D2I2.
genetic

Hermansky–Pudlak syndrome

Heřmanský–Pudlák is an extremely rare disorder which results in oculocutaneous albinism, bleeding problems due to a platelet abnormality, and storage of an abnormal fat- compound. It is thought to affect around 1 in 500,000 people worldwide, with a significantly higher occurrence in Puerto Ricans, with a of 1 in 1800. Many of the research studies on the disease have been conducted in Puerto Rico.

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