Tumor markers for cancer detection. I

Area of Science:

• Oncology
• Biochemistry
• Medical Diagnostics

Background:

• Serum markers are widely used in cancer management.
• Their utility in screening asymptomatic populations remains debated.
• Previous studies have questioned the effectiveness of serum markers for early cancer detection.

Purpose of the Study:

• To evaluate the effectiveness of serum marker determinations for cancer detection in a healthy population.
• To identify individuals at high risk for harboring early-stage cancer.
• To assess the role of specific serum markers in cancer screening protocols.

Main Methods:

• A prospective study of 1,611 supposedly healthy subjects over 1-5 years.
• Analysis included serum markers: CEA, AFP, HCG, beta-HCG, beta 2-M, ferritin, and beta 1-SP, measured by radioimmunoassay.
• Defined "normal" and "suspicious" levels to categorize subjects into "at risk" and "normal" groups.

Main Results:

• 23.6% of the supposedly healthy cohort were classified as "at risk" for early cancer.
• The cancer detection rate in the "at risk" group was 45 per 1,000 (17/378).
• The cancer detection rate in the "normal" group was 3.2 per 1,000 (4/1233).

Conclusions:

• Serum marker determinations can be valuable in cancer screening programs.
• Identifying an "at risk" group significantly enhances early cancer detection rates.
• These findings suggest a potential role for serum markers in proactive cancer surveillance.