This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CNS Tumors, Subject name: Surgery
All of the following hereditary conditions predispose to CNS tumors, except: 
Select and explain. 
A. Neurofibromatosis 1 and 2, B. Tuberous sclerosis, C. Von - Hippel - landau syndrome, D. Xeroderma pigmentosum
D: Xeroderma pigmentosum
Answer: D: Xeroderma pigmentosum 
Explanation: Xeroderma pigmentosum is not a risk factor for brain tumor. Genetic abnormalities associated with brain tumors (RL not in MTV GT) RetinoblastomaQ Li-FraumeniQ NF-1 & 2Q MEN 1Q Turcot's syndromeQ VHL syndromeQ Gorlin syndromeQ Tuberous sclerosisQ