Possible cognates to Ugr.-Arb. *gVnVn- ‘heart, interior’ dealt with in SED I No. 83 are rather unreliable, so it is preferable to treat this lexemr as Arb-Ugr exclusive isogloss (Kogan 2015: 319)
Akkadian
gannu - part of the body of an animal
(CAD G 41, AHw. 280)