Q. A 33-year-old Afghan man comes to the clinic because of multiple growths over his head and cheeks. The patient noticed the growth for the past two years. He has a history of episodic seizures during his childhood. His father died because of renal disease at the age of 48. His vital signs are normal. On clinical examination, there are hypopigmented nodules over his back, and flesh-colored papules around his nails. If you know that there is a mutation in a gene that encodes a protein called hamartin, what is the most likely diagnosis?