Analysis of family factors according to basic and specific (BASP) classification in Korean androgenetic alopecia patients : Multicenter study of the Korean Hair Research Society

  • Dr Won-Soo Lee, Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University Wonju College of Medicine, Korea
  • Dr Yoonseok Oh, Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University Wonju College of Medicine, Korea
  • Dr Jae Hong Ji, Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University Wonju College of Medicine, Korea

The purpose of this study was to investigate paternal and/or maternal genetic influences in each type of androgenetic alopecia (AGA) patients using the basic and specific (BASP) classification and to explore whether the morphology of AGA tends to be inheredited among family members.
1,220 Korean subjects, 998 males and 222 females, were classified according to the BASP classification at 13 university dermatologic centers. We evaluated AGA patients using a standard questionnaire and BASP classification sheet.
Parental influences on anterior hairline shape in men were predominantly from the paternal side, while these effects were less notable in women. In those who did not have any family history, statistical analysis showed a higher frequency for early onset AGA than late onset AGA. Basic types of hair loss were found to have a higher degree of inheritance from the paternal side of the family, regardless of specific type, for type M in men and type L in women.
In the process of examining family factors in AGA patients, BASP classification showed excellent reproducibility.