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Correlation between clinical course and CEA levels during chemotherapy.

G Luporini, F Mangiarotti, P Fraschini

Bollettino Dell'Istituto Sieroterapico Milanese

|January 1, 1976

Summary

Carcinoembryonic antigen (CEA) levels correlate with clinical progress in gastroenteric tumors, especially during chemotherapy. Monitoring CEA aids in assessing treatment effectiveness and guiding therapeutic decisions for gastric and colorectal cancers.

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Area of Science:

Oncology
Clinical Chemistry

Background:

Assessing the correlation between Carcinoembryonic Antigen (CEA) levels and clinical outcomes in gastroenteric tumors is crucial, particularly during chemotherapy.
This study evaluated CEA assay results in 330 patients with gastric and colorectal neoplasms to understand its prognostic and monitoring value.

Observation:

CEA test positivity varied by tumor type, stage, and differentiation, being higher in colorectal compared to gastric neoplasms and in adenocarcinomas versus undifferentiated forms.
Left-sided colon tumors showed higher CEA positivity (66.6%) than right-sided forms (38%).
Post-radical surgery, 72% of patients normalized CEA levels.

Findings:

In patients undergoing radical surgery without chemotherapy, CEA levels closely correlated with clinical evolution in 98% of cases.

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For advanced neoplasms treated with chemotherapy, an 88% correlation was observed between CEA response and clinical response (p < 0.001).

Normalized CEA levels post-surgery indicate successful treatment.

Implications:

The CEA test is a valuable tool for monitoring the effectiveness of surgical and chemotherapeutic treatments in gastroenteric cancers.
CEA monitoring can inform decisions on adjusting or selecting more effective chemotherapeutic strategies.
Serial CEA assays can guide patient management and predict treatment outcomes.