S426 (maximum LOD score [Z(max)] 4.81; recombination fraction [straight theta] 0), D4S2688 (Zmax=3.97; straight theta=0), and D4S2299 (Zmax=5.31; straight theta=0), on chromosome 4q35-4qtel. Multipoint analysis confirmed linkage to the region telomeric of D4S1652 with a Z(max) of 5.3 located 4 cM telomeric of marker D4S2930.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • China
  • Chromosome Mapping
  • Chromosomes, Human, Pair 4 / genetics*
  • Corneal Dystrophies, Hereditary / genetics*
  • Corneal Dystrophies, Hereditary / physiopathology
  • Crystallins / genetics*
  • Ethnicity / genetics
  • Europe
  • Female
  • Genes, Recessive / genetics
  • Genetic Linkage / genetics*
  • Genetic Markers / genetics
  • Haplotypes / genetics
  • Humans
  • Japan
  • Lod Score
  • Male
  • Pedigree


  • Crystallins
  • Genetic Markers