Cancer drug erases fingerprints

A commonly-used cancer drug can make patients' fingerprints disappear, potentially causing problems for foreign travel, a doctor warns.

One patient was held by US immigration officials for four hours before they allowed him to enter the country. The patient's doctor, Eng-Huat Tan, from Singapore, advised all travellers to the US being treated with the drug capecitabine to carry a doctor's note.

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