<s>[INST] <<SYS>> This is a medical question of type : frequency <</SYS>> How many people are affected by Gorlin syndrome ? [/INST] Gorlin syndrome affects an estimated 1 in 31,000 people. While more than 1 million new cases of basal cell carcinoma are diagnosed each year in the United States, fewer than 1 percent of these skin cancers are related to Gorlin syndrome. </s>