MPs to discuss controversial plan in special debate.
Insight into human behaviour allows development of programmes that help doctors diagnose rare diseases.
NORD patient advocacy group responds to Congress speech
SD-809 will be vital for Teva if approved.
Evaluate predicts sales could approach $8bn if approved.
Drug tops list compiled by Evaluate Pharma
More rare disease drugs must also be approved, says EURORDIS.
NHS will not fund Kanuma for rare disease LAL-D.