European journal of cancer (Oxford, England : 1990) · 2017
Menopausal hormone therapy and cancer risk: An overestimated risk?
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Simin Johanna, Tamimi Rulla, Lagergren Jesper, Adami Hans-Olov, Brusselaers Nele
Аннотация
AIM: We aimed to assess the overall cancer risk among contemporary menopausal hormone therapy (MHT) users in Sweden and the risk for different cancer types.
METHODS: A nationwide Swedish population-based cohort study including all 290,186 women aged ≥ 40 years having used systemic MHT during the study period (July 2005 and December 2012), compared with the Swedish female background population. MHT ever-use (all MHT, oestrogen-only MHT [E-MHT] and oestrogen plus progestin MHT [EP-MHT]) was based on the nationwide Prescribed Drug Registry. Cancer diagnoses were grouped into 16 different anatomical locations, for which standardised incidence ratios (SIRs) and 95% confidence intervals (CIs) were calculated.
RESULTS: The SIR of any cancer was 1.09 (95% CI: 1.07-1.11) following ever MHT, 1.04 (95% CI: 1.01-1.06) for E-MHT and 1.14 (95% CI: 1.12-1.17) for EP-MHT. The highest SIR was found for EP-MHT among users aged ≥70 years (SIR = 1.33, 95% CI: 1.26-1.40). The risk for invasive breast, endometrial or ovarian cancer combined was increased for any MHT (SIR = 1.31, 95% CI: 1.28-1.34). The risk of invasive breast cancer was increased following MHT and increased with age for EP-MHT users. The risk of gastrointestinal cancers combined was decreased (SIR = 0.90, 95% CI: 0.86-0.94), particularly the oesophagus (SIR = 0.81, 95% CI: 0.64-1.00), liver (SIR = 0.81, 95% CI: 0.65-0.99) and colon (SIR = 0.90, 95% CI: 0.84-0.95).
CONCLUSIONS: MHT, notably EP-MHT, was associated with a limited increase in overall cancer risk. The increased risk of female reproductive organ cancers was almost balanced by a decreased risk of gastrointestinal cancers.
METHODS: A nationwide Swedish population-based cohort study including all 290,186 women aged ≥ 40 years having used systemic MHT during the study period (July 2005 and December 2012), compared with the Swedish female background population. MHT ever-use (all MHT, oestrogen-only MHT [E-MHT] and oestrogen plus progestin MHT [EP-MHT]) was based on the nationwide Prescribed Drug Registry. Cancer diagnoses were grouped into 16 different anatomical locations, for which standardised incidence ratios (SIRs) and 95% confidence intervals (CIs) were calculated.
RESULTS: The SIR of any cancer was 1.09 (95% CI: 1.07-1.11) following ever MHT, 1.04 (95% CI: 1.01-1.06) for E-MHT and 1.14 (95% CI: 1.12-1.17) for EP-MHT. The highest SIR was found for EP-MHT among users aged ≥70 years (SIR = 1.33, 95% CI: 1.26-1.40). The risk for invasive breast, endometrial or ovarian cancer combined was increased for any MHT (SIR = 1.31, 95% CI: 1.28-1.34). The risk of invasive breast cancer was increased following MHT and increased with age for EP-MHT users. The risk of gastrointestinal cancers combined was decreased (SIR = 0.90, 95% CI: 0.86-0.94), particularly the oesophagus (SIR = 0.81, 95% CI: 0.64-1.00), liver (SIR = 0.81, 95% CI: 0.65-0.99) and colon (SIR = 0.90, 95% CI: 0.84-0.95).
CONCLUSIONS: MHT, notably EP-MHT, was associated with a limited increase in overall cancer risk. The increased risk of female reproductive organ cancers was almost balanced by a decreased risk of gastrointestinal cancers.
Предметные рубрики MeSH
AdultAgedBreast NeoplasmsDigestive System NeoplasmsDrug Administration ScheduleDrug CompoundingEndometrial NeoplasmsEstrogen Replacement TherapyEstrogensFemaleHumansIncidenceMenopauseMiddle AgedNeoplasmsOvarian NeoplasmsProgestinsProtective FactorsRegistriesRisk AssessmentRisk FactorsSwedenTime Factors