Long-term Safety of BCX9930 in Subjects With Paroxysmal Nocturnal Hemoglobinuria

This study is designed to provide continued access to BCX9930 for subjects currently receiving treatment with BCX9930 in a BioCryst-sponsored clinical study for paroxysmal nocturnal hemoglobinuria (PNH) who, in the opinion of the investigator, would benefit from continued treatment with BCX9930 and who do not have access to other treatment options.

Inclusion Criteria:Male or non-pregnant, non-lactating female subjectsAre receiving treatment with BCX9930 in another clinical study of PNH and, in the opinion of the investigator, have benefited from treatment with BCX9930 and would benefit from continued treatment with BCX9930, and who do not have access to other treatment optionsExclusion Criteria:Any clinically significant medical or psychiatric condition including alcohol or drug dependency that, in the opinion of the investigator or sponsor, would interfere with the subject's ability to participate in the study or increase the risk of participation for that subjectAn ongoing adverse event, including a laboratory abnormality, or other unacceptable toxicity that, in the judgment of the investigator, compromises the ability of the subject to continue study-specific procedures or it is considered not to be in the subject's best interest to continue or benefit-risk assessment is no longer in favor of the subject's continued treatment