The gene responsible for familial hypocalciuric hypercalcemia maps to chromosome 3q in four unrelated families

Nat Genet. 1992 Jul;1(4):295-300. doi: 10.1038/ng0792-295.


Familial hypocalciuric hypercalcemia (FHH) is an autosomal dominant syndrome of unknown aetiology characterized by lifelong elevation in serum calcium concentration and low urinary calcium excretion. These features suggest that the causal gene is important for maintenance of extracellular calcium homeostasis by the parathyroid gland and kidney. To identify the chromosomal location of FHH gene(s), we clinically evaluated 114 individuals in four unrelated affected families and performed linkage analyses. The disease gene mapped to the long arm of chromosome 3 in each family (combined maximum multipoint lod score = 20.67). We suggest that this is the predominant FHH locus and anticipate that identification of the FHH gene will improve our understanding of the molecular basis for physiologic and pathologic regulation of calcium.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Base Sequence
  • Calcium / blood
  • Calcium / metabolism*
  • Calcium / urine
  • Chromosome Banding
  • Chromosome Mapping
  • Chromosomes, Human, Pair 3*
  • DNA / blood
  • DNA / genetics
  • DNA / isolation & purification
  • DNA Probes
  • Female
  • Genetic Linkage*
  • Humans
  • Lod Score
  • Male
  • Metal Metabolism, Inborn Errors / genetics*
  • Molecular Sequence Data
  • Oligodeoxyribonucleotides
  • Pedigree
  • Polymerase Chain Reaction / methods
  • Polymorphism, Genetic


  • DNA Probes
  • Oligodeoxyribonucleotides
  • DNA
  • Calcium