226Waardenburg Syndrome (WS) (瓦登伯革氏症侯群)
227Waldenstrom's Macroglobulinemia (WM) (華氏巨頭蛋白血症)
228Walker-Warburg Syndrome (WWS) (Walker-Warburg綜合症)
229WDR45 (Genetic Disorder)
230Wells Syndrome (韋爾斯綜合症)
231West Syndrome-Infantile Spasms (韋氏症-嬰兒痙攣症)
232Williams Syndrome (WS) (威廉氏症候群)
233Wilson's Disease (WD) (威爾森氏症)
234Wolf-Hirschhorn Syndrome (WHS) (沃夫-賀許宏氏症候群)
235Wolfram Syndrome (Wolfram症候群)
236Worster-Drought Syndrome (WDS)
237WWOX Syndrome (Genetic Disorder)