LBR and primary biliary cholangitis: We identified autoantibodies for LBR or lamins A, B and C, in 14 (36%) of those sera, whereas we have not detected anti-p62 autoantibodies in our PBC sera by immunoprecipitation, although p62 was effectively recognized in the material extracted from rat nuclear envelopes and precipitated using monoclonal anti-p62 antibodies.