Hypomyelination with Brainstem and Spinal Cord Involvement and Leg Spasticity, also known as hypomyelination with brain stem and spinal cord involvement and leg spasticity, is related to spasticity and leukodystrophy. An important gene associated with Hypomyelination with Brainstem and Spinal Cord Involvement and Leg Spasticity is DARS1 (Aspartyl-TRNA Synthetase 1). Affiliated tissues include spinal cord and brain, and related phenotypes are babinski sign and lower limb spasticity