KnowraHomocystinuriaLinked fromLinked fromThe 5 pages that link to Homocystinuria, each with the reason it gives.All 5Broader topic 2Related 2Compared with 1Marfan syndromeCompared with: It can mimic Marfan syndrome, while lens displacement often differs in direction and systemic clues.MethionineBroader topic: Defects in methionine-pathway enzymes can cause homocystinuria.PyridoxineRelated: Some affected people respond to high-dose pyridoxine through improved enzyme function.HomocysteineBroader topic: Severe elevations can signal an inherited defect in homocysteine metabolism.Ectopia lentisRelated: It can weaken zonular support and displace the lens, often downward and inward.