Teacher: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.
Teacher: Now, understand the problem? Solve this instance:  A hot spot for PTEN mutation in CD was identified in exon 5 that contains the PTPase core motif , with 13 of 30 ( 43 % ) CD mutations identified in this exon .
Student:
CD