I have a VCF from the IOT server analyzer which look like (I paste just one entry for a call of a variant in KRAS gene):

CHROM   POS ID  REF ALT QUAL    FILTER  INFO    FORMAT
chr12   25398280 COSM536;COSM535;COSM12655;COSM537;COSM12721;COSM531;COSM87280;COSM532;COSM528;COSM523;COSM521;COSM25081;COSM516;COSM518;COSM517;COSM511    GCCACCAG    AACACCAG,ACCACCAG,ATCACCAG,CCCACCAG,GCCACAAG,GCCACCAA,GCCACCACCAG,GCCACGAG,GCCACTAG,GCCATAAG,GCCATCAG,GCCGCCAG,GCTACCAG,GTCACCAG,TCCACCAG,TTCACCAG  37011.90    PASS    AF=0,0.000308356,0,0,0.692569,0.00185014,0,0.000616713,0.000616713,0.00185014,0.00308356,0.000308356,0.000308356,0.0021585,0,0;AO=0,1,0,0,2241,6,0,2,2,6,10,1,1,7,0,0;DP=3294;FAO=0,1,0,0,2246,6,0,2,2,6,10,1,1,7,0,0;FDP=3243;FDVR=5,5,5,10,5,10,10,5,5,5,10,5,5,10,5,5;FR=.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.;FRO=961;FSAF=0,0,0,0,1153,3,0,0,0,4,3,1,0,1,0,0;FSAR=0,1,0,0,1093,3,0,2,2,2,7,0,1,6,0,0;FSRF=500;FSRR=461;FUNC=[{'origPos':'25398280','origRef':'GCCACCAG','normalizedRef':'C','gene':'KRAS','normalizedPos':'25398285','normalizedAlt':'A','polyphen':'1.0','gt':'pos','codon':'TGT','coding':'c.34G>T','sift':'0.01','grantham':'159.0','transcript':'NM_033360.3','function':'missense','protein':'p.Gly12Cys','location':'exonic','origAlt':'GCCACAAG','exon':'2'}];FWDB=0.00636207,-0.0290886,-0.0202011,-0.0039864,-0.00377511,-0.0316869,-0.00452498,-0.00452004,-0.0474076,-0.0194318,-0.0258133,-0.00942904,-0.0131078,-0.0130281,-0.0816905,-0.0359171;FXX=0.0154826;HRUN=1,1,1,1,2,1,0,2,2,2,2,1,2,2,1,1;HS;HS_ONLY=0;LEN=2,1,2,1,1,1,3,1,1,2,1,1,1,1,1,2;MLLD=152.15,93.9388,182.619,378.816,84.0614,371.393,214.047,102.979,41.516,59.0083,314.834,99.3045,232.878,156.428,143.283,201.003;OALT=AA,A,AT,C,A,A,ACC,G,T,TA,T,G,T,T,T,TT;OID=COSM12721,COSM536,COSM531,COSM535,COSM516,COSM511,COSM12655,COSM518,COSM517,COSM25081,COSM521,COSM523,COSM528,COSM532,COSM537,COSM87280;OMAPALT=AACACCAG,ACCACCAG,ATCACCAG,CCCACCAG,GCCACAAG,GCCACCAA,GCCACCACCAG,GCCACGAG,GCCACTAG,GCCATAAG,GCCATCAG,GCCGCCAG,GCTACCAG,GTCACCAG,TCCACCAG,TTCACCAG;OPOS=25398280,25398280,25398280,25398280,25398285,25398287,25398283,25398285,25398285,25398284,25398284,25398283,25398282,25398281,25398280,25398280;OREF=GC,G,GC,G,C,G,-,C,C,CC,C,A,C,C,G,GC;PB=.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.;PBP=.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.;QD=45.6515;RBI=0.0125377,0.0362959,0.0427309,0.0191885,0.00404772,0.0337496,0.0108564,0.0228843,0.0495759,0.0198897,0.034311,0.0155901,0.0342593,0.0226423,0.0821846,0.0367961;REFB=0.00124768,0.0020683,0.00140984,0.00105771,0.0465428,0.00133263,-0.00173314,0.011244,0.0243957,0.0239083,0.00126847,-0.00176923,0.00355831,0.00138268,0.000713104,-0.000788604;REVB=-0.0108036,-0.0217082,-0.0376543,0.0187698,0.00146033,0.0116179,0.00986839,-0.0224334,-0.0145013,-0.0042432,-0.0226035,-0.0124155,-0.0316525,-0.0185187,-0.008999,-0.00799476;RO=959;SAF=0,0,0,0,1149,3,0,0,0,4,3,1,0,1,0,0;SAR=0,1,0,0,1092,3,0,2,2,2,7,0,1,6,0,0;SRF=498;SRR=461;SSEN=0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;SSEP=0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0;SSSB=0,-0.0228342,0,0,-0.00370131,-0.00454445,0,-0.0445576,-0.0445576,0.0347783,-0.0789845,0.021177,-0.0228342,-0.100903,0,0;STB=0.5,0.990596,0.5,0.5,0.50208,0.520099,0.5,0.995243,0.995243,0.647057,0.714502,0.989819,0.990596,0.864521,0.5,0.5;STBP=1,0.307,1,1,0.728,0.931,1,0.106,0.106,0.516,0.221,0.484,0.307,0.076,1,1;TYPE=mnp,snp,mnp,snp,snp,snp,ins,snp,snp,mnp,snp,snp,snp,snp,snp,mnp;VARB=0,0.0932764,0,0,-0.0201705,0.025506,0,0.0347318,-0.000363269,0.0362913,0.0507715,0.0223018,0.0253235,0.0371567,0,0 GT:GQ:DP:FDP:RO:FRO:AO:FAO:AF:SAR:SAF:SRF:SRR:FSAR:FSAF:FSRF:FSRR   0/5:10795:3294:3243:959:961:0,1,0,0,2241,6,0,2,2,6,10,1,1,7,0,0:0,1,0,0,2246,6,0,2,2,6,10,1,1,7,0,0:0,0.000308356,0,0,0.692569,0.00185014,0,0.000616713,0.000616713,0.00185014,0.00308356,0.000308356,0.000308356,0.0021585,0,0:0,1,0,0,1092,3,0,2,2,2,7,0,1,6,0,0:0,0,0,0,1149,3,0,0,0,4,3,1,0,1,0,0:498:461:0,1,0,0,1093,3,0,2,2,2,7,0,1,6,0,0:0,0,0,0,1153,3,0,0,0,4,3,1,0,1,0,0:500:461

As you may see, for every variant detected (I don't know how) IOT analyzer reports all (or some, I'm not sure) variants from COSMIC and report, for each possible variant its AF. However, as you may see, there is only one COSMIC variant which has enough AF to call (0.692569). I would like to get rid of the rest of the variants. Ideally, I would like to filter also the values for the rest of the ID for the every call but any advice on any step would be kindly appreciated :)

Thanks!

EDIT: As suggested, here is an example of a VCF file: