Abstract
BACKGROUND: Findings from in vitro studies suggest that increased exposure to thyroid hormones can influence progression of ovarian tumours. However, epidemiologic evidence on this topic is limited.
METHODS: We pooled data from 11 studies from the Ovarian Cancer Association Consortium. Using multivariate Cox proportional hazards models, we estimated associations between hyper- and hypothyroidism and medications prescribed for these conditions with 5-year all-cause survival among women diagnosed with invasive ovarian cancer.
RESULTS: Overall, there was a nonsignificant association with history of hyperthyroidism (n=160 cases) and mortality (HR=1.22; 95% CI=0.97-1.53). Furthermore, diagnosis of hyperthyroidism within the 5 years before ovarian cancer diagnosis was associated with an increased risk of death (HR=1.94; 95% CI=1.19-3.18). A more modest association was observed with history of hypothyroidism (n=624 cases) and mortality (HR=1.16; 95% CI=1.03-1.31). Neither duration of hypothyroidism nor use of thyroid medications was associated with survival.
CONCLUSIONS: In this large study of women with ovarian cancer, we found that recent history of hyperthyroidism and overall history of hypothyroidism were associated with worse 5-year survival.
Original language | English |
---|---|
Journal | B J C |
Volume | 117 |
Issue number | 7 |
Pages (from-to) | 1063-1069 |
ISSN | 0007-0920 |
DOIs | |
Publication status | Published - 26 Sept 2017 |
Keywords
- Aged
- Female
- Humans
- Hyperthyroidism/drug therapy
- Hypothyroidism/drug therapy
- Middle Aged
- Ovarian Neoplasms/mortality
- Proportional Hazards Models
- Survival Rate
- Time Factors