Genetic Testing for Cancer
Heredity doesn't determine everything. However, for some tumors, it plays a decisive role. Genetic testing for cancer is a laboratory test that detects inherited changes in DNA. These tests show how much an individual's cancer risk is elevated.
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When is genetic testing for cancer recommended at K+31?
There's no point in testing everyone. An examination is indicated when the family history hints at a congenital nature of the disease, and the doctor reviews the family history.
It's worth making an appointment for a consultation if one of the following occurs:
- Multiple cases of cancer in the family
- Cancer in first-degree relatives
- Tumor development at a young age
- Recurrence of the same type of cancer in relatives
- Suspected hereditary cancer syndrome
No sign is a death sentence—it's just a reason to check with a specialist for a hereditary predisposition to cancer.
Presence of cancer cases in close relatives
Parents, brother, sister, and child are first-degree relatives. If one of them has had a malignant tumor, a detailed family history is helpful.
Early Development of Cancer in the Family
A tumor that develops in the 30s or 40s is more often hereditary than the same disease after age sixty.
Multiple Cases of the Same Type of Cancer in Family Members
When the same type of tumor recurs in several relatives, it cannot be explained by chance. Recurring hereditary cancer in the same location is a classic sign of a familial syndrome.
General information
What types of genetic tests are used in oncology?
There is no single, all-in-one test. Any cancer gene analysis begins with the question of which DNA regions to test, and we tailor the scope of the study to the individual.
Inherited Mutation Analysis
The most targeted option is testing specific, well-studied genes. A classic example is BRCA1/2, changes in which are associated with hereditary breast and ovarian cancer. This test looks for known mutations in genes with a proven role: it is accurate, but covers a narrow range of mutations.
Panel Genetic Tests
When several genes are suspected, they are tested in a single package—a panel. This type of genetic analysis for cancer is more informative than a targeted approach.
Advanced Gene Sequencing
The broadest approach is to read dozens and hundreds of genes at once. Modern next-generation sequencing (NGS) analyzes DNA sections letter by letter—it's the most comprehensive gene analysis for cancer. A full molecular genetic study is needed in complex cases where narrow panels are silent.
The three approaches can be conveniently compared based on coverage, accuracy, and purpose.
| Test Type | What it evaluates | Who is it recommended for | Advantages | Limitations |
|---|---|---|---|---|
| Inherited Mutation Analysis | Mutations in Known Susceptibility Genes | Family History of Breast and Ovarian Cancer | High Accuracy, Clinical Validation | Limited Panel Genes |
| Panel Studies | Hereditary Tumor Genes | Unclear Family Cancer History | Wide Coverage and Informativeness | Variations of Unclear Meaning Possible |
| Near-Generation Sequencing (NGS) | Tens and Hundreds of Genes | Complex Syndromes, Negative Narrow Panels | Maximum Diagnostic Value, Rare Mutations | Complex Interpretation, Higher Cost |
The doctor decides which option is appropriate.
Benefits of Genetic Testing for Cancer
The main value of this method is time. Here's what it offers in practice.
- Assess cancer risk before symptoms appear
- Develop a personalized screening and preventative care plan
- Start early cancer diagnosis and cancer prevention in a timely manner
- Make informed treatment decisions if the disease does appear
This approach is called personalized medicine: the treatment plan is tailored to the individual. The decision on the measures themselves is always made by the doctor.
Doctor's quote:
"In our practice, we regularly encounter situations where timely oncogenetic testing helps identify hereditary risks even before the disease appears. This allows us to develop a personalized care plan and significantly increase the effectiveness of preventative measures," says an oncologist and medical geneticist.
Why patients choose K+31
Genetics doesn't tolerate a superficial approach, so we've assembled a team and equipment dedicated to this task.
What exactly does a person receive when they contact us:
- A comprehensive approach to cancer risk assessment
- Consultations with specialized specialists – oncologists and geneticists
- Modern methods of molecular genetic analysis
- Personalized interpretation of each result
- Preparation of personalized recommendations for follow-up
- High standards of laboratory diagnostics
- Confidentiality of genetic information
- Support at all stages – from consultation to final analysis
We remain with the patient even after the analysis: with a completed genetic profile, it's easier to plan follow-up for years to come.
Answers to frequently asked questions
We've collected what patients most often ask before the examination.
Who should get a genetic test for cancer?
Can a genetic test determine whether cancer will definitely develop?
What biomaterial is used for the test?
What should you do after receiving the results?
References
- Clinical Guidelines of the Russian Ministry of Health (Clinical Guidelines Index) — https://cr.minzdrav.gov.ru
- Russian Ministry of Health Portal — https://minzdrav.gov.ru
- Russian Society of Clinical Oncology (RUSSCO) — https://rosoncoweb.ru
- Association of Oncologists of Russia — https://oncology-association.ru
- Scientific Electronic Library eLIBRARY — https://elibrary.ru
- CyberLeninka — https://cyberleninka.ru
- Russian Journal of Oncology — https://www.mediasphera.ru
- National Medical Chamber — https://nacmedpalata.ru
- MSD Manual (Russian version) — https://www.msdmanuals.com/ru
- Center for Expertise and Quality Control of Medical Care of the Ministry of Health of the Russian Federation — https://cr.rosminzdrav.ru
- PubMed (Russian-language materials and reviews available through publications by Russian authors) — https://pubmed.ncbi.nlm.nih.gov
- National Medical Research Center of Oncology of the Russian Ministry of Health — https://www.oncology.ru
- National Medical Research Center of Radiology of the Russian Ministry of Health — https://nmicr.ru
- Encyclopedia of Rare Diseases in Russian — https://rarediseases.org.ru
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What is genetic testing for cancer?
This involves searching for inherited mutations that increase the risk of malignant tumors. The laboratory studies individual genes or the entire genome, looking for dangerous changes—so-called genetic mutations. This oncogenetic testing does not make a diagnosis, but rather assesses predisposition, so only a doctor can interpret the results.
The field that studies inherited cancer risks is called oncogenetics. Oncogenetics combines molecular biology and clinical oncology and determines whether cancer is hereditary. Over the past twenty years, geneticists have been increasingly testing for cancer, and the procedure has become commonplace. Knowledge of hereditary predisposition to cancer changes tactics, and the risk of developing cancer is easier to manage. Sometimes a narrow genetic analysis for cancer is sufficient, while other times a broad approach is needed.