Some limb malformations are known to be sporadic (non hereditary). For these malformations, no molecular cause was identified, even after whole genome sequencing. Methylation of CpG islands is an epigenetic process which is usually not transmitted to the descents. We hypothesize that sporadic limb malformations may be due to a methylation anomaly. This study will include patients with Amelia or Femur Fibula Ulna Syndrome. With patients consent, we will study the methylome on DNA samples already available in our laboratory. Each patient sample will be paired to a control of same tissue, age and sex. By bioinformatics comparison, we will identify differentially methylated candidate regions.
Study Type
OBSERVATIONAL
Enrollment
48
Epigenetic study : analysis of DNA methylation
Differentially Methylated Regions
Time frame: through study completion an average of 3 years
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