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1 HEXA gene hexosaminidase subunit alpha Normal Function The HEXA subunitsubunit betahexosaminidase A Specifically the protein produced from the HEXA gene forms the alpha subunit of this enzyme. 1RARA generetinoic acid receptor alphaNormal FunctionThe RARA gene provides instructions for making a transcription factor called the retinoic acid receptor alpha RARa A transcription factor is a prot 1 Ankylosing spondylitis Description Ankylosing spondylitis is a form of painful, ongoing joint inflammation (chronic inflammatory arthritis) that primarily affects the spine. Early symptoms of anky 1 Chronic myeloid leukemia Description Chronic myeloid leukemia is a slow-growing cancer of the blood-forming tissue (bone erythrocyteserythrocytes leukocytesleukocytes( thrombocytes) that are involv 1 Alpers-Huttenlocher syndrome Description Alpers-Huttenlocher syndrome is one of the most severe of a group of conditions called the POLG -related disorders. The conditions in this group feature a 1 Isolated Duane retraction syndrome Description Isolated Duane retraction syndrome is a disorder of eye movement. This condition toward the eartoward the ear toward the nosetoward the nose retractsr 1 Dupuytren contracture Description Dupuytren contracture is characterized by a deformity of the hand in which the joints of extendedextended flexedflexed supports the body's muscles, joints, organs, 1 Early-onset isolated dystonia Description Early-onset isolated dystonia is one of many forms of dystonia, which is a group of muscle contractionsmuscle contractions tremorstremors other uncontrolle 1 EGFR gene epidermal growth factor receptor Normal Function The EGFR gene provides instructions for making a receptor protein called the epidermal growth factor receptor, which spans the cell memb 1 Ellis-van Creveld syndrome Description Ellis-van Creveld syndrome is an inherited disorder of bone growth that results in very dwarfismdwarfism lower legs and a narrow chest with short ribs. Ellis- 1 Autosomal dominant partial epilepsy with auditory features Description ADPEAFADPEAF form of epilepsy that runs in families. This disorder causes seizures usually auditoryauditory ringing. Some peop 1 Essential tremor Description Essential tremor is a movement disorder that causes involuntary, rhythmic shaking ( tremor), especially in the hands. It is distinguished from tremor that results from o 1 Parkinson disease Description Parkinson disease is a progressive disorder of the nervous system. The disorder affects several regions of the brain, especially an area called the substantia nigra th 1 Primary familial brain calcification Description Primary familial brain calcification is a condition characterized by abnormal deposits of calcificationcalcification visible only on medical imaging 1 Pantothenate kinase-associated neurodegeneration Description Pantothenate kinase-associated neurodegeneration (formerly called Hallervorden-Spatz syndrome) is a disorder of the nervous system. This