Medical specialty

Genetic counseling: assessing hereditary cancer risk

Genetic counseling helps evaluate whether personal or family history may indicate an increased risk for some types of cancer hereditary. The consultation guides decisions about investigation, genetic testing when indicated and individualized follow-up.

In-person service in São Paulo and guidance on teleconsultation for patients in other cities and states and countries.

Genetic counseling consultation and family history assessment

Genetic information needs to be interpreted with clinical context

Counseling considers personal and family history, the types of cancer present in the family, the age at which diagnoses occurred and other clinical factors. The decision whether or not to order a test must be individualized.

Genetic counseling is not just a test.
Not every family history requires genetic testing.
Every result needs clinical and family interpretation.

What is genetic counseling?

Genetic counseling is a consultation aimed at evaluating personal and family information that may indicate hereditary risk for certain conditions. In the context of cancer, it helps to understand whether there are elements that justify additional investigation, genetic testing or specific follow-up.

The consultation also allows you to discuss the benefits, limits, possible results and impacts of a genetic evaluation before making any decision about testing.

Genetic counseling and genetic testing: what’s the difference?

CriteriaGenetic counselingTest geneticHow they complement each other
ObjectiveEvaluate history, context and doubts to support informed decisions.Analyze genetic information according to the defined indication and scope.The consultation can indicate whether testing makes sense and which question should be answered.
Information evaluatedHistory personal, family, diagnoses, ages and available documents.Variants in the genes included in the requested analysis.The result gains meaning when related to the clinical and family context.
When it can be indicatedWhen there are doubts or elements that merit hereditary risk assessment.Only when the evaluation identifies a justifiable clinical question.Not all counseling results in testing.
LimitationsDepends on the quality and availability of information.Does not assess all cancer risk and may produce inconclusive results.Limits need to be discussed before and after the exam.
InterpretationPerformed by a qualified professional, considering the set of information.Should not be interpreted alone or just through the report.Clinical interpretation guides the next steps.
Next stepsMay include monitoring, referral, testing or no testing at that time.Depends on the type of result and the individual context.There is no single approach for all results.

Genetic testing can be one of the tools used during the investigation, but it does not replace clinical evaluation. In some cases, the recommendation may be not to perform the test at that time.

When to seek genetic counseling?

  • Multiple cases of cancer on the same side of the family;
  • Diagnosis of cancer at a younger age than expected;
  • More than one type of cancer in the same person;
  • Tumors in paired organs or bilaterality, when applicable;
  • Family history of breast, ovarian, pancreatic, prostate, colorectal, endometrial, stomach or other tumors;
  • Relative with a genetic variant already identified;
  • Personal history associated with a possible hereditary syndrome;
  • Questions about family risk of cancer;
  • Indication made by a healthcare professional team;
  • Need for a second opinion.

The presence of one of these factors does not confirm a hereditary syndrome and does not mean that genetic testing will necessarily be indicated.

How does the genetic counseling consultation work?

1. Personal and family history

The consultation considers personal and family diagnoses, types of cancer, age at diagnosis and available information.

2. Risk assessment

The professional assesses whether there are elements that may suggest the need for additional genetic investigation.

3. Discussion about tests

When indicated, objectives, benefits, limitations, possible results and impacts for the patient and family are explained.

4. Follow-up plan

Next steps may include clinical follow-up, referral, family counseling or discussion of strategies as appropriate.

How can genetic results be interpreted?

Pathogenic or likely pathogenic variant

May indicate a genetic change associated with increased risk for certain conditions. The meaning depends on the gene, personal and family history, and applicable guidelines.

No relevant variants identified

It may mean that no relevant changes were identified in the analysis performed. This does not eliminate all risks and should be interpreted in conjunction with the history.

Variant of uncertain significance

Indicates a change whose clinical importance has not yet been defined. It should not be interpreted as confirmation of risk or diagnosis of disease.

Known family result

When a variant has already been identified in a family member, the assessment can guide whether it makes sense to investigate this information in other family members.

Why is family history important?

Information about family members can help identify patterns worth evaluating. Both the maternal and paternal sides must be considered.

  • Who was diagnosed;
  • What type of cancer was it;
  • At what age it occurred;
  • If there was more than one tumor;
  • If there are previous genetic results;
  • What is the relationship and side of the family.

What to bring to your genetic counseling appointment?

  • Previous exams, when available;
  • Medical reports;
  • Results of genetic tests already performed;
  • Information about family members with cancer;
  • Anatomopathological reports or diagnostic documents, when available;
  • List of medications for continuous use;
  • Questions you wish to discuss.

Be sure to schedule an appointment if you do not yet have all the documents. The team will be able to advise which information may be useful.

Genetic counseling integrated into your care

When indicated, counseling can be integrated into different areas. Not all patients need multidisciplinary follow-up.

Mastology

mastologia can participate when personal or family history involves breast health.

Oncology

oncology can integrate the care of patients with a personal diagnosis or oncological follow-up.

Gynecological surgery

A gynecological surgery participates only when there is an independent and individualized clinical indication. Woman.

In-person service and teleconsultation

Clínica Medicina da Mulher provides in-person service in São Paulo and can provide guidance on teleconsultation for patients from other cities, states and countries, depending on clinical need, team availability and rules apply.

Genetic Counseling FAQ

It is a consultation that evaluates personal and family information to understand whether there are elements compatible with hereditary risk of certain conditions. In the context of cancer, it helps to organize the history, discuss benefits and limits of the investigation and decide whether or not a genetic test may be indicated.

No. Counseling is an assessment and communication process that considers history, doubts and objectives. The test is a tool that analyzes genetic information within a defined scope. In some cases, the consultation may conclude that testing is not necessary at that time.

People with personal diagnosis, family cancer patterns, diagnoses at young ages, multiple tumors or relative with a known variant may benefit from an evaluation. These factors do not confirm an inherited syndrome and do not automatically make testing necessary.

Not necessarily. Cancer is a common condition and can run in families without an identifiable hereditary cause. The evaluation considers number of cases, types of tumor, relationship, maternal or paternal side, age at diagnosis and other information before estimating the need for investigation.

A hereditary risk test is not used alone to diagnose the presence of a tumor. It can identify genetic information associated with certain risks when indicated. Diagnosis, tracking and monitoring depend on clinical assessment and appropriate exams for each situation.

Understand your family history with expert guidance

An assessment can help organize information about personal and family history, clarify doubts about genetic testing and guide next steps on an individual basis.