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NPE = Non Paternity Event
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I recall discussions in genetic genealogy forums a couple of years ago about alternate names or synonyms for NPE. On the ISOGG Wiki page, among other suggested scenarios for NPE shown are:- Non-parental Event
- Non-paternal event
- Non-paternity event (NPE)
- Not the Parent Expected
The term non-paternity event was first used in the context of genetic genealogy by Bryan Sykes and Catherine Irven in their 2000 paper "Surnames and the Y-chromosome
The ISOGG Wiki page also has this statement, under the list of Synonyms for NPE:
The term non-paternity event has a more specific meaning to clinical geneticists, as does the term paternity fraud to lawyers. It would have been better if genetic genealogists had adopted some less pejorative term such as Surname Discontinuity Event to meet their need for a “catch-all” interpretation, but pending some standardization NPE will continue to have different meanings to different people.
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