First case of thanatophoric dysplasia type 1 in the Peruvian Andes with pathogenic variant in the FGFR3 gene

Thanatophoric dysplasia type 1 is a form of lethal skeletal dysplasia, characterized by axial-appendicular skeletal disproportions as well as short stature, frontal bossing, cloverleaf skull, narrow chest, femoral bowing, and micromelia. These phenotypic characteristics are the result of pathogenic variants in the fibroblast growth factor receptor 3 (FGFR-3) gene, located on chromosome 4p16.3 For its study, obstetric ultrasound, physical examination and radiographic findings are important. However, the diagnosis must be confirmed by genetic study in order to discover new variants or associations, as well as to reveal its actual casuistry in a certain region.