D2I2.
genetic

Cystinosis

Cystinosis is a storage disease characterized by the abnormal accumulation of free cystine, the oxidized dimer of the amino acid cysteine in lysosomes, eventually leading to intracellular crystal formation throughout the body, e.g. in kidneys.

Underlined words are explained — tap any of them.

Plain-language summary adapted from Wikipedia. Not medical advice.