Longitudinal study of leukocyte DNA methylation and biomarkers for cancer risk in older adults

Biomarker Research

Table 1 Characteristics of participants

ID	Ancestry¹	Sex¹	Age¹	Followup Year²	Cancer³	Time⁴
Per1	EA	Male	75	6	no
Per2	AA	Male	71	6	yes^p	7
Per3	AA	Female	72	6	no
Per4	EA	Male	74	6	yes^c	5
Per5	EA	Female	76	6	no
Per6	EA	Male	75	6	yes^p	4
Per7	AA	Male	76	2	no
Per8	AA	Female	78	6	no
Per9	EA	Female	78	6	yes^b	1
Per10	AA	Male	74	6	yes^o	10
Per11	AA	Female	74	6	no
Per12	AA	Female	71	6	no
Per13	EA	Male	76	6	yes^l	0.5
Per14	EA	Male	75	na	no
Per15	EA	Female	73	6	no
Per16	EA	Male	73	6	no
Per17	AA	Female	76	na	no
Per18	AA	Female	78	6	yes^s	11
Per19	AA	Female	72	6 (no baseline DNA)	no
Per20	EA	Female	70	6	no

¹Self-reported race, sex, and age at baseline; EA = European Americans or Caucasians and AA = African Americans
²Year from baseline when second DNA sample was collected; two participants had no follow-up DNA and one participant had no baseline (visit year 1) DNA due to low DNA quality/quantity
³Cancer diagnosis during following years; all participants were considered free of diagnosed cancer at time of screening and recruitment; p = prostate, c = colon; b = breast; l = leukemia; s = stomach; o = other
⁴Time from baseline to cancer diagnosis in years

ISSN: 2050-7771