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Sex bias is prevalent in skin research, with most studies lacking sex information or predominantly using male cells. Addressing these sex differences is crucial for advancing preclinical research and personalized medicine.

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Area of Science:

  • Dermatology
  • Preclinical Research
  • Sex Differences in Biology

Background:

  • The National Institutes of Health (NIH) recommends balanced use of male and female cells/animals in preclinical studies.
  • Existing literature suggests potential sex bias in scientific research, impacting generalizability of findings.
  • Understanding sex-specific biological differences is essential for advancing medical science.

Purpose of the Study:

  • To investigate the extent of sex bias in dermatological research.
  • To assess the reporting of sex information in skin research articles.
  • To determine the prevalence of comparative studies between male and female subjects in dermatology.

Main Methods:

  • A systematic survey of 802 dermatological research articles published between 2012 and 2013.
  • Analysis of reporting practices regarding the sex of cells and animals used in studies.
  • Quantification of studies that included sex as a variable or compared male and female subjects.

Main Results:

  • 60% of surveyed articles failed to report the sex of cells or animals.
  • Among studies specifying sex, 70% utilized male keratinocytes.
  • A significant lack of studies directly compared male versus female cells or animals.

Conclusions:

  • Prevalent sex bias exists in preclinical skin research, with underreporting and underutilization of female subjects.
  • Disclosure of sex and inclusion of comparative studies are vital for understanding sex-based biological differences.
  • Addressing sex-specific factors in preclinical research is critical for improving clinical trial design and enabling individualized therapies.