Spinal Muscular Atrophy with Lower Extremity Predominant, also known as spinal muscular atrophy with lower extremity predominance, is related to spinal muscular atrophy with lower extremity predominant 1 and arthrogryposis syndrome. An important gene associated with Spinal Muscular Atrophy with Lower Extremity Predominant is BICD2 (BICD Cargo Adaptor 2), and among its related pathways/superpathways are Vesicle-mediated transport and Golgi-to-ER retrograde transport. Affiliated tissues include skeletal muscle and brain, and related phenotypes are nervous system and behavior/neurological