243Waardenburg Syndrome (WS) (瓦登伯革氏症侯群)
244Waldenstrom's Macroglobulinemia (WM) (華氏巨頭蛋白血症)
245Walker-Warburg Syndrome (WWS) (Walker-Warburg綜合症)
246WDR45 (Genetic Disorder)
247Wells Syndrome (韋爾斯綜合症)
248West Syndrome-Infantile Spasms (韋氏症-嬰兒痙攣症)
249Williams Syndrome (WS) (威廉氏症候群)
250Wilson's Disease (WD) (威爾遜氏症)
251Wolf-Hirschhorn Syndrome (WHS) (沃夫-賀許宏氏症候群)
252Wolfram Syndrome (Wolfram症候群)
253Worster-Drought Syndrome (WDS)
254WWOX Syndrome (Genetic Disorder)