| Country | BRCA1 mutations | BRCA2 mutations | Founder mutations |
| Finland | c.5095C>T [3],4216-2nt A–>G 5370C>T [159]
| 4088insA, c.68-80insT, c.793+34T>G 999del5 6503delTT [159] | 4216-2ntA>G 5370C>T 999del5 6503delTT [159]
| Sweden | 3172ins5, 2594delC 1806C>T, 1201del11 [47, 48] | 4486delG [47, 48] | 3172ins5, 2594delC 1806C>T, 1201del11 4486delG [47, 48]
| Denmark | 3172ins5 and 1201del11 1675delA and 1135insC [38, 49] | 2594delC, 5382insC 3829delT and Q563X 3438G>T, 1675delA, 999del5 [38, 49] | Iceland/Denmark (999del5) Norway/Denmark (1675delA and 1135insC) Swedish/Danish founder (3172ins5 and 1201del11, 3438G>T, 1675delA) Danish specific: 2594delC, 5382insC, 3829delT, and Q563X [38, 49] | Norway | 1135insA, 1675delA, 816delGT, 3203del11, and 3347delAG [50, 51] | — | — | Iceland | G5193A [54] | 999del5 [54] | 999del5, G5193A [54] | Netherland | Exon 13 and 22 del 2804delAA IVS2011G>A, IVS21-36del510 5382insC, 1411insT, 2138delA 2312del5, 2457C4T, 185insA, 185delAG [59] | 6503delTT, 8295T4A, 9900insA, 5579insA, 7647delTG [59] | 5579insA, exon 13 del [59], 2804delA [160] |
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