[Genetic analysis and prenatal diagnosis of a fetus with harlequin ichthyosis].

To carry out variant analysis for a fetus suspected with harlequin ichthyosis (HI).Whole exome sequencing (WES) was employed to detect potential variant in the fetus. Suspected variant was validated by Sanger sequencing.A homozygous missense variant c.6858delT (p.F2286fs) was detected in the fetus, for which both parents were heterozygous carriers. Pathological analysis confirmed the diagnosis of HI.The c.6858delT variant of the ABCA12 gene probably underlies the disease in the fetus.