In Hanup&;s disease ..... is excreted in the urine

Hanups disease is an autosomal recessive disease. Absorption of aromatic amino acids, as well as reabsorption from renal tubular, are defective. So amino acids are tryptophan excreted in urine.pellagra-like symptoms due to niacin derived from tryptophan. Diagnosis: ober Meyer test (based on aminoaciduria)Ref: DM Vasudevan - Textbook of Biochemistry for Medical Students, 7th edition, page no: 242