instruction:
In this task, you will be given a sentence. You need to reconize the name of the disorder or disease. Disease is a disorder of structure or function in a human, animal, or plant, especially one that produces specific symptoms or that affects a specific location and is not simply a direct result of physical injury. Although there might be several correct answers, you need to write one of them.
question:
 This indicates that there is a heavy ascertainment bias in the selection of patients for PAX6 mutation analysis and that the missing PAX6 missense mutations frequently may underlie phenotypes distinct from textbook aniridia .
answer:
aniridia


question:
 Pendred patients in three non - consanguineous families were shown to be compound heterozygotes for L236P and T416P .
answer:
Pendred


question:
 The molecular basis of C6 deficiency in the western Cape , South Africa .
answer:

C6 deficiency