Focal dermal hypoplasia in a male

Area of Science:

• Genetics
• Developmental Biology
• Dermatology

Background:

• Focal dermal hypoplasia (FDH) is a rare mesoectodermal dysplasia.
• It presents with diverse defects affecting cutaneous, skeletal, dental, ocular, and soft tissues.
• An X-linked dominant inheritance pattern with male lethality is suggested, with few reported male cases.

Observation:

• This report focuses on a young boy diagnosed with FDH.
• The study investigates the specific presentation and genetic characteristics in this male patient.
• Particular attention is given to the mosaic pattern observed in the affected individual.

Findings:

• The study confirms the presence of mosaicism in a live-born affected male with FDH.
• Mosaic pattern of mutations in the PORCN gene was identified.
• This finding contributes to understanding the genetic basis of FDH in males.

Implications:

• Highlights the importance of recognizing mosaicism in male FDH cases.
• Provides valuable data for genetic counseling and understanding disease variability.
• Enhances knowledge of PORCN gene mutations in mesoectodermal dysplasias.