For neurotoxin:
"Melanoma outlook by stage
As with many other types of cancer, the outcome depends on how advanced your cancer is when it is diagnosed. In other words, the stage of your melanoma.
If melanoma is diagnosed early, the survival statistics are very good. Most stage 1 and stage 2 melanomas can be cured.
One of the main factors affecting survival for people with melanoma is the thickness of the tumour when it is diagnosed. (Thickness is part of the staging for melanoma, so you can read more about it on the melanoma stages page.) More than 9 out of 10 women (96%) diagnosed with melanoma that is thinner than 1.5mm, will be alive 5 years later. For men, the rate is slightly lower. Just over 9 out of 10 (91%) will be alive 5 years after being diagnosed".