Table 3. Distribution of NECS cases (row 2), NECS controls (row 3) and Illumina controls (row 4) in clusters of genetic ethnicity (columns).

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
Cent	0	21	34	79	27	189	6	0	31	102	22	20	3	94	0	15	94	34	0	25
Control	2	20	8	14	30	38	2	1	16	19	18	3	4	12	4	3	29	7	0	12
Illumina	90	310	192	47	278	168	223	104	277	288	200	120	173	132	169	54	266	154	118	250

The table shows the 20 clusters of genetic ethnicity that were discovered using a clustering algorithm described in reference [20]. Note that no centenarians were allocated to cluster 1 or 15. These clusters are represented by full red dots in Figure S1 and denote Franks and Celtics- Alpine ethnicities.