SERPINA1 and early-onset cerebellar ataxia with retained tendon reflexes: In the case of EOCa, enhanced expression of α1-antichymotrypsin (ACT), clusterin (CLU), α1-antitrypsin (AAT) and its fragments (AATf), haptoglobin β-chain (HAP) as well as its cleaved fragments (HAPc) and leucine rich glycoprotein (LRG) was detected in serum samples of the cancer patients compared to control individuals.