Medical geneticists and genetic counselors play crucial roles in the field of genetics, focusing on the diagnosis, management, and counseling of genetic disorders. Medical geneticists are physicians who specialize in identifying and treating hereditary conditions and congenital anomalies, conducting genetic testing, and interpreting results to guide patient care. Genetic counselors provide supportive counseling to individuals and families, helping them understand genetic conditions, the risks of inherited diseases, and the implications of genetic testing. They work closely with patients to facilitate informed decision-making and provide resources and support for coping with genetic disorders. Together, these professionals contribute significantly to personalized medicine and preventative healthcare.

Medical geneticists and genetic counselors draw pedigrees (family trees) to systematically record and analyze a patient's family history, mapping out the inheritance patterns of genetic conditions. By creating these visual representations, which use standardized symbols to denote family members and their relationships, they can track the occurrence of genetic disorders across generations. Pedigrees help identify whether conditions follow Mendelian inheritance patterns such as autosomal dominant, autosomal recessive, X-linked, or mitochondrial. This detailed familial mapping allows genetic professionals to recognize at-risk individuals, predict potential health issues, and make informed diagnoses. Ultimately, pedigrees are invaluable tools in understanding the genetic basis of diseases, guiding targeted genetic testing, and facilitating effective patient counseling and management.

This 3D-printed stencil tool has been developed to assist medical geneticists, genetic counselors, and students in drawing family trees more efficiently. This innovative tool includes squares to symbolize males, circles for females, and triangles for miscarriages, ensuring clarity in representing family members. This tool enhances the accuracy and comprehensiveness of family history documentation, ultimately aiding in the diagnosis and management of genetic conditions.

The second file is a simplified version for printing ease. 

Designed by Christopher Connolly MD MBA MS and Mallory Wagner MS LCGC

Sample pedigree: https://www.ncbi.nlm.nih.gov/books/NBK115557/