Table 3 Researcher perspectives and approach to the identification of incidental findings

From: Experiences and perspectives on the return of secondary findings among genetic epidemiologists

Question/response

N (%)a

As a PI/key personnel on a project that enrolls research participants, what type of findings do you believe should be returned, regardless of what your current consent form says? Check all that apply.

 

  Actionable findings, such as PKU, where a medical intervention exists

40

  Clinically validated findings, such as BRCA1/2, which would require additional counseling

33

  Variants with reproductive/family planning implications (carrier status)

18

  Variants with no known significance

2

 Other

10

If for any of your projects, you analyze secondary data (e.g., from a repository, dbGaP, WTCC, and/or through a consortium), what do you believe your obligation is, if any, to return genetic results to study participants?

 

  Contact the PI of the study that enrolled the study participants, and provide the finding

58 (33)

  Nothing—the PI should have already found any important results

14 (8)

  Nothing—I am not covered on the PI’s ethical review (IRB), so I have no legal, moral, or ethical obligation

24 (19)

  Not applicable—I only analyze primary data

45 (26)

  Other

25 (14)

How do you approach the identification of “incidental findings” (potentially disease-causing variants with clinical relevance)?

 

  I intentionally filter out genetic variants not relevant to the medical question I am studying

6 (4)

  I do not search the data for genetic variants that do not have a potential association with the medical condition I am studying, but I do not intentionally filter them out

104 (61)

  I intentionally search the data for known variants that I believe have clinical relevance and make a note of them

9 (5)

  I intentionally search the data for all known variants regardless of their clinical relevance and make a note of them

22 (13)

  I do not worry about incidental findings or do not have the level of genetic data (GWAS or ES/GS) to observe them

31 (18)

The ACMG has made formal recommendations on the return of incidental findings: “We recommend that laboratories performing clinical sequencing seek and report mutations of the specified classes or types in the genes…” and provide a list of 56 genes with “known pathogenic” or “expected pathogenic” sequence variation. Do you think that the results of sequencing conducted in research studies should follow these same recommendations?

 

  Yes

40 (23)

  No

70 (43)

  Don’t know

65 (37)

Do you feel that genetic epidemiologists have a different perspective and/or approach to incidental findings and return of results than researchers/professionals in other areas of genetics (medical genetics, genetic counseling, molecular genetics, etc.)?

 

  Yes

92 (54)

  No

21 (12)

  Don’t know

57 (34)

Should there be separate policies or professional guidance regarding incidental findings within genetic epidemiology studies? Please provide an explanation for your response.

 

  Yes

77 (45)

  No

40 (24)

  Don’t know

52 (31)

  1. ACMG American College of Medical Genetics and Genomics, ES exome sequencing, GS genome sequencing, GWAS genome-wide association studies, IRB institutional review board, PI principal investigator, PKU phenylketonuria, WTCC Welcome Trust Case-Control Consortium.
  2. aWhen respondents could indicate more than one category, percentages are not provided.