Acromesomelic Dysplasia 2a, also known as chondrodysplasia, grebe type, is related to acromesomelic dysplasia 1 and acromesomelic dysplasia 2c. An important gene associated with Acromesomelic Dysplasia 2a is GDF5 (Growth Differentiation Factor 5), and among its related pathways/superpathways are ERK Signaling and Human Embryonic Stem Cell Pluripotency. Affiliated tissues include bone and skin, and related phenotypes are skeletal dysplasia and bowing of the long bones