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research Familial Pure Hair–Nail Ectodermal Dysplasia in Yemen: A Father–Son Case Report with Clinical Correlation

January 2026 in “Journal of Clinical and Investigative Dermatology”

This case report describes a father with HOXC13-associated pure hair-nail ectodermal dysplasia, presenting with severe nail dystrophy affecting all digits and notable hypotrichosis or complete alopecia.

research Pure Hair‐Nail Ectodermal Dysplasia: Expanding the HOXC13 Genotypic Spectrum

February 2026 in “Pediatric Dermatology”

research Loss-of-Function Mutations in HOXC13 Cause Pure Hair and Nail Ectodermal Dysplasia

74 citations , October 2012 in “The American Journal of Human Genetics”

This study found that loss-of-function mutations in the HOXC13 gene cause autosomal-recessive pure hair and nail ectodermal dysplasia, emphasizing its role in hair and nail development.

research Mutations in the Keratin 85 (KRT85/hHb5) Gene Underlie Pure Hair and Nail Ectodermal Dysplasia

42 citations , October 2009 in “The journal of investigative dermatology/Journal of investigative dermatology”

In this study, researchers identified two distinct homozygous mutations in the KRT85 gene among consanguineous Pakistani families with pure hair and nail ectodermal dysplasia, highlighting variations in severity and potential impacts on the K85 protein function.

research A Homozygous Frameshift Mutation in theHOXC13Gene Underlies Pure Hair and Nail Ectodermal Dysplasia in a Syrian Family

30 citations , January 2013 in “Human Mutation”

This study identified a homozygous frameshift mutation in the HOXC13 gene associated with pure hair and nail ectodermal dysplasia in a consanguineous Syrian family, suggesting crucial roles for HOXC13 in hair and nail development.

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community The final nail in the coffin. PP405 is confirmed JXL069.

440 upvotes 1 month ago

PP405 and JXL069 are confirmed to be the same molecule, leading to disappointment due to poor hair regrowth results. Users express skepticism about the credibility of Pelage and the effectiveness of JXL069.

community Oral Biotin and Topical Minoxidil have a synergy effect in increasing hair growth, the study was only done in healthy subjects and it was only 14 days but it does prove that biotin can play a significant role as an adjunct treatment.

168 upvotes 1 year ago

Oral biotin combined with topical minoxidil may increase hair growth rate, though the study was limited to healthy subjects and did not measure hair density. Some users report personal benefits from biotin, such as faster nail growth and healthier hair, but concerns about acne and study quality were also mentioned.

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

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Hairo Fallas