Phenotype: Colorectal cancer, hereditary nonpolyposis, type 2


OMIM: 609310
Inheritance: Autosomal dominant
Classification: Neoplasms

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MLH1 || c.731G>A

Gene/Locus:    MLH1
Dna Change:    c.731G>A
Protein Change:    p.Gly244Asp
Mutation Type:    Substitution
Mutation Effect:    Missense
Location:    exon 9
Transcript:    NM_000249.3

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
ItalyNAApulia region12 patients/3 familiesNALastella P et al., 2011Lastella P, Patruno M, Forte G, Montanaro A, Di Gregorio C, Sabbà C, Suppressa P, Piepoli A, Panza A, Andriulli A, Resta N, Stella A, . Identification and surveillance of 19 Lynch syndrome families in southern Italy: report of six novel germline mutations and a common founder mutation.. Fam. Cancer. 2011; 10(2):285-95

MLH1 || c.1731G>A

Gene/Locus:    MLH1
Dna Change:    c.1731G>A
Protein Change:    Loss of exon 15
Mutation Type:    Substitution
Mutation Effect:    Splice site
Location:    exon 15
Transcript:    NM_000249.3

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
ItalyNAApulia region2 patients/2 familiesNALastella P et al., 2011Lastella P, Patruno M, Forte G, Montanaro A, Di Gregorio C, Sabbà C, Suppressa P, Piepoli A, Panza A, Andriulli A, Resta N, Stella A, . Identification and surveillance of 19 Lynch syndrome families in southern Italy: report of six novel germline mutations and a common founder mutation.. Fam. Cancer. 2011; 10(2):285-95

MLH1 || c.1558+1G>T

Gene/Locus:    MLH1
Dna Change:    c.1558+1G>T
Protein Change:   
Mutation Type:    Substitution
Mutation Effect:    Silent mutation
Location:    intron 13
Transcript:    NM_000249.3

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
ItalyNAApulia region13 patients/2 familiesNALastella P et al., 2011Lastella P, Patruno M, Forte G, Montanaro A, Di Gregorio C, Sabbà C, Suppressa P, Piepoli A, Panza A, Andriulli A, Resta N, Stella A, . Identification and surveillance of 19 Lynch syndrome families in southern Italy: report of six novel germline mutations and a common founder mutation.. Fam. Cancer. 2011; 10(2):285-95

MLH1 || c.1831_1832delAT (c.1831delAT)

Gene/Locus:    MLH1
Dna Change:    c.1831_1832delAT (c.1831delAT)
Protein Change:    p.Ile611CysfsX2
Mutation Type:    Deletion
Mutation Effect:    Frameshift
Location:   
Transcript:    NM_000249.3

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
ItalyItalian-QuebecNA2 familiesNAThiffault I et al., 2004Thiffault I, Foulkes WD, Marcus VA, Farber D, Kasprzak L, MacNamara E, Wong N, Hutter P, Radice P, Bertario L, Chong G, . Putative common origin of two MLH1 mutations in Italian-Quebec hereditary non-polyposis colorectal cancer families.. Clin. Genet.. 2004; 66(2):137-43

MLH1 || c.545+3A>G (IVS6+3A>G)

Gene/Locus:    MLH1
Dna Change:    c.545+3A>G (IVS6+3A>G)
Protein Change:   
Mutation Type:    Substitution
Mutation Effect:    Splice site
Location:    intron 6
Transcript:    NM_000249.3

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
ItalyItalian-QuebecNA2 familiesNAThiffault I et al., 2004Thiffault I, Foulkes WD, Marcus VA, Farber D, Kasprzak L, MacNamara E, Wong N, Hutter P, Radice P, Bertario L, Chong G, . Putative common origin of two MLH1 mutations in Italian-Quebec hereditary non-polyposis colorectal cancer families.. Clin. Genet.. 2004; 66(2):137-43

MLH1 || c.2269_2270insT

Gene/Locus:    MLH1
Dna Change:    c.2269_2270insT
Protein Change:    p.*757LeuextX33
Mutation Type:    Insertion
Mutation Effect:    Frameshift
Location:    UTR 3 prime
Transcript:    NM_000249.3

PopulationEthnic GroupRegionMutation FrquencyCoalescence TimeReference
ItalyNANorthern NANACaluseriu O et al., 2004Caluseriu O, Di Gregorio C, Lucci-Cordisco E, Santarosa M, Trojan J, Brieger A, Benatti P, Pedroni M, Colibazzi T, Bellacosa A, Neri G, Ponz de Leon M, Viel A, Genuardi M, . A founder MLH1 mutation in families from the districts of Modena and Reggio-Emilia in northern Italy with hereditary non-polyposis colorectal cancer associated with protein elongation and instability.. J. Med. Genet.. 2004; 41(3):e34

References

Caluseriu O, Di Gregorio C, Lucci-Cordisco E, Santarosa M, Trojan J, Brieger A, Benatti P, Pedroni M, Colibazzi T, Bellacosa A, Neri G, Ponz de Leon M, Viel A, Genuardi M, A founder MLH1 mutation in families from the districts of Modena and Reggio-Emilia in northern Italy with hereditary non-polyposis colorectal cancer associated with protein elongation and instability.J. Med. Genet.. 2004; 41(3):e34

Lastella P, Patruno M, Forte G, Montanaro A, Di Gregorio C, Sabbà C, Suppressa P, Piepoli A, Panza A, Andriulli A, Resta N, Stella A, Identification and surveillance of 19 Lynch syndrome families in southern Italy: report of six novel germline mutations and a common founder mutation.Fam. Cancer. 2011; 10(2):285-95

Thiffault I, Foulkes WD, Marcus VA, Farber D, Kasprzak L, MacNamara E, Wong N, Hutter P, Radice P, Bertario L, Chong G, Putative common origin of two MLH1 mutations in Italian-Quebec hereditary non-polyposis colorectal cancer families.Clin. Genet.. 2004; 66(2):137-43