As of 2015, there are approximately 70 known cases of<unk><unk> -Van-Laere syndrome worldwide. BVVL was first described in a Portuguese family, and has since been described in a number of ethnic groups. Reports have shown that BVVL infects females more than males at a rate of 5:1 respectively. However, males usually exhibit more severe symptoms, an earlier onset of deafness and a tendency to die earlier in life.
Brown–Vialetto–Van Laere syndrome
Nicolau–Balus syndrome
Nance–Horan syndrome
Dejerine–Sottas disease
Bart–Pumphrey syndrome
Temple–Baraitser syndrome
McGillivray syndrome
Bowen–Conradi syndrome