USUS·CBS NewsHer cancer seemed incurable until doctors identified a rare genetic conditionChemo and surgery failed to treat Diane Davis' advanced cancer. Things seemed hopeless until genetic testing found an unlikely culprit.Lean LNov 8Read at CBS News→USUS·CBS NewsHer cancer seemed incurable until doctors identified a rare genetic conditionChemo and surgery failed to treat Diane Davis' advanced cancer. Things seemed hopeless until genetic testing found an unlikely culprit.Lean LNov 8Read at CBS News→