Creatine kinase isoenzyme BB: a lung cancer associated marker.
We investigated the diagnostic role of creatine kinase isoenzyme BB (CK-BB) in lung cancer. CK-BB was assayed using a radioimmunological system by saturation with Mallinchrodt double antibody 125I labelled (RIA Quant-CPK-BB). Sensitivity was 97% and specificity 90% in 44 cancers (T2-T3), in 36 non-cancers (chronic bronchitis) and in 48 healthy controls. Mean serum CK-BB values for patients with chronic bronchitis (2.64 +/- 1.1 ng/ml) were virtually the same as in normal subjects. Patients with lung cancer had markedly higher serum CK-BB values (9.17 +/- 2.6 ng/ml) than either the control group (healthy subjects) or the chronic bronchitis patients (p less than 0.01). These results lead us to suggest that CK-BB serum determination might prove useful in screening pulmonary disorders. However, further studies are essential to establish: 1) the relationship between serum levels of the isoenzyme and the histology and stage of the neoplastic disease; 2) the relation between CK-BB and the aggressive potential of the neoplastic clone.
Neri
B
B
Institute of Clinical Medicine IV Oncological Day-Hospital, Firenze, Italy.
Bartalucci
S
S
Gemelli
M T
MT
Tommasi
M
M
Bacalli
S
S
D000230:Adenocarcinoma / Q000175:diagnosis; D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000097:blood*; D001991:Bronchitis / Q000175:diagnosis; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis; D002908:Chronic Disease; D004796:Clinical Enzyme Tests; D003402:Creatine Kinase / Q000097:blood*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007527:Isoenzymes; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D011863:Radioimmunoassay
D014408:Biomarkers, Tumor; D007527:Isoenzymes; D003402:Creatine Kinase