10 Examples
Medical & Hereditary Genogram Examples
Map hereditary conditions like cancer (BRCA), diabetes, heart disease, and genetic disorders across family lines using medical quadrant notation. These examples are essential references for genetic counselors, family physicians, and oncologists conducting hereditary risk assessments.
Diabetes Family History Genogram
A three-generation genogram illustrating the clustering of Type 2 diabetes within a family, including comorbid cardiovascular conditions. Paternal grandparents both had T2D, the father was diagnosed at 45, a paternal aunt has Type 1 diabetes, and the maternal grandmother had gestational diabetes. The index patient is a 35-year-old male recently identified as pre-diabetic. Lifestyle and occupational risk factors are documented throughout.
Heart Disease Hereditary Pattern
A three-generation genogram demonstrating the hereditary pattern of coronary artery disease and cardiovascular risk factors. The paternal grandfather died of a myocardial infarction at 58, the father underwent triple coronary artery bypass grafting at 55, and a paternal uncle suffered a stroke. The maternal side shows a pattern of hypertension. The index patient is a 40-year-old male with hyperlipidemia.
Cancer Family History (BRCA)
A three-generation genogram tracing a BRCA1 mutation through a maternal lineage. The maternal grandmother was diagnosed with breast cancer at 45 and died at 52. A maternal aunt developed ovarian cancer at 50. The mother tested positive for BRCA1 and underwent prophylactic bilateral mastectomy. The index patient, a 30-year-old female, has just received a positive BRCA1 test result and is weighing her options for risk reduction.
Alzheimer's & Dementia Family Pattern
A three-generation genogram examining the familial clustering of Alzheimer's disease and other dementias. The paternal grandmother was diagnosed with late-onset Alzheimer's at 72, and a paternal great-aunt at 65. The father is showing early cognitive signs at 60. The maternal grandfather had vascular dementia. APOE4 allele status and cognitive assessment details are included throughout.
Sickle Cell Disease Inheritance
A three-generation genogram illustrating the autosomal recessive inheritance pattern of sickle cell disease. Both parents are carriers with sickle cell trait (HbAS). Among their three children, one has sickle cell disease (HbSS), one is a carrier (HbAS), and one is unaffected (HbAA). Extended family members show the distribution of carriers across maternal and paternal lines, demonstrating how the trait can be present without symptoms for generations.
Cystic Fibrosis Carrier Pattern
A three-generation genogram depicting the autosomal recessive inheritance pattern of cystic fibrosis. Both parents were unknowing carriers of CFTR mutations. Their first child was diagnosed with CF at age 2, while their second child is a carrier. The genogram shows a genetic counseling scenario with extended family carrier status and mutation details.
Hemophilia Inheritance Pattern
A three-generation genogram illustrating the X-linked recessive inheritance pattern of hemophilia A. The maternal grandmother was an obligate carrier. The mother is a carrier, and among her children one son has hemophilia A, another son is unaffected, and a daughter is a carrier. Factor VIII activity levels and clotting profiles are documented throughout.
Huntington's Disease Family
A three-generation genogram illustrating the autosomal dominant inheritance pattern of Huntington's disease. The grandfather was diagnosed at 45 and died at 58. The father is showing early motor symptoms at 42. An aunt chose not to undergo predictive testing. The index patient, a 25-year-old, faces the difficult decision of whether to pursue genetic testing. CAG trinucleotide repeat counts and age of onset data are documented.
Breast Cancer Multi-Generational
A three-generation genogram depicting non-BRCA familial breast cancer clustering. The grandmother had bilateral breast cancer at 55, the mother was diagnosed with unilateral breast cancer at 48, and an aunt at 52. BRCA1 and BRCA2 testing was negative across the family, suggesting other genetic or shared environmental factors. The index patient, a 38-year-old female, is under enhanced screening protocols given her strong family history.
Autoimmune Disease Cluster
A three-generation genogram demonstrating the familial clustering of multiple autoimmune conditions. The maternal grandmother had Hashimoto's thyroiditis, the mother has rheumatoid arthritis, a maternal aunt has systemic lupus erythematosus, the index patient has Crohn's disease, and a sister has celiac disease. HLA associations and the spectrum of autoimmune predisposition across the family are documented.
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