Table 3 of Sundaresan, Mol Vis 2004; 10:1005-1010.


Table 3. TYR gene mutations in patients with Oculocutaneous albinism 1 (OCA1) in Indian families

This table describes two novel frameshift mutations and a known nonsense mutation in TYR gene in Indian OCA1 patients. The five exons of the TYR gene were sequenced for each individual using PCR followed by bi-directional sequencing, and the findings are shown.



                                          Allele 1            Allele 2
                                     -----------------   -----------------
                                             Mutation            Mutation
  OCA1                    Disease            Position            Position
Pedigrees    Individual    status    Exon   (cDNA/bp)    Exon   (cDNA/bp)      Genotypic status
----------   ----------   --------   ----   ----------   ----   ----------   ---------------------
Family I        1-1       Affected    2     c.937del8     5     c.1379del2   Compound heterozygote
                1-2       Normal      5     c.1379del2          Wild type    Carrier heterozygote
                1-3       Normal      2     c.937del8           Wild type    Carrier heterozygote
                1-4       Normal      2     Wild type     5     Wild type    Normal homozygote
                1-5       Normal      2     Wild type     5     Wild type    Normal homozygote
                1-6       Affected    2     c.937del8     5     c.1379del2   Compound heterozygote

Family II       2-1       Affected    5     c.1379del2    5     c.1379del2   Compound homozygote
                2-2       Normal      2     Wild type     5     Wild type    Normal homozygote
                2-3       Normal      5     c.1379del2          Wild type    Carrier heterozygote
                2-4       Normal      5     c.1379del2          Wild type    Carrier heterozygote

Family III      3-1       Affected    5     c.1379del2    5     c.1379del2   Affected homozygote
                3-2       Affected    5     c.1379del2    5     c.1379del2   Affected homozygote
                3-3       Normal      5     c.1379del2          Wild type    Carrier heterozygote
                3-4       Normal      5     c.1379del2          Wild type    Carrier heterozygote
                3-5       Normal      5     c.1379del2          Wild type    Carrier heterozygote
                3-6       Affected    5     c.1379del2    5     c.1379del2   Affected homozygote

Family IV       4-1       Affected    2     Arg278STOP    5     c.1379del2   Compound heterozygote
                4-2       Normal      2     Wild type     5     Wild type    Normal homozygote
                4-3       Affected    2     Arg278STOP    5     c.1379del2   Compound heterozygote
                4-4       Normal      5     c.1379del2          Wild type    Carrier heterozygote
                4-5       Normal      2     Arg278STOP          Wild type    Carrier heterozygote
                4-6       Normal      5     c.1379del2          Wild type    Carrier heterozygote

Sundaresan, Mol Vis 2004; 10:1005-1010 <http://www.molvis.org/molvis/v10/a119/>
©2004 Molecular Vision <http://www.molvis.org/molvis/>
ISSN 1090-0535