© 2009 NHS National Genetics Education and Development CentreGenetics and Genomics for Healthcare www.geneticseducation.nhs.uk Taking a family history.

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Presentation transcript:

© 2009 NHS National Genetics Education and Development CentreGenetics and Genomics for Healthcare Taking a family history This PowerPoint file contains a number of slides that may be useful for teaching of genetics concepts. You may use these slides and their contents for non-commercial educational purposes.

© 2009 NHS National Genetics Education and Development CentreGenetics and Genomics for Healthcare Drawing a family pedigree Build up the tree from the "bottom" starting with affected child and siblings. Record names, dates of birth. I:3 Norman Pugh I:4 Elsie II:3 Howard Pugh II:4 Judy III:4 Duncan III:5 Mark II:2 Judith 21/2/1951 III:1 Kirsty 16/3/1980 III:2 Stephen 20/3/1982 III:3 Richard 5/8/1984 III:1 Kirsty 16/3/1980 III:2 Stephen 20/3/1982 III:3 Richard 5/8/1984 Choose one parent. Ask about sibs and their children, then parents.

© 2009 NHS National Genetics Education and Development CentreGenetics and Genomics for Healthcare Add information on the other side of the family I:1 Arthur Smith 18/3/1918 I:2 Elizabeth 27/6/1918 II:1 Peter Smith 1/10/1950 I:3 Norman Pugh I:4 Elsie II:3 Howard Pugh II:4 Judy III:4 Duncan III:5 Mark III:1 Kirsty 16/3/1980 III:2 Stephen 20/3/1982 III:3 Richard 5/8/1984 II:2 Judith 21/2/1951 Colour in the symbol if the person is affected Put a sloping line through the symbol (from the bottom left hand corner) if the person has died Record names, dates of birth and maiden names Ask for miscarriages, stillbirths or deaths in each partnership Use clear symbols: circles for females squares for males

© 2009 NHS National Genetics Education and Development CentreGenetics and Genomics for Healthcare May I ask: have you had any children with other partners?

© 2009 NHS National Genetics Education and Development CentreGenetics and Genomics for Healthcare Other pedigree symbols SB Unaffected person whose sex is unknown Twins: identical;non-identical consanguineous Double line joins union of couple Stillborn baby of unknown sex Spontaneous abortion Therapeutic abortion Affected maleUnaffected female who has died Affected female

© 2009 NHS National Genetics Education and Development CentreGenetics and Genomics for Healthcare Drawing a family pedigree Ask about consanguinity:- Are you and your partner related? Are there any surnames in common? Date and sign the pedigree. For a known diagnosis (e.g. autosomal recessive) it may not be necessary to collect as much detail. Record at least basic information on both sides of the family even if a disorder is segregating on only one side.