Many neurologists in australia are claiming tysabri (natalizumab) (for ms) is safe during pregnancy due to new research and studies. what are your opinions?

NOT FULLY KNOWN: Pregnancy recommendations for virtually all ms drugs but one (copaxone), suggest discontinuation of the medicine prior to becoming pregnant due to risk of possible miscarriage or fetal malformation. Certainly possible that drugs in the c and lower categories could be risky, but more often than not, normal babies are the outcome. Yet, i would not declare tysabri (natalizumab) safe for pregnancy, at this time.