Table 1. Germline and somatic pathogenic BRCA1/2 mutations identified in ctDNA from 121 patients with ovarian cancer.
Gene | Mutation in corresponding ctDNA | Predicted effect | Type | Case no | FIGO stage | Origin | RS number | Classification A | % reads |
---|---|---|---|---|---|---|---|---|---|
BRCA1 | c.181T>G | p.Cys61Gly | M | #71 | IIIC | Somatic | rs28897672 | Pathogenic [class 5] | 7 |
#115 | IIIC | Germline | 51 | ||||||
c.1793T>A | p.Leu598Ter | N | #85 | IA | Germline | rs80357118 | Pathogenic [class 5] | 51 | |
c.3296delC | p.Pro1099Leufs*10 | FS | #397 | IIIC | Germline | rs80357815 | Pathogenic [class 5] | 38 | |
c.3700_3704del | p.Val1234Glnfs*8 | FS | #22 | IIIB | Germline | rs80357609 | Pathogenic [class 5] | 54 | |
#38 | IIIC | 50 | |||||||
#66 | IIIC | 70 | |||||||
c.3756_3759del | p.Ser1253Argfs*10 | FS | #100 | IIIC | Somatic | rs80357868 | Pathogenic [class 5] | 17 | |
c.5177_5180del | p.Arg1726Lysfs*3 | FS | #162 | IIIC | Germline | rs80357975 | Pathogenic [class 5] | 60 | |
c.5266dupC | p.Gln1756Profs*74 | FS | #50 | IIIC | Germline | rs397507247 | Pathogenic [class 5] | 43 | |
#108 | NR | 69 | |||||||
#314 | IIIC | 49 | |||||||
#323 | IIIC | 44 | |||||||
#368 | IV | 46 | |||||||
#374 | IIIC | 52 | |||||||
#378 | IIIB | 52 | |||||||
c.4357+2T>G | r.[=,4186_4357del] p.Arg1377Tyrfs*2 | S | #95 | IIIC | Germline | rs80358152 | Pathogenic [NS] | 49 | |
c.4484+1G>A | r.[=,4358_4484del] p.Glu1462Ter | S | #395 | IIIC | Germline | rs80358063 | Pathogenic [NS] | 49 | |
BRCA2 | c.2806_2809del | p.Ala938Profs*21 | FS | #164 | IIIC | Germline | rs80359351 | Pathogenic [NR] | 50 |
c.5042_5043del | p.Val1681Glufs*7 | FS | #178 | IIIC | Germline | rs80359478 | Pathogenic [class 5] | 49 | |
c.9097delA | p.Thr3033Leufs*29 | FS | #168 | IIIC | Somatic | rs762120301 | Pathogenic [class 5] | 16.5 | |
c.9976A>T | p.Lys3326Ter | N | #398 | IV | Germline | rs11571833 | ? B [class 2] | 44 | |
#411 | IIIC | 48 | |||||||
BRCA1 (2 variants) | c.[594-2A>C; 641A>G] | r.[=,594_670del] p.Gly183_Lys223del | S | #78 | NR | Germline | rs80358033rs55680408 | Low riskvariant [NS] | 5252 |
c.3756_3759del | p.Ser1253Argfs*10 | FS | #169 | IIIC | Somatic | rs80357868 | Pathogenic [class 5] | 10 | |
c.4484+1G>A | r.[=,4358_4484del]p.Glu1462Ter | S | rs80358063 | Pathogenic [NS] | 12 | ||||
c.1693G>T | p.Glu565Ter | N | #170 | IIIC | Somatic | rs886039963 | Pathogenic [class 5] | 14 | |
c.3756_3759del | p.Ser1253Argfs*10 | FS | rs80357868 | Pathogenic [class 5] | 20 | ||||
c.181T>G | p.Cys61Gly | M | #171 | IIIC | Somatic | rs28897672 | Pathogenic [class 5] | 10 | |
c.3756_3759del | p.Ser1253Argfs*10 | FS | rs80357868 | Pathogenic [class 5] | 10 | ||||
BRCA1 (3 variants) | c.181T>G | p.Cys61Gly | M | #175 | IIIC | Somatic | rs28897672 | Pathogenic [class 5] | 7 |
c.3756_3759del | p.Ser1253Argfs*10 | FS | rs80357868 | Pathogenic [class 5] | 4 | ||||
c.4484+1G>A | r.[=,4358_4484del] p.Glu1462Ter | S | rs80358063 | Pathogenic [NS] | 5 | ||||
BRCA1 & BRCA2 (2 variants) | c.181T>G | p.Cys61Gly | M | #8 | IV | Somatic | rs28897672 | Pathogenic [class 5] | 21 |
c.3974_3975insTGCT | p.Thr1325Serfs*4 | FS | Germline | - | Absent C [NR] | 47 | |||
c.4357+2T>G | r.[=,4186_4357del] p.Arg1377Tyrfs*2 | S | #92 | IIIC | Germline | rs80358152 | Pathogenic [NS] | 48 | |
c.9976A>T | p.Lys3326Ter | N | Germline | rs11571833 | ? B [class 2] | 50 |
A Variants’ classification reported in the publicly available databases, including the BIC database, BRCA Share™ database, ClinVar and/or the HGMD; variants’ classification reported in the BRCA Exchange database curated by the ENIGMA consortium was presented in square brackets; B this variant should be re-classified in the publicly available databases from prior benign/little clinical significance to likely pathogenic based on the recent findings [18]; C reported as novel pathogenic variant in 1/144 female patient with hereditary breast cancer, but no co-segregation study provided [30]; however, this variant fulfilled the followings ACMG recommendations [29]: PVS1, PM2, PM4, PP3 and PP4, thus it can be clearly classified as pathogenic. FS: frameshift; N: nonsense; M: missense; S: splice; NR: not reported; NS: presence of the variant in the database, but its clinical significance has not yet been specified.