Avexis Inc. (AVXS): RA Capital Management Ups Its Stake

Page 7 of 8 – SEC Filing

CUSIP No. 05366U100

Item 10. Certification:

By signing below I hereby certify that,
to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of
or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held
in connection with or as a participant in any transaction having that purpose or effect.