Irish Journal of Medical Science (1971 -)

, Volume 187, Issue 4, pp 895–899 | Cite as

A meta-analysis of consanguinity and breast cancer

  • John B. WildEmail author
  • Mei-Ju Hwang
  • Gabriela Jones
Review Article



There have been various publications stating that consanguinity both increases and decreases the risk of breast cancer.


The objective of this study was to determine the impact of consanguinity upon breast cancer. We conducted a systematic review of the literature and meta-analysis.


Eligible studies were identified on Medline and EMBASE updated to the 19 of September 2017. Studies with sufficient comparative data were included in a meta-analysis. Analyses were carried out using RevMan software.


Three comparative studies with a total of 317 individuals with breast cancer and 1459 controls. Reviewing the literature demonstrated conflicting conclusions of the influence of consanguinity upon breast cancer. The meta-analysis showed that there were no statistically significant associations between consanguinity and breast cancer though there was a trend protection from a history of consanguinity.


Though there is limited literature published on the effects of parental consanguinity, the available data does not demonstrate that it is a risk factor for breast cancer.


Breast cancer Consanguinity Inbreeding Incest Risk 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain any studies with human participants performed by any of the authors.

Informed consent

Informed consent was not required for this study.


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Copyright information

© Royal Academy of Medicine in Ireland 2018
corrected publication April 2018

Authors and Affiliations

  1. 1.Department of Breast Surgery Worcester Royal HospitalWorcestershireUK
  2. 2.Department of Breast Surgery Birmingham City HospitalBirminghamUK
  3. 3.Department of Clinical GeneticsNottingham City HospitalNottinghamUK

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