Genetic variant summation

This tool provides access to summary values of DNA mutation analyzed from exome sequencing. Variant percentages for a single gene for each cell line are calculated using the percent presence of each variant. If there are multiple variants present, it is presumed that these probabilities are independent, and that the maximum effect of the variant(s) may go to 100%. The equation used to calculate this probability for each cell line is: Gene variant percentage per cell = 1 - [ (1 - P1) x (1 - P2) ... (1 - Pn) ] where P1 is the percentage for variant 1, P2 is the percentage for variant 2, etc. and percentages are taken as fractions (e.g. 25%=0.25).

Variant percentages for multiple genes are simple summations of the single gene values for each cell line. These percentages can take values greater than 100%. The assumption is that the pathway or functional grouping of genes will be increasingly perturbed as more of the genes included in it are altered in a functionally meaningful manner.

The tool provides an Excel spreadsheet for each gene that includes:

  1. a summation of amino acid changing DNA variants (missense, splicesense, frameshift, premature stops, or nucleotides inserted or deleted in factors of 3 that do not occur in segmental duplications, or map to more than one genomic location) for up to 150 genes selected by the user
  2. a summation of amino acid changing variants restricted to those variants that are proposed to be deleterious and absent from non-cancerous genomes (the 1000 Genomes and EPS5400). Deleterious status is determined by SIFT or polyphen-2 prediction, or by the presence of a frameshift, splicing, or nonsense change.

Table 1: Summation of amino acid changing variant(s)

Cell line Summation

BR:MCF7 0
BR:MDA_MB_231 147
BR:HS578T 100
BR:BT_549 100
BR:T47D 100
CNS:SF_268 100
CNS:SF_295 100
CNS:SF_539 100
CNS:SNB_19 100
CNS:SNB_75 100
CNS:U251 69
CO:COLO205 71
CO:HCC_2998 123
CO:HCT_116 70
CO:HCT_15 116
CO:HT29 198
CO:KM12 56
CO:SW_620 100
LE:CCRF_CEM 72
LE:HL_60 0
LE:K_562 100
LE:MOLT_4 77
LE:RPMI_8226 144
LE:SR 50
ME:LOXIMVI 87
ME:MALME_3M 77
ME:M14 122
ME:SK_MEL_2 79
ME:SK_MEL_28 278
ME:SK_MEL_5 42
ME:UACC_257 63
ME:UACC_62 100
ME:MDA_MB_435 155
ME:MDA_N 130
LC:A549 0
LC:EKVX 100
LC:HOP_62 100
LC:HOP_92 100
LC:NCI_H226 50
LC:NCI_H23 100
LC:NCI_H322M 100
LC:NCI_H460 0
LC:NCI_H522 100
OV:IGROV1 0
OV:OVCAR_3 100
OV:OVCAR_4 0
OV:OVCAR_5 0
OV:OVCAR_8 100
OV:SK_OV_3 0
OV:NCI_ADR_RES 100
PR:PC_3 78
PR:DU_145 83
RE:786_0 75
RE:A498 0
RE:ACHN 0
RE:CAKI_1 0
RE:RXF_393 100
RE:SN12C 100
RE:TK_10 100
RE:UO_31 0