PartnerRe Ltd., the reinsurer that agreed to combine with Axis Capital Holdings Ltd., said it would refuse to answer questions on its first-quarter earnings call about the unsolicited $6.4 billion buyout offer from EXOR SpA.

PartnerRe’s board is evaluating the cash offer and will complete its review in “due course,” Robin Sidders of the investor-relations operation, said in the call Tuesday. “Given that the review process is ongoing, and the purpose of today’s call is to discuss our financial results, we will not be taking any questions at the conclusion of the prepared remarks as we cannot comment further on this matter at this time.”