<unk>  has been associated with variants in the L1CAM gene which is an axonal glycoprotein that is essential for normal development of the central and peripheral nervous systems during the fetal period and postnatally. The symptoms are typically more intensive in males, due to the fact that males inherit only one X chromosome so a mutation in that one chromosome would cause the condition. Females are less likely to be affected because they have two X chromosomes. The prevalence is approximately 1 in 30,000 males. Fathers cannot pass the chromosomes to their sons, but only to their female offspring.
MASA syndrome
SUNCT syndrome
TAN syndrome
SAHA syndrome
Crome syndrome
Bogart–Bacall syndrome
Njølstad syndrome
TEMPI syndrome