Predictors of alpha-fetoprotein elevation in patients with chronic hepatitis C, but not hepatocellular carcinoma, and its normalization after pegylated interferon alfa 2a-ribavirin combination therapy.
OBJECTIVE
Elevated serum alpha-fetoprotein (AFP) levels are noted in patients with chronic hepatitis C (CHC) without hepatocellular carcinoma (HCC). The change in AFP levels after treatment with pegylated interferon and ribavirin (Peg-IFN/RBV) combination therapy is still unknown. The aim of this study was to investigate the predictors of elevated serum AFP in patients with CHC, and its change after Peg-IFN/RBV therapy.


METHODS
A total of 123 patients, intended to receive pegylated interferon alfa-2a plus ribavirin therapy, were enrolled. Eighty-three patients had complete treatment and received follow up for and additional 24 weeks. The factors that may affect the elevation of pretreatment AFP and the normalization of post-treatment AFP were determined.


RESULTS
The mean AFP level was 18.5 +/- 63.0 ng/mL (range, 1.3-676.0 ng/mL); 41 (33.3%) of the 123 patients had elevated serum AFP (more than 10 ng/mL) at baseline. A multivariate logistic regression analysis disclosed that older age (odds ratio [OR], 1.093; 95% confidence interval [CI], 1.015-1.177; P = 0.018), more advanced METAVIR fibrosis stage (OR, 5.237; 95% CI, 1.244-22.037; P = 0.024), a higher aspartate aminotransferase (AST) level (IU/L) (OR, 1.020; 95% CI, 1.008-1.033; P = 0.001), and lower platelet count (x10(9)/L, OR, 0.985; 95% CI, 0.968-0.994; P = 0.003) were independent determinants of pretreatment AFP elevation. After treatment, 72 of 83 (86.7%) cases were found to have normal post-treatment AFP levels (<10 ng/mL) at the end of follow up (EOF). Post-treatment negativity of the chronic hepatitis C virus (HCV)-RNA (OR, 10.014; 95% CI, 1.000-100.329; P = 0.050) and the post-treatment platelet count (x10(9)/L) (OR, 1.025; 95% CI, 1.001-1.050; P = 0.040) were associated with normal AFP at EOF. AFP progressively decreased with significant differences starting from the 12th week after treatment to the end of treatment, and was lowest at the EOF date for the sustained viral response (SVR) group. On the contrary, the non-SVR group did not have an AFP change during and after treatment.


CONCLUSIONS
Older age, low platelet count, higher AST levels, and advanced fibrosis predisposed chronic hepatitis C patients without HCC to have elevated serum AFP levels. After Peg-IFN/RBV combination therapy, a higher platelet count and HCV viral eradication were determinants of normal AFP at EOF. Serial AFP levels decreased after treatment, presenting in a time-dependent manner, specifically for the SVR group.
Chen
Tsung-Ming
TM
Division of Hepato-Gastroenterology, Department of Internal Medicine, Tungs' Taichung MetroHarbor Hospital, Taichung, Taiwan. reilybabybaby@yahoo.com.tw
Huang
Pi-Teh
PT
Tsai
Ming-Hung
MH
Lin
Lien-Fu
LF
Liu
Chung-Cheng
CC
Ho
Ka-Sic
KS
Siauw
Chuan-Pau
CP
Chao
Po-Liang
PL
Tung
Jai-Nien
JN
D000328:Adult; D000367:Age Factors; D000368:Aged; D000998:Antiviral Agents / Q000627:therapeutic use*; D001219:Aspartate Aminotransferases / Q000097:blood; D015415:Biomarkers / Q000097:blood; D006528:Carcinoma, Hepatocellular / Q000097:blood / Q000209:etiology*; D004359:Drug Therapy, Combination; D005260:Female; D005500:Follow-Up Studies; D016174:Hepacivirus / Q000187:drug effects* / Q000235:genetics; D019698:Hepatitis C, Chronic / Q000097:blood / Q000150:complications / Q000188:drug therapy* / Q000473:pathology; D006801:Humans; D000077190:Interferon alpha-2; D016898:Interferon-alpha / Q000627:therapeutic use*; D008103:Liver Cirrhosis / Q000209:etiology / Q000473:pathology; D008113:Liver Neoplasms / Q000097:blood / Q000209:etiology*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D010976:Platelet Count; D011092:Polyethylene Glycols / Q000627:therapeutic use*; D012367:RNA, Viral / Q000097:blood; D011994:Recombinant Proteins; D012189:Retrospective Studies; D012254:Ribavirin / Q000627:therapeutic use*; D012307:Risk Factors; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome; D015854:Up-Regulation; D019562:Viral Load; D000509:alpha-Fetoproteins / Q000378:metabolism*
D000998:Antiviral Agents; D015415:Biomarkers; D000077190:Interferon alpha-2; D016898:Interferon-alpha; D012367:RNA, Viral; D011994:Recombinant Proteins; D000509:alpha-Fetoproteins; D011092:Polyethylene Glycols; D012254:Ribavirin; D001219:Aspartate Aminotransferases; C100416:peginterferon alfa-2a