Incidental Mutation 'R1301:Otog'
ID 158369
Institutional Source Beutler Lab
Gene Symbol Otog
Ensembl Gene ENSMUSG00000009487
Gene Name otogelin
Synonyms Otgn
MMRRC Submission 039367-MU
Accession Numbers
Essential gene? Probably essential (E-score: 0.770) question?
Stock # R1301 (G1)
Quality Score 225
Status Validated
Chromosome 7
Chromosomal Location 45890411-45960858 bp(+) (GRCm39)
Type of Mutation missense
DNA Base Change (assembly) C to T at 45939113 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Arginine to Cysteine at position 2048 (R2048C)
Ref Sequence ENSEMBL: ENSMUSP00000130949 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000164538]
AlphaFold no structure available at present
Predicted Effect probably damaging
Transcript: ENSMUST00000164538
AA Change: R2048C

PolyPhen 2 Score 1.000 (Sensitivity: 0.00; Specificity: 1.00)
SMART Domains Protein: ENSMUSP00000130949
Gene: ENSMUSG00000009487
AA Change: R2048C

DomainStartEndE-ValueType
signal peptide 1 25 N/A INTRINSIC
low complexity region 72 85 N/A INTRINSIC
VWD 128 288 7.98e-45 SMART
C8 330 404 1.05e-13 SMART
VWC 463 505 1.24e0 SMART
VWD 490 655 4.94e-50 SMART
C8 693 758 1.23e-5 SMART
Pfam:TIL 767 831 3.4e-13 PFAM
VWC 935 983 1.83e0 SMART
VWD 962 1118 6.05e-45 SMART
C8 1153 1227 1.02e-34 SMART
Pfam:AbfB 1270 1384 7.5e-10 PFAM
low complexity region 1488 1513 N/A INTRINSIC
low complexity region 1524 1536 N/A INTRINSIC
low complexity region 1560 1578 N/A INTRINSIC
low complexity region 1637 1644 N/A INTRINSIC
low complexity region 1677 1696 N/A INTRINSIC
low complexity region 1731 1748 N/A INTRINSIC
VWD 2087 2251 2.37e-29 SMART
C8 2287 2356 4.93e-19 SMART
low complexity region 2443 2449 N/A INTRINSIC
CT 2828 2911 3.46e-28 SMART
Meta Mutation Damage Score 0.5737 question?
Coding Region Coverage
  • 1x: 98.7%
  • 3x: 97.5%
  • 10x: 93.3%
  • 20x: 82.6%
Validation Efficiency 96% (67/70)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] The protein encoded by this gene is a component of the acellular membranes of the inner ear. Disruption of the orthologous mouse gene shows that it plays a role in auditory and vestibular functions. It is involved in fibrillar network organization, the anchoring of otoconial membranes and cupulae to the neuroepithelia, and likely in sound stimulation resistance. Mutations in this gene cause autosomal recessive nonsyndromic deafness, type 18B. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2014]
PHENOTYPE: Homozygotes for a number of different spontaneous and targeted mutations exhibit vestibular dysfunction, including circling, head tilt, impaired balance, coordination, and placing response. Mutants have impaired hearing, decreased brain stem auditory evoked potential, and ear abnormalities. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 56 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Aadacl4fm2 T A 4: 144,291,635 (GRCm39) I24L probably benign Het
Ano1 A G 7: 144,187,426 (GRCm39) W447R possibly damaging Het
Blm T A 7: 80,105,165 (GRCm39) K103* probably null Het
Camta2 A G 11: 70,567,230 (GRCm39) I675T probably benign Het
Catsperz G A 19: 6,902,450 (GRCm39) R15C probably damaging Het
Chd1l T C 3: 97,510,964 (GRCm39) probably benign Het
Corin C A 5: 72,462,276 (GRCm39) E844D possibly damaging Het
Cyb5rl T G 4: 106,938,104 (GRCm39) M127R probably damaging Het
Dcdc2a A T 13: 25,286,569 (GRCm39) N164I possibly damaging Het
Dnah6 A G 6: 73,185,528 (GRCm39) probably null Het
Emilin2 T C 17: 71,562,960 (GRCm39) probably benign Het
Epb41l2 T A 10: 25,319,800 (GRCm39) V211D probably damaging Het
Fbxo47 C T 11: 97,759,427 (GRCm39) M166I probably benign Het
Golm1 T C 13: 59,786,187 (GRCm39) D335G probably damaging Het
Gpn1 T A 5: 31,660,773 (GRCm39) M188K probably damaging Het
Gpr84 T A 15: 103,217,646 (GRCm39) S144C probably damaging Het
Grm8 G T 6: 27,981,200 (GRCm39) Q237K possibly damaging Het
Gsdmd C A 15: 75,738,908 (GRCm39) probably null Het
Hmgcr G A 13: 96,795,528 (GRCm39) T347I probably damaging Het
Hsd17b7 T A 1: 169,788,774 (GRCm39) probably benign Het
Hsd3b9 G A 3: 98,354,182 (GRCm39) Q106* probably null Het
Klhl7 T G 5: 24,364,489 (GRCm39) W508G probably damaging Het
Lrp2 C A 2: 69,258,948 (GRCm39) D4581Y probably damaging Het
Lrrc7 T C 3: 157,840,968 (GRCm39) N1357D probably benign Het
Macf1 T C 4: 123,380,451 (GRCm39) probably benign Het
Mroh7 T C 4: 106,577,692 (GRCm39) T329A probably damaging Het
Mroh9 C T 1: 162,871,552 (GRCm39) probably null Het
Mta2 A G 19: 8,926,550 (GRCm39) probably benign Het
Myo3a A T 2: 22,271,906 (GRCm39) probably benign Het
Nrip2 A G 6: 128,384,352 (GRCm39) D153G probably benign Het
Nup133 T C 8: 124,644,156 (GRCm39) probably benign Het
Nup210 C T 6: 91,019,329 (GRCm39) V259M possibly damaging Het
Or10ak14 C T 4: 118,610,816 (GRCm39) M308I probably benign Het
Or5b112 A T 19: 13,319,211 (GRCm39) I30F probably benign Het
Or9i14 A T 19: 13,792,726 (GRCm39) V76D probably damaging Het
Pacc1 T C 1: 191,080,632 (GRCm39) V284A probably damaging Het
Paqr7 T C 4: 134,235,124 (GRCm39) L327P probably damaging Het
Parl A G 16: 20,105,676 (GRCm39) S249P probably damaging Het
Phc1 A G 6: 122,302,833 (GRCm39) I230T probably benign Het
Pitpnm1 T G 19: 4,160,831 (GRCm39) probably null Het
Plpp1 A G 13: 112,971,477 (GRCm39) Y48C probably damaging Het
Pxdc1 A G 13: 34,812,870 (GRCm39) F194L probably benign Het
Rp1 A T 1: 4,416,159 (GRCm39) V1651D possibly damaging Het
Serpinb1c T A 13: 33,080,943 (GRCm39) R47* probably null Het
Sis T C 3: 72,853,915 (GRCm39) T521A possibly damaging Het
Slc16a9 A G 10: 70,118,308 (GRCm39) D209G probably benign Het
Slc26a4 A T 12: 31,575,567 (GRCm39) C706* probably null Het
Slc37a2 A G 9: 37,148,177 (GRCm39) V325A probably benign Het
Speg T A 1: 75,378,145 (GRCm39) D784E probably damaging Het
Sycp1 T C 3: 102,827,938 (GRCm39) I270V probably benign Het
Tatdn2 T A 6: 113,681,076 (GRCm39) F309I probably damaging Het
Tmem67 T C 4: 12,089,400 (GRCm39) probably benign Het
Trpm1 T A 7: 63,852,801 (GRCm39) probably null Het
Wrn T C 8: 33,782,714 (GRCm39) R496G probably damaging Het
Zfhx2 A G 14: 55,300,854 (GRCm39) V2299A probably benign Het
Zfp819 T A 7: 43,266,524 (GRCm39) S260T possibly damaging Het
Other mutations in Otog
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00516:Otog APN 7 45,900,706 (GRCm39) missense probably damaging 1.00
IGL00725:Otog APN 7 45,923,516 (GRCm39) missense probably damaging 1.00
IGL00757:Otog APN 7 45,939,552 (GRCm39) missense probably damaging 1.00
IGL00822:Otog APN 7 45,945,304 (GRCm39) missense probably benign 0.24
IGL01354:Otog APN 7 45,939,150 (GRCm39) missense probably damaging 1.00
IGL01567:Otog APN 7 45,926,039 (GRCm39) splice site probably benign
IGL02034:Otog APN 7 45,945,417 (GRCm39) nonsense probably null
IGL02090:Otog APN 7 45,949,571 (GRCm39) missense probably damaging 1.00
IGL02132:Otog APN 7 45,954,903 (GRCm39) missense probably damaging 0.99
IGL02148:Otog APN 7 45,950,011 (GRCm39) missense probably damaging 1.00
IGL02173:Otog APN 7 45,926,165 (GRCm39) splice site probably benign
IGL02199:Otog APN 7 45,926,775 (GRCm39) missense possibly damaging 0.90
IGL02216:Otog APN 7 45,950,892 (GRCm39) missense probably damaging 1.00
IGL02322:Otog APN 7 45,950,881 (GRCm39) missense probably benign 0.01
IGL02330:Otog APN 7 45,937,493 (GRCm39) missense possibly damaging 0.84
IGL02529:Otog APN 7 45,909,381 (GRCm39) missense probably damaging 0.99
IGL02898:Otog APN 7 45,959,562 (GRCm39) missense probably damaging 1.00
IGL02970:Otog APN 7 45,945,291 (GRCm39) missense probably benign 0.11
IGL03085:Otog APN 7 45,955,346 (GRCm39) critical splice donor site probably null
IGL03108:Otog APN 7 45,900,762 (GRCm39) missense probably damaging 1.00
IGL03275:Otog APN 7 45,955,654 (GRCm39) missense probably damaging 1.00
R0282_Otog_616 UTSW 7 45,926,917 (GRCm39) missense possibly damaging 0.93
R0636_otog_678 UTSW 7 45,913,652 (GRCm39) critical splice donor site probably null
R1029_otog_141 UTSW 7 45,924,019 (GRCm39) missense probably damaging 1.00
BB010:Otog UTSW 7 45,959,571 (GRCm39) missense probably damaging 1.00
BB020:Otog UTSW 7 45,959,571 (GRCm39) missense probably damaging 1.00
I1329:Otog UTSW 7 45,895,927 (GRCm39) missense probably benign 0.02
IGL02984:Otog UTSW 7 45,954,932 (GRCm39) missense probably damaging 0.98
PIT4472001:Otog UTSW 7 45,945,273 (GRCm39) missense probably damaging 1.00
R0032:Otog UTSW 7 45,953,655 (GRCm39) missense probably damaging 0.97
R0032:Otog UTSW 7 45,937,637 (GRCm39) nonsense probably null
R0105:Otog UTSW 7 45,937,790 (GRCm39) missense possibly damaging 0.79
R0164:Otog UTSW 7 45,953,655 (GRCm39) missense probably damaging 0.97
R0164:Otog UTSW 7 45,953,655 (GRCm39) missense probably damaging 0.97
R0165:Otog UTSW 7 45,953,655 (GRCm39) missense probably damaging 0.97
R0166:Otog UTSW 7 45,953,655 (GRCm39) missense probably damaging 0.97
R0167:Otog UTSW 7 45,953,655 (GRCm39) missense probably damaging 0.97
R0240:Otog UTSW 7 45,913,456 (GRCm39) splice site probably null
R0240:Otog UTSW 7 45,913,456 (GRCm39) splice site probably null
R0242:Otog UTSW 7 45,916,805 (GRCm39) missense probably damaging 0.98
R0242:Otog UTSW 7 45,916,805 (GRCm39) missense probably damaging 0.98
R0282:Otog UTSW 7 45,926,917 (GRCm39) missense possibly damaging 0.93
R0392:Otog UTSW 7 45,899,499 (GRCm39) missense probably benign 0.00
R0436:Otog UTSW 7 45,915,360 (GRCm39) splice site probably benign
R0441:Otog UTSW 7 45,955,301 (GRCm39) missense probably damaging 1.00
R0499:Otog UTSW 7 45,923,256 (GRCm39) missense probably damaging 1.00
R0530:Otog UTSW 7 45,947,668 (GRCm39) missense probably damaging 0.98
R0541:Otog UTSW 7 45,918,673 (GRCm39) splice site probably benign
R0600:Otog UTSW 7 45,900,819 (GRCm39) splice site probably benign
R0626:Otog UTSW 7 45,920,797 (GRCm39) missense possibly damaging 0.95
R0636:Otog UTSW 7 45,913,652 (GRCm39) critical splice donor site probably null
R0764:Otog UTSW 7 45,949,918 (GRCm39) missense probably benign 0.00
R0833:Otog UTSW 7 45,918,786 (GRCm39) missense possibly damaging 0.94
R0836:Otog UTSW 7 45,918,786 (GRCm39) missense possibly damaging 0.94
R0844:Otog UTSW 7 45,937,252 (GRCm39) missense possibly damaging 0.53
R1029:Otog UTSW 7 45,924,019 (GRCm39) missense probably damaging 1.00
R1116:Otog UTSW 7 45,950,025 (GRCm39) splice site probably benign
R1134:Otog UTSW 7 45,947,938 (GRCm39) missense probably damaging 1.00
R1183:Otog UTSW 7 45,939,179 (GRCm39) missense probably benign 0.41
R1204:Otog UTSW 7 45,909,335 (GRCm39) missense probably benign 0.16
R1344:Otog UTSW 7 45,924,039 (GRCm39) missense probably damaging 1.00
R1384:Otog UTSW 7 45,923,119 (GRCm39) splice site probably benign
R1418:Otog UTSW 7 45,924,039 (GRCm39) missense probably damaging 1.00
R1432:Otog UTSW 7 45,950,007 (GRCm39) missense probably damaging 1.00
R1479:Otog UTSW 7 45,945,402 (GRCm39) missense possibly damaging 0.75
R1521:Otog UTSW 7 45,908,688 (GRCm39) missense possibly damaging 0.71
R1589:Otog UTSW 7 45,933,332 (GRCm39) missense probably benign 0.18
R1671:Otog UTSW 7 45,911,210 (GRCm39) missense probably damaging 1.00
R1773:Otog UTSW 7 45,937,583 (GRCm39) missense probably benign 0.28
R1806:Otog UTSW 7 45,940,361 (GRCm39) critical splice acceptor site probably null
R1843:Otog UTSW 7 45,895,707 (GRCm39) missense probably damaging 1.00
R1873:Otog UTSW 7 45,918,767 (GRCm39) missense probably damaging 1.00
R1923:Otog UTSW 7 45,895,707 (GRCm39) missense probably damaging 1.00
R1927:Otog UTSW 7 45,895,707 (GRCm39) missense probably damaging 1.00
R2008:Otog UTSW 7 45,913,498 (GRCm39) missense probably benign 0.43
R2048:Otog UTSW 7 45,937,063 (GRCm39) missense probably damaging 1.00
R2131:Otog UTSW 7 45,899,524 (GRCm39) missense probably damaging 1.00
R2153:Otog UTSW 7 45,952,328 (GRCm39) missense probably damaging 1.00
R2240:Otog UTSW 7 45,890,453 (GRCm39) start codon destroyed probably null
R2278:Otog UTSW 7 45,949,468 (GRCm39) missense probably damaging 1.00
R2407:Otog UTSW 7 45,890,964 (GRCm39) missense probably benign 0.10
R2424:Otog UTSW 7 45,947,593 (GRCm39) nonsense probably null
R2513:Otog UTSW 7 45,955,014 (GRCm39) critical splice donor site probably null
R2863:Otog UTSW 7 45,918,730 (GRCm39) missense probably damaging 1.00
R3148:Otog UTSW 7 45,939,593 (GRCm39) missense probably damaging 1.00
R3732:Otog UTSW 7 45,937,792 (GRCm39) missense probably benign 0.03
R3732:Otog UTSW 7 45,937,792 (GRCm39) missense probably benign 0.03
R3733:Otog UTSW 7 45,937,792 (GRCm39) missense probably benign 0.03
R3734:Otog UTSW 7 45,937,792 (GRCm39) missense probably benign 0.03
R3855:Otog UTSW 7 45,923,184 (GRCm39) missense possibly damaging 0.65
R3880:Otog UTSW 7 45,937,445 (GRCm39) missense possibly damaging 0.93
R4081:Otog UTSW 7 45,937,723 (GRCm39) missense possibly damaging 0.92
R4349:Otog UTSW 7 45,923,613 (GRCm39) missense probably damaging 0.99
R4382:Otog UTSW 7 45,939,122 (GRCm39) missense probably damaging 1.00
R4392:Otog UTSW 7 45,934,548 (GRCm39) missense probably damaging 0.98
R4520:Otog UTSW 7 45,890,477 (GRCm39) unclassified probably benign
R4569:Otog UTSW 7 45,959,571 (GRCm39) missense probably damaging 1.00
R4580:Otog UTSW 7 45,937,225 (GRCm39) missense possibly damaging 0.78
R4672:Otog UTSW 7 45,939,210 (GRCm39) missense probably damaging 0.98
R4764:Otog UTSW 7 45,937,943 (GRCm39) missense probably benign 0.29
R4910:Otog UTSW 7 45,947,958 (GRCm39) missense probably damaging 1.00
R4910:Otog UTSW 7 45,913,486 (GRCm39) missense probably damaging 1.00
R4913:Otog UTSW 7 45,913,526 (GRCm39) missense probably benign 0.31
R4975:Otog UTSW 7 45,937,415 (GRCm39) missense probably benign 0.00
R4996:Otog UTSW 7 45,954,934 (GRCm39) nonsense probably null
R4996:Otog UTSW 7 45,948,030 (GRCm39) missense possibly damaging 0.51
R5116:Otog UTSW 7 45,923,191 (GRCm39) missense probably benign 0.34
R5138:Otog UTSW 7 45,899,430 (GRCm39) missense possibly damaging 0.61
R5169:Otog UTSW 7 45,947,572 (GRCm39) missense probably benign 0.06
R5239:Otog UTSW 7 45,936,859 (GRCm39) missense probably benign 0.15
R5277:Otog UTSW 7 45,896,045 (GRCm39) missense possibly damaging 0.89
R5287:Otog UTSW 7 45,918,753 (GRCm39) missense probably damaging 0.98
R5299:Otog UTSW 7 45,938,275 (GRCm39) missense probably benign 0.16
R5378:Otog UTSW 7 45,904,428 (GRCm39) missense probably damaging 1.00
R5382:Otog UTSW 7 45,898,428 (GRCm39) missense probably damaging 1.00
R5487:Otog UTSW 7 45,938,192 (GRCm39) missense probably benign 0.27
R5507:Otog UTSW 7 45,911,123 (GRCm39) missense probably damaging 1.00
R5517:Otog UTSW 7 45,923,995 (GRCm39) missense probably damaging 1.00
R5643:Otog UTSW 7 45,936,871 (GRCm39) missense probably damaging 1.00
R5757:Otog UTSW 7 45,890,545 (GRCm39) critical splice donor site probably null
R5910:Otog UTSW 7 45,948,022 (GRCm39) missense possibly damaging 0.94
R6019:Otog UTSW 7 45,938,374 (GRCm39) missense probably benign 0.00
R6150:Otog UTSW 7 45,913,483 (GRCm39) missense possibly damaging 0.82
R6225:Otog UTSW 7 45,898,458 (GRCm39) missense possibly damaging 0.67
R6271:Otog UTSW 7 45,901,464 (GRCm39) missense probably damaging 1.00
R6317:Otog UTSW 7 45,950,639 (GRCm39) missense probably damaging 1.00
R6454:Otog UTSW 7 45,955,241 (GRCm39) missense probably damaging 1.00
R6640:Otog UTSW 7 45,911,167 (GRCm39) missense possibly damaging 0.92
R6753:Otog UTSW 7 45,898,495 (GRCm39) missense probably benign 0.06
R6788:Otog UTSW 7 45,947,741 (GRCm39) missense probably damaging 1.00
R6859:Otog UTSW 7 45,923,205 (GRCm39) missense probably damaging 0.96
R7033:Otog UTSW 7 45,916,822 (GRCm39) critical splice donor site probably null
R7071:Otog UTSW 7 45,916,747 (GRCm39) missense probably damaging 1.00
R7084:Otog UTSW 7 45,947,990 (GRCm39) nonsense probably null
R7116:Otog UTSW 7 45,947,689 (GRCm39) missense probably damaging 0.99
R7202:Otog UTSW 7 45,937,474 (GRCm39) missense probably damaging 0.97
R7365:Otog UTSW 7 45,947,732 (GRCm39) missense probably damaging 1.00
R7468:Otog UTSW 7 45,913,543 (GRCm39) missense probably benign
R7475:Otog UTSW 7 45,916,700 (GRCm39) missense probably damaging 0.99
R7502:Otog UTSW 7 45,948,039 (GRCm39) missense probably damaging 1.00
R7558:Otog UTSW 7 45,952,584 (GRCm39) missense probably damaging 0.99
R7577:Otog UTSW 7 45,937,279 (GRCm39) missense possibly damaging 0.62
R7651:Otog UTSW 7 45,891,185 (GRCm39) missense probably benign 0.00
R7689:Otog UTSW 7 45,901,480 (GRCm39) missense probably damaging 1.00
R7806:Otog UTSW 7 45,935,200 (GRCm39) missense probably benign
R7933:Otog UTSW 7 45,959,571 (GRCm39) missense probably damaging 1.00
R8021:Otog UTSW 7 45,916,766 (GRCm39) missense probably damaging 0.98
R8082:Otog UTSW 7 45,939,143 (GRCm39) missense probably damaging 1.00
R8531:Otog UTSW 7 45,901,473 (GRCm39) missense probably damaging 0.99
R8772:Otog UTSW 7 45,934,352 (GRCm39) missense probably damaging 1.00
R8816:Otog UTSW 7 45,950,905 (GRCm39) missense possibly damaging 0.92
R8842:Otog UTSW 7 45,895,948 (GRCm39) missense probably damaging 1.00
R8987:Otog UTSW 7 45,936,878 (GRCm39) missense probably benign 0.43
R8988:Otog UTSW 7 45,959,571 (GRCm39) missense probably damaging 1.00
R9010:Otog UTSW 7 45,949,894 (GRCm39) missense probably benign 0.00
R9025:Otog UTSW 7 45,937,520 (GRCm39) missense probably benign 0.13
R9131:Otog UTSW 7 45,952,597 (GRCm39) nonsense probably null
R9179:Otog UTSW 7 45,937,885 (GRCm39) missense possibly damaging 0.65
R9334:Otog UTSW 7 45,909,353 (GRCm39) missense possibly damaging 0.95
R9365:Otog UTSW 7 45,920,688 (GRCm39) missense probably damaging 1.00
R9408:Otog UTSW 7 45,916,721 (GRCm39) missense possibly damaging 0.79
R9418:Otog UTSW 7 45,938,024 (GRCm39) missense probably benign 0.41
R9465:Otog UTSW 7 45,955,299 (GRCm39) missense possibly damaging 0.80
R9496:Otog UTSW 7 45,890,505 (GRCm39) missense unknown
R9632:Otog UTSW 7 45,915,143 (GRCm39) missense probably benign 0.27
R9656:Otog UTSW 7 45,959,567 (GRCm39) missense probably damaging 1.00
RF024:Otog UTSW 7 45,937,093 (GRCm39) missense probably damaging 1.00
X0062:Otog UTSW 7 45,909,345 (GRCm39) missense probably damaging 1.00
Z1177:Otog UTSW 7 45,939,164 (GRCm39) missense probably damaging 1.00
Z1177:Otog UTSW 7 45,923,962 (GRCm39) missense probably damaging 1.00
Z1177:Otog UTSW 7 45,912,276 (GRCm39) missense possibly damaging 0.80
Z1177:Otog UTSW 7 45,959,409 (GRCm39) missense probably damaging 1.00
Predicted Primers PCR Primer
(F):5'- AGCGAGCTTTGGACCGTGAGAATG -3'
(R):5'- TTTGTCAGGGCAGGAGTCACAGTG -3'

Sequencing Primer
(F):5'- catcaattaaaacaacccaccac -3'
(R):5'- AAAAGACACAGAGGCTCTGACTG -3'
Posted On 2014-02-18