Homozygosity mapping of the gene for alkaptonuria to chromosome 3q2

Martin R. Pollak, Yah Huei Wu Chou, James J. Cerda, Beat Steinmann, Bert N. La Du, J. G. Seidman, Christine E. Seidman*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

116 Scopus citations


Alkaptonuria, the first human disorder recognized by Garrod as an inborn error of metabolism, is a rare recessive condition that darkens urine and causes a debilitating arthritis termed ochronosis. We have studied two families with consanguineous parents and four affected children in order to map the gene responsible for alkaptonuria. Coinheritance of either neonatal severe hyperparathyroidism or sucrase isomaltase deficiency and alkaptonuria provided a candidate location for the mutated genes on chromosome 3. Homozygosity mapping with polymorphic loci identified a 16 centiMorgan region on chromosome 3q2 that contains the alkaptonuria gene. Analysis of two additional nonconsanguineous families supports linkage of alkaptonuria to this single locus (combined lod score = 4.3, = 0).

Original languageEnglish
Pages (from-to)201-204
Number of pages4
JournalNature Genetics
Issue number2
StatePublished - 10 1993
Externally publishedYes


Dive into the research topics of 'Homozygosity mapping of the gene for alkaptonuria to chromosome 3q2'. Together they form a unique fingerprint.

Cite this