Genetic counseling principles

Counseling Foundations - The Why & Who

• Primary Goal: Provide information and support to help individuals/families understand and adapt to the medical, psychological, and familial implications of genetic contributions to disease.

• Key Indications (Who needs it?):

  • Advanced maternal age (>35 years)
  • Positive family history of a genetic disorder
  • Previous child with a congenital anomaly or genetic condition
  • Abnormal prenatal screening/diagnostic test results
  • Consanguineous marriage
  • Recurrent pregnancy loss

⭐ The core principle is non-directive counseling: The counselor facilitates the patient's own decision-making process, rather than recommending a course of action.

The Genetic Drilldown - Process & Pedigrees

• Process: A communication process addressing human problems associated with the occurrence or risk of a genetic disorder in a family. It involves diagnosis, risk assessment, and providing support.

• Key Indications:

  • Advanced maternal age (>35 years)
  • Previous child with a genetic disorder or malformation
  • Known genetic condition in the family
  • Consanguinity
  • Recurrent pregnancy loss

• Counseling Workflow:

⭐ Non-Directive Counseling: The core principle is to provide information and options without directing the individual or family towards a specific course of action. The final decision rests with them.

• Pedigree: A graphical record of genetic inheritance. The proband (first affected member seeking attention) is marked with an arrow (→).

Rules of the Road - Ethics & Indian Law

• Core Ethical Principles:
  • Autonomy: Respecting the patient's right to self-determination in decisions (e.g., testing, continuing pregnancy).
  • Beneficence: Acting in the patient's best interest.
  • Non-maleficence: Avoiding harm ("primum non nocere").
  • Confidentiality & Justice: Protecting sensitive data and ensuring fair access to services.
• Informed Consent: A process, not just a form. Must cover:
  • Purpose, risks, benefits, limitations & alternatives of the test.
  • The voluntary nature of testing and the right to refuse.
• Indian Legal Framework:
  • PC-PNDT Act, 1994: Cornerstone law to prevent female feticide. Prohibits sex selection and determination.

⭐ Key PC-PNDT Mandate: The Act strictly prohibits the determination and disclosure of fetal sex. All genetic labs and clinics must be registered. Strict record-keeping is mandatory, with severe penalties for violations, including imprisonment and license cancellation.

• Non-directive counseling is the cornerstone, respecting patient autonomy.
• Pre-test and post-test counseling are mandatory for any genetic testing.
• The PCPNDT Act strictly prohibits sex determination and is a key legal framework.
• Calculating recurrence risk (e.g., 25% for AR, 50% for AD) is fundamental.
• Advanced maternal age (>35 years) is a major indication for prenatal screening.
• Consanguinity significantly ↑ the risk for autosomal recessive disorders.
• Confidentiality is vital but can be broken to prevent serious harm to relatives.