Hereditary Cancer Test: Can Genetic Testing Help Assess Your Cancer Risk?

Overview:

• Find out what hereditary cancer testing is and how it differs from cancer screening.
• Find out who should consider hereditary cancer testing based on their personal and family history
• Understand what positive, negative, and VUS genetic test results mean.
• Explore hereditary cancers and commonly evaluated genes using multigene panels. 
• Find out where you can get hereditary cancer testing in Delhi.

Cancer affects millions of families, but not every cancer is inherited. If your parent, sibling, or another close relative has been diagnosed with cancer, you've probably wondered at some point, "Could this happen to me too?" While lifestyle, age, and environmental factors contribute to most cancers, some are linked to inherited genetic changes passed down through families. Understanding whether cancer risk runs in your family can help you make more informed decisions about your health.

Cancer affects more families every year, and according to ICMR estimates, nearly one in nine Indians is expected to develop cancer during their lifetime. At the same time, India is projected to report around 15.7 lakh (1.57 million) new cancer cases in 2025. Although only a small percentage of cancers are hereditary, identifying inherited genetic mutations in people with a strong family history can support earlier screening, preventive care, and informed discussions with healthcare providers.

Quick Answer: 

Hereditary cancer testing is a genetic test that identifies inherited gene mutations that are associated with an increased risk of developing certain types of cancer. It can help assess your risk for hereditary cancer and allow your health care provider to recommend individualized screening, preventive care, or additional testing if needed.

Could Cancer Run in Your Family? 

Having a family member with cancer doesn't automatically mean you'll develop it too. Most cancers occur due to a combination of aging, lifestyle, environmental exposures, and random genetic changes that happen over time. However, in some families, inherited genetic mutations can increase the risk of developing certain cancers across generations.

According to the National Cancer Institute (NCI), only about 5–10% of all cancers are considered hereditary, meaning inherited gene mutations cause them to be passed from parent to child. While this percentage is relatively small, recognizing a hereditary cancer pattern can make a meaningful difference in guiding early screening, preventive care, and healthcare planning.

What Is a Hereditary Cancer Test?

A hereditary cancer test is a genetic test that looks for hereditary mutations that may contribute to someone's risk for certain cancers. It does not detect cancer but rather helps understand if someone has inherited genetic mutations that would increase their risk for cancer within the family.

A hereditary cancer test is also referred to as a germline cancer test or a cancer predisposition test because it investigates germline mutations, which are genetic mutations that a person receives from their parents and are present at birth. Because these changes can be inherited, the presence of certain kinds of cancers in some families may be explained by mutations being passed down from generation to generation.

Hereditary Cancer Panel vs Single-Gene Testing 

Not every hereditary cancer test analyzes the same number of genes. The best option is based on your family and personal medical history, if there's information about a known inherited change, and what your doctor has assessed in terms of your health status. According to the latest joint guidelines from the American Society of Clinical Oncology (ASCO) and the Society of Surgical Oncology (SSO), multigene panel testing is recommended when more than one gene could explain an individual's personal or family history of cancer. When a specific inherited mutation is already known within a family, targeted single-gene testing may be appropriate in selected situations. 

Single-Gene Testing	Hereditary Cancer Panel
Examines one specific gene	Examines multiple cancer-related genes in one test
Often recommended when a known inherited mutation is suspected	Often considered when several genes may contribute to inherited cancer risk
Focused assessment	Broader inherited risk assessment
May answer one specific clinical question	Can identify inherited mutations across different hereditary cancer syndromes

Key takeaway: The right test isn't determined by the number of genes it analyzes but by your personal and family history, which is why genetic counseling and clinical evaluation are important before testing. 

Who Should Consider Genetic Testing for Cancer? 

You may want to discuss hereditary cancer testing with your healthcare provider or a genetic counselor. If you answer "Yes" to any of these questions: 

1. Have several members of the family received the same or related cancer diagnoses? 
2. Have you or any family member been diagnosed with cancer at a very young age? 
3. Has any family member been detected with any genetic mutation like BRCA1 or BRCA2?
4. Have any of your family members developed more than one type of cancer? 
5. Has your doctor recommended that you take genetic testing?

How to Understand Your Hereditary Cancer Test Results 

1. Does a Positive Result Mean I Have Cancer?

No. A positive result means that the test identified an inherited genetic variation associated with an increased risk of developing one or more types of cancer. This does not confirm that you will develop cancer, but it can help your doctor recommend individualized screening, prevention strategies, or genetic counseling based on your individual risk.

2. What If My Result Is Negative?

A negative result means that no disease-causing inherited mutations were found in the gene analyzed. Depending on your personal and family history, your doctor may recommend regular cancer screenings or additional genetic evaluation in certain circumstances.

3. What Is a Variant of Uncertain Significance (VUS)?

Variants of undetermined significance (VUS) are genetic changes for which there is insufficient scientific evidence to determine whether they are harmful or harmless. Most IVUS findings do not change management and may be reclassified as additional studies become available.

What Happens After a Hereditary Cancer Test? 

Having your hereditary cancer test done means that you are one step closer to determining your risks. Your results, medical history, and family history will decide the next step. Your doctor or genetic counselor will help you understand what your results mean and whether any further action is needed.

Your healthcare professional may suggest the following depending on your results:

1. A customized plan for cancer screening.
2. Preventive steps or appropriate subsequent follow-up.
3. Genetic counseling to clarify the findings of your report.
4. Conducting tests on other family members when a genetic mutation is found.

What Cancers Can a Hereditary Cancer Panel Help Assess?

Cancer Type	Common Hereditary Cancer Genes
Breast	BRCA1, BRCA2, PALB2, CHEK2
Ovarian	BRCA1, BRCA2, BRIP1, RAD51C, RAD51D
Colorectal (Lynch syndrome)	MLH1, MSH2, MSH6, PMS2, EPCAM
Pancreatic	BRCA2, ATM, PALB2
Prostate	BRCA2, ATM, CHEK2
Melanoma	CDKN2A
Endometrial	MLH1, MSH2, MSH6, PMS2

Note: This table includes examples of well-established hereditary cancer genes. A comprehensive hereditary cancer panel assesses many additional genes and helps evaluate inherited cancer risk. 

Looking for a Hereditary Cancer Test in Delhi? 

If you have been looking for a hereditary cancer testing lab and believe you or a family member has a high possibility of developing an inherited cancer, the first step to deal with the situation is to consult with your doctor or genetic counselor. Choosing a panel of hereditary cancers from a reliable diagnostic lab can help you make better screening and preventive healthcare decisions for yourself and your family.

The Redcliffe Labs' OncoShield - Comprehensive Hereditary Cancer Risk Panel (Germline Test) is a thorough genetic screening test that analyzes 200+ genes associated with hereditary cancer syndromes by using the powerful Next-Generation Sequencing (NGS) technology. The test is processed through NABL-accredited labs, does not require fasting, and can also be availed from the comfort of your home.

If you're curious about how genomic sequencing technologies work, read our guide on Clinical Exome Sequencing vs Whole Exome Sequencing: What's the Difference? 

Explore Hereditary Cancer Testing at Redcliffe Labs: 

https://redcliffelabs.com/oncoshield-comprehensive-hereditary-cancer-panel-200-genes

FAQs 

1. How accurate is hereditary cancer testing? 

Hereditary cancer testing, when performed using validated testing methods such as next-generation sequencing (NGS), can be highly accurate in detecting inherited genetic mutations in a panel of tests. However, this test assesses your genetic risk and cannot diagnose cancer or reliably predict whether you will develop cancer. Test results should always be interpreted by your doctor or genetic counselor, along with your personal and family history.

2. Does having a family history of cancer mean I will get cancer? 

No, just because you have a family history of cancer does not mean you will get cancer. Most cancers are not hereditary. However, talking about hereditary cancers with your health care professional, especially at a young age, can help you assess your genetic risk if several close relatives have the same or related cancers.

3. Who should consider hereditary cancer testing?

There is no specific age recommended for testing for inherited cancers. It usually depends on your personal and family history of medical conditions, the type of cancer, and whether the results will guide any screening or preventive methods. You should consult with your physician or genetic advisor to find out when it is suitable to perform the test.

4. Does a positive hereditary cancer test mean I have cancer? 

No. A positive hereditary cancer test means an inherited genetic mutation associated with an increased risk of developing certain cancers has been identified. It does not confirm that you currently have cancer or that you will definitely develop it. Your healthcare provider may recommend personalized screening, preventive strategies, or genetic counseling based on your results. 

5. Is hereditary cancer testing different from cancer screening? 

Yes. Hereditary cancer testing is used to identify inherited genetic changes that could increase the risk of getting certain cancers during one's lifetime. Cancer screening, on the other hand, is used to detect existing cancers or precancerous conditions. Genetic testing identifies the risk that one inherits from family history, while screening is used to identify the cancer early on.