Brachydactyly B1 (BDB1) [MIM:113000]: A form of brachydactyly. Brachydactyly defines a group of inherited malformations characterized by shortening of the digits due to abnormal development of the phalanges and/or the metacarpals. In brachydactyly type B1 the middle phalanges are short but in addition the terminal phalanges are rudimentary or absent. Both fingers and toes are affected. The thumbs and big toes are usually deformed. Symphalangism is also a feature. Note=The disease is caused by mutations affecting the gene represented in this entry.; Robinow syndrome autosomal recessive (RRS) [MIM:268310]: A recessive form of Robinow syndrome, a disease characterized by short-limb dwarfism, costovertebral segmentation defects and abnormalities of the head, face and external genitalia. The clinical signs are generally far more severe in recessive cases, particularly skeletal abnormalities. All patients with the recessive form suffer from vertebral segmentation abnormalities, resulting in scoliosis and chest deformities. Rib fusions are considered to be characteristic of the autosomal recessive form. Patients can also present brachydactyly, with extensive aplasia/hypoplasia of the phalanges and metacarpals/metatarsals, and brachy-syn-polydactyly of the hands and oligodactyly of the feet. {ECO:0000269|PubMed:10932186, ECO:0000269|PubMed:10932187}. Note=The disease is caused by mutations affecting the gene represented in this entry.