Mutanen da ke cikin haɗari da rigakafin trisomy 21 (Down syndrome)
- Yin ciki a tsufa. Mace za ta iya haifi ɗa mai ciwon Down yayin da ta tsufa. Kwai da tsofaffin mata ke haifarwa suna cikin haɗarin haifar da lahani a cikin rabon chromosomes. Don haka, yana da shekaru 21, yuwuwar samun ciki tare da ciwon Down shine 35 a 21. A 1, su 400 ne a 45.
- Bayan ta haifi yaro da ciwon Down syndrome a baya. Matar da ta haifi ɗa mai ciwon Down na da haɗarin 21% na samun wani yaro da ciwon Down.
- Kasance mai ɗaukar jigidar jujjuyawar Down syndrome. Yawancin lokuta na ciwon Down na haifar da hatsarin da ba a gado ba. Koyaya, ƙaramin adadin lokuta suna gabatar da haɗarin haɗarin dangi don nau'in trisomy 21 (translocation trisomy).