exhibit 10. 7 certain confidential portions of this exhibit were omitted and replaced with “ [ * * * ] ”. a complete version of this exhibit has been filed separately with the secretary of the securities and exchange commission pursuant to an application requesting confidential treatment pursuant to rule 406 promulgated under the securities act of 1933, as amended. exclusive license agreement 1. parties 1. parties 1. 1 dr stefan karlsson personal id. no [ * * * ] and maria dahl personal id. no [ * * * ] ( the “ original rights holders ” ) together with any and all postdocs or other researchers adhering to this agreement in accordance with section 10 ( collectively referred to as the “ rights holders ”, and each being a “ rights holder ” ). 1. 1 dr stefan karlsson personal id. no [ * * * ] and maria dahl personal id. no [ * * * ] ( the “ original rights holders ” ) together with any and all postdocs or other researchers adhering to this agreement in accordance with section 10 ( collectively referred to as the “ rights holders ”, and each being a “ rights holder ” ). 1. 2 avrob10, inc., a delaware corporation in the usa, with an address of 400 technology square, 10th floor, cambridge, ma 02139 ; ( “ avrobio ” ) 1. 2 avrob10, inc., a delaware corporation in the usa, with an address of 400 technology square, 10th floor, cambridge, ma 02139 ; ( “ avrobio ” ) 1. 3 all of the rights holders, on the one hand, and avrobio, on the other hand, are also referred to each as a “ party ”, and together as the “ parties ”. 1. 3 all of the rights holders, on the one hand, and avrobio, on the other hand, are also referred to each as a “ party ”, and together as the “ parties ”. 1. 4 notwithstanding section 1. 3, an obligation or right under this agreement ( except confidentiality obligations ) for a rights holder relating to specific rights shall apply to a given rights holder only if and to the extent that the relevant rights holder has a legal interest in and to ( in whole or in part ) such rights. each rights holder is liable for his / her own obligations under this agreement and, except to the extent expressly provided in section 5. 2 and section