TY - JOUR
T1 - Family history of thyroid cancer and the risk of differentiated thyroid cancer in French Polynesia
AU - Brindel, Pauline
AU - Doyon, Françoise
AU - Bourgain, Catherine
AU - Rachédi, Frédérique
AU - Boissin, Jean Louis
AU - Sebbag, Joseph
AU - Shan, Larrys
AU - Bost-Bezeaud, Frédérique
AU - Petitdidier, Patrice
AU - Paoaafaite, John
AU - Teuri, Joseph
AU - De Vathaire, Florent
PY - 2010/4/1
Y1 - 2010/4/1
N2 - Background: Differentiated thyroid carcinoma is considered to be the nonhereditary cancer for which familial inheritance is the highest. To date, no familial aggregation analysis of this cancer has been performed in Maohi populations, which exhibit a very high incidence rate. Therefore, we evaluate the risk of differentiated thyroid cancer associated with a family history of thyroid cancer in natives of French Polynesia. Methods: We investigated thyroid cancer incidence in the first-degree relatives of 225 cases of differentiated thyroid carcinomas diagnosed between 1979 and 2004 in patients born in French Polynesia, and 368 randomly selected population controls matched for sex and age, born and residing in French Polynesia. All but five thyroid cancers declared among relatives were validated. Results: Twenty-four cases declared a family history of thyroid cancer, when compared with 11 controls. Individuals with an affected first-degree relative had a 4.5-fold (95% confidence interval [CI], 1.9-10.6) increased risk of differentiated thyroid cancer. This odds ratio (OR) was not significantly higher when a male first-degree relative was affected (OR, 10.0; 95% CI, 1.3-74.8) compared with a female (OR, 4.0; 95% CI, 1.5-10.3) and was not different for patients who had a nonaggressive thyroid microcarcinoma (OR, 3.5; 95% CI, 0.6-16.4) than those who had a larger cancer (OR, 6.0; 95% CI, 1.8-20.5). This OR was borderline significantly (p, 0.07) higher in Maohis (OR, 11.0; 95% CI, 2.4-48.8) than in individuals of mixed origin (OR, 2.1; 95% CI, 0.8-5.9). Conclusion: Our study shows that the familial inheritance of differentiated thyroid cancer is particularly high in Maohi populations.
AB - Background: Differentiated thyroid carcinoma is considered to be the nonhereditary cancer for which familial inheritance is the highest. To date, no familial aggregation analysis of this cancer has been performed in Maohi populations, which exhibit a very high incidence rate. Therefore, we evaluate the risk of differentiated thyroid cancer associated with a family history of thyroid cancer in natives of French Polynesia. Methods: We investigated thyroid cancer incidence in the first-degree relatives of 225 cases of differentiated thyroid carcinomas diagnosed between 1979 and 2004 in patients born in French Polynesia, and 368 randomly selected population controls matched for sex and age, born and residing in French Polynesia. All but five thyroid cancers declared among relatives were validated. Results: Twenty-four cases declared a family history of thyroid cancer, when compared with 11 controls. Individuals with an affected first-degree relative had a 4.5-fold (95% confidence interval [CI], 1.9-10.6) increased risk of differentiated thyroid cancer. This odds ratio (OR) was not significantly higher when a male first-degree relative was affected (OR, 10.0; 95% CI, 1.3-74.8) compared with a female (OR, 4.0; 95% CI, 1.5-10.3) and was not different for patients who had a nonaggressive thyroid microcarcinoma (OR, 3.5; 95% CI, 0.6-16.4) than those who had a larger cancer (OR, 6.0; 95% CI, 1.8-20.5). This OR was borderline significantly (p, 0.07) higher in Maohis (OR, 11.0; 95% CI, 2.4-48.8) than in individuals of mixed origin (OR, 2.1; 95% CI, 0.8-5.9). Conclusion: Our study shows that the familial inheritance of differentiated thyroid cancer is particularly high in Maohi populations.
UR - http://www.scopus.com/inward/record.url?scp=77952407075&partnerID=8YFLogxK
U2 - 10.1089/thy.2009.0350
DO - 10.1089/thy.2009.0350
M3 - Article
C2 - 20373983
AN - SCOPUS:77952407075
SN - 1050-7256
VL - 20
SP - 393
EP - 400
JO - Thyroid
JF - Thyroid
IS - 4
ER -