label: achondrogenesis type IA
label_lc: achondrogenesis type ia
description: "Achondrogenesis type 1A (ACG1A), a form of achondrogenesis, is a very rare, lethal skeletal dysplasia characterized by dwarfism with extremely short limbs, narrow chest, short ribs that are easily fractured, soft skull bones and distinctive histological features of the cartilage."