IIHG How to Draw a Pedigree.pdf
Please follow the instructions below when creating a pedigree.
- Bennett RL, French KS, Resta RG, Austin J. Practice resource-focused revision: Standardized pedigree nomenclature update centered on sex and gender inclusivity: A practice resource of the National Society of Genetic Counselors. J Genet Couns. 2022 Dec;31(6):1238-1248. doi: 10.1002/jgc4.1621. Epub 2022 Sep 15. PMID: 36106433.
- Bennett, R.L., French, K.S., Resta, R.G. & Doyle, D.L. Standardized human pedigree nomenclature: update and assessment of the recommendations of the National Society of Genetic Counselors. J Genet Couns 17, 424-33 (2008).
The following information must be included on the pedigree:
- First name or initials of relatives (To maintain confidentiality do NOT use full names; alternatively, use generation-individual numbers (I-1, I-2, II-1). Please limit identifying information to be compliant with HIPAA guidelines.)
- Affected status (i.e. who in the family has disease) for each individual in the family
- Age of all family members, or age at death (To be compliant with HIPAA guidelines, please do not submit a full birth date at this time.)
- Whether individuals are living or deceased. Cause of death, if known, should be indicated below the symbol.
- Residence for all family members (City, State)
- Willingness to participate in the study (indicate with an asterisk)
- Key to shading of symbols
- Adoption status
- Consanguinity (i.e. parents are related)
- Race and ethnicity
- Date pedigree obtained
General guidelines:
- It is helpful to start in the middle of the page when drawing a pedigree.
- Male partners are to the left of female partners.
- Siblings are drawn from oldest to youngest with the oldest listed on the left and the youngest on the right.
- If there are multiple disorders or diseases, use quadrants or different shading (solid, cross-hatching) to indicate each disease (see examples)