Review article

Tumor Markers in Clinical Practice: A Review Focusing on Common Solid Cancers

Med Princ Pract · 2012Review article; no patient sample
Duffy MJ. Med Princ Pract. 2012. 22:4-11
Study type
Review article
Design
Narrative (non-systematic) review
Sample size
Review article; no patient sample
Source
Med Princ Pract · 2012

In plain words

Tumour markers are tests that can help the doctor diagnose cancer, follow treatment and choose the right drug. Some of them, such as the faecal occult blood test for bowel cancer or testing for HER2 and oestrogen receptors in breast cancer, are useful and well established. But not all tests work equally well; for example, whether the PSA test reduces deaths from prostate cancer is still unclear. The results of these tests should always be interpreted with the treating doctor.

Key results

Faecal occult blood test
Colorectal cancer screening
Clinically useful marker for screening for early colorectal cancer
Carcinoembryonic antigen (CEA)
Management of colorectal cancer
Useful in the management of patients with colorectal cancer
Alpha-fetoprotein (AFP) and human chorionic gonadotropin (hCG)
Non-seminomatous germ cell tumours
Useful in the management of these patients
CA 125
Ovarian cancer
Useful for monitoring therapy
Oestrogen receptors
Breast cancer: endocrine therapy
Predicting response to endocrine therapy
HER2
Breast cancer: trastuzumab
Identifying women likely to respond to trastuzumab (Herceptin)
KRAS mutation status
Advanced colorectal cancer
Identifying patients likely to benefit from the anti-EGFR antibodies cetuximab and panitumumab
Prostate-specific antigen (PSA)
Prostate cancer screening
Despite widespread use, its value in reducing prostate cancer mortality is uncertain

Study population

This is a review article and no individual patients were enrolled. The review focuses on tumour markers used in common solid cancers.

Endpoints

This is a review article with no predefined endpoint. Potential uses of tumour markers are reviewed: screening for early detection of malignancy, aiding cancer diagnosis, determining prognosis, surveillance after surgery with curative intent, predicting response or resistance to drugs in advance, and monitoring therapy in advanced disease.

Safety and side effects

The abstract does not mention adverse events (the article is a review of laboratory tests).

Clinical significance and place in guidelines

This review shows that a number of tumour markers have an established place in clinical practice, including the faecal occult blood test, CEA, AFP, hCG, CA 125, oestrogen receptors, HER2 and KRAS mutation. In contrast, the value of PSA screening in reducing mortality is described as uncertain. The abstract does not refer to a specific clinical guideline, and the current status of guideline recommendations should be checked separately.

Limitations

This is a narrative review, and the abstract reports no systematic search method or assessment of evidence quality. The review was published in 2012 and may not include newer evidence and guidelines. The abstract presents no numerical data.

This summary was prepared by the editorial team from the published paper; the original paper is the final reference. Read the original abstract on PubMed.