Hypotrichosis-Lymphedema-Telangiectasia Syndrome, also known as hlts, is related to hypotrichosis and hypotrichosis-lymphedema-telangiectasia-renal defect syndrome. An important gene associated with Hypotrichosis-Lymphedema-Telangiectasia Syndrome is SOX18 (SRY-Box Transcription Factor 18), and among its related pathways/superpathways are Embryonic and Induced Pluripotent Stem Cells and Lineage-specific Markers and Angiogenesis (CST). Affiliated tissues include skin and testis, and related phenotypes are sparse scalp hair and absent eyelashes