Linkage of G8 (D4S10) in two Swedish families with Huntington's disease
Autor: | Bengt Winblad, Maria Anvret, Conneally M, Hobbs W, Gösta Holmgren, Almqvist Ew, Jan Wahlström, Bengt Mattsson, James F. Gusella |
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Rok vydání: | 2008 |
Předmět: |
Male
Sweden Linkage (software) Genetics Genetic Linkage Haplotype Disease Biology medicine.disease Asymptomatic Huntington Disease Haplotypes Huntington's disease Predictive Value of Tests Polymorphism (computer science) Genetic marker medicine Humans Female Lod Score medicine.symptom Genetics (clinical) Lod score |
Zdroj: | Clinical Genetics. 32:289-294 |
ISSN: | 1399-0004 0009-9163 |
Popis: | Two Swedish families with Huntington's disease (HD) have been investigated for linkage with G8 (D4S10). In one family from northern Sweden (Family 1) 48 family members were examined, and in another family from the southwestern part of Sweden (Family 2) 14 family members were examined. The lod scores were 1.531 for Family 1 and 2.057 for Family 2, and the combined lod score was 3.59. The HD gene was segregating with the haplotype C in Family 1 and with haplotype A in Family 2. The predictive value of the test was obvious. Before the testing with the G8 probe, 84.2% of the family members in Family 1 had a theoretical risk of 25% or 50% of having the HD gene. After the testing with the G8 probe, only 23.7% of the family members remained at the same risk, and it could also be certified that 63.2% had no or little risk of having the HD gene. Only one asymptomatic person was predicted to have HD. |
Databáze: | OpenAIRE |
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