190Waardenburg Syndrome (WS) (瓦登伯革氏症侯群)
191Walker-Warburg Syndrome (WWS) (Walker-Warburg綜合症)
192WDR45 (genetic disorder)
193Wells Syndrome (韋爾斯綜合症)
194West Syndrome-Infantile Spasms (韋氏症-嬰兒痙攣症)
195Williams Syndrome (WS) (威廉氏症候群)
196Wilson's Disease (WD) (威爾森氏症)
197Wolf–Hirschhorn Syndrome (WHS) (沃夫-賀許宏氏症候群)
198Wolfram Syndrome (Wolfram症候群)
199Worster-Drought Syndrome (WDS)
200WWOX Syndrome (Genetic Disorder)