PMID- 9458099 OWN - NLM STAT- MEDLINE DCOM- 19980224 LR - 20231213 IS - 0008-5472 (Print) IS - 0008-5472 (Linking) VI - 58 IP - 3 DP - 1998 Feb 1 TI - Lewis and secretor gene dosages affect CA19-9 and DU-PAN-2 serum levels in normal individuals and colorectal cancer patients. PG - 512-8 AB - The effect of doses of the secretor (Se) and Lewis (Le) genes on the serum levels of CA19-9 and DU-PAN-2 was investigated in 400 normal individuals. It was clearly demonstrated that the Se gene dosage negatively affected both the CA19-9 and DU-PAN-2 values, whereas the Le gene dosage positively affected the CA19-9 value and negatively affected the DU-PAN-2 value. The 400 normal individuals were separated into nine groups by their Le and Se genotypes, as follows: group 1, Le/Le and se/se; group 2, Le/le and se/se; group 3, Le/Le and Se/se; group 4, Le/le and Se/se; group 5, Le/Le and Se/Se; group 6, Le/le and Se/Se; group 7, le/le and se/se; group 8, le/le and Se/se; and group 9, le/le and Se/Se. The group 1 individuals, having homozygous inactive Se alleles (se/se) and homozygous active Le alleles (Le/Le), exhibited the highest mean CA19-9 value. The CA19-9 value clearly ranged from a high in group 1 to a low in group 9. All of the Le-negative individuals who had the le/le genotype (groups 7, 8, and 9) had completely negative CA19-9 values, i.e., under 1.0 unit/ml, irrespective of the Se genotype. Group 7 individuals (le/le and se/se) showed a higher mean DU-PAN-2 value than did individuals in other groups. The Le-negative individuals in groups 8 and 9 also showed a higher mean DU-PAN-2 value than did the Le-positive individuals in groups 1-6. We recommend that the revised Le and Se genotype-dependent positive/negative cutoff values for CA19-9 and DU-PAN-2, determined in this study, be applied for more accurate cancer diagnoses. The Le and Se genotypes of 168 patients with colorectal cancer were also examined, and the CA19-9 and DU-PAN-2 values were measured before surgical resection. All 15 Le-negative patients (le/le) with colorectal cancer again showed undetectable CA19-9 values, i.e., under 1.0 unit/ml, but many of them exhibited highly positive DU-PAN-2 values. In contrast, many of the Le-positive patients (Le/Le or Le/le) had positive CA19-9 values, whereas very few of them exhibited positive DU-PAN-2 values. CA19-9 measurement is more useful than is DU-PAN-2 measurement for Le-positive patients, but it is not useful for Le-negative ones. DU-PAN-2 measurement should be performed in Le-negative patients for cancer diagnosis. FAU - Narimatsu, H AU - Narimatsu H AD - Division of Cell Biology, Institute of Life Science, Soka University, Hachioji, Toyko, Japan. hisashi@scc1.t.soka.ac.jp FAU - Iwasaki, H AU - Iwasaki H FAU - Nakayama, F AU - Nakayama F FAU - Ikehara, Y AU - Ikehara Y FAU - Kudo, T AU - Kudo T FAU - Nishihara, S AU - Nishihara S FAU - Sugano, K AU - Sugano K FAU - Okura, H AU - Okura H FAU - Fujita, S AU - Fujita S FAU - Hirohashi, S AU - Hirohashi S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (Antigens, Neoplasm) RN - 0 (Biomarkers, Tumor) RN - 0 (CA-19-9 Antigen) RN - 0 (DU-PAN-2 antigen, human) RN - 0 (Epitopes) RN - 0 (Neoplasm Proteins) RN - EC 2.4.1.- (Fucosyltransferases) RN - EC 2.4.1.65 (3-galactosyl-N-acetylglucosaminide 4-alpha-L-fucosyltransferase) SB - IM MH - Alleles MH - Antigens, Neoplasm/*blood/metabolism MH - Biomarkers, Tumor/*blood/metabolism MH - CA-19-9 Antigen/*blood/metabolism MH - Carbohydrate Sequence MH - Colorectal Neoplasms/*blood/genetics MH - Epitopes/genetics/metabolism MH - Fucosyltransferases/*genetics MH - Gene Dosage MH - Genotype MH - Glycosylation MH - Humans MH - Molecular Sequence Data MH - Neoplasm Proteins/*blood/metabolism MH - Phenotype MH - Protein Processing, Post-Translational/*genetics MH - Galactoside 2-alpha-L-fucosyltransferase EDAT- 1998/02/11 00:00 MHDA- 1998/02/11 00:01 CRDT- 1998/02/11 00:00 PHST- 1998/02/11 00:00 [pubmed] PHST- 1998/02/11 00:01 [medline] PHST- 1998/02/11 00:00 [entrez] PST - ppublish SO - Cancer Res. 1998 Feb 1;58(3):512-8.