Incidental Mutation 'R2679:Atrn'
| ID |
250699 |
| Institutional Source |
Beutler Lab
|
| Gene Symbol |
Atrn
|
| Ensembl Gene |
ENSMUSG00000027312 |
| Gene Name |
attractin |
| Synonyms |
Mgca |
| MMRRC Submission |
040432-MU
|
| Accession Numbers |
|
| Essential gene? |
Non essential
(E-score: 0.000)
|
| Stock # |
R2679 (G1)
|
| Quality Score |
225 |
|
Status
|
Validated
|
| Chromosome |
2 |
| Chromosomal Location |
130748415-130872253 bp(+) (GRCm39) |
| Type of Mutation |
critical splice donor site (1 bp from exon) |
| DNA Base Change (assembly) |
G to A
at 130803595 bp (GRCm39)
|
| Zygosity |
Heterozygous |
| Amino Acid Change |
|
| Ref Sequence |
ENSEMBL: ENSMUSP00000028781
(fasta)
|
| Gene Model |
predicted gene model for transcript(s):
[ENSMUST00000028781]
|
| AlphaFold |
Q9WU60 |
| Predicted Effect |
probably null
Transcript: ENSMUST00000028781
|
| SMART Domains |
Protein: ENSMUSP00000028781
Gene: ENSMUSG00000027312
| Domain | Start | End | E-Value | Type |
|---|
|
low complexity region
|
2 |
9 |
N/A |
INTRINSIC |
|
low complexity region
|
51 |
97 |
N/A |
INTRINSIC |
|
EGF
|
99 |
129 |
9.85e-5 |
SMART |
|
CUB
|
131 |
247 |
7.85e-18 |
SMART |
|
EGF
|
248 |
282 |
1.47e1 |
SMART |
|
Pfam:Kelch_1
|
339 |
382 |
1.1e-7 |
PFAM |
|
Pfam:Kelch_5
|
389 |
434 |
2.5e-7 |
PFAM |
|
Pfam:Kelch_6
|
390 |
439 |
3.3e-8 |
PFAM |
|
Pfam:Kelch_1
|
553 |
606 |
8.4e-8 |
PFAM |
|
PSI
|
646 |
693 |
7.41e-7 |
SMART |
|
PSI
|
702 |
747 |
8.64e-8 |
SMART |
|
PSI
|
754 |
799 |
2.11e-2 |
SMART |
|
CLECT
|
787 |
918 |
6.14e-20 |
SMART |
|
PSI
|
931 |
982 |
1.11e-5 |
SMART |
|
PSI
|
985 |
1060 |
1.2e-6 |
SMART |
|
EGF_Lam
|
1062 |
1105 |
1.97e-4 |
SMART |
|
EGF_like
|
1108 |
1154 |
3.9e0 |
SMART |
|
transmembrane domain
|
1278 |
1300 |
N/A |
INTRINSIC |
|
low complexity region
|
1310 |
1322 |
N/A |
INTRINSIC |
|
low complexity region
|
1373 |
1385 |
N/A |
INTRINSIC |
|
| Predicted Effect |
noncoding transcript
Transcript: ENSMUST00000134964
|
| Meta Mutation Damage Score |
0.9592 |
| Coding Region Coverage |
- 1x: 99.2%
- 3x: 98.6%
- 10x: 97.3%
- 20x: 95.0%
|
| Validation Efficiency |
97% (67/69) |
| MGI Phenotype |
FUNCTION: This gene encodes a widely expressed transmembrane glycoprotein that plays important roles in diverse physiological processes such as regulation of hair pigmentation, monocyte-T cell interaction and control of energy homeostasis. The encoded preproprotein undergoes proteolytic processing to generate a mature, functional protein. Certain mutations in this gene are responsible for the mahogany mouse phenotype of dark brown or black coat on a normally agouti background. Mice with loss-of-function mutations in this gene exhibit black coat color, tremor, adiposity, higher basal metabolic rate, juvenile-onset hypomyelination and age-dependent spongiform neurodegeneration of the central nervous system. [provided by RefSeq, Jul 2016]
PHENOTYPE: Some mutant homozygotes exhibit decreases in phaeomelanin synthesis, body weight, and adiposity; increases in locomotion, and abnormal myelination and vacuolation of the central nervous system resulting in tremors. [provided by MGI curators]
|
| Allele List at MGI |
|
| Other mutations in this stock |
Total: 70 list
| Gene | Ref | Var | Chr/Loc | Mutation | Predicted Effect | Zygosity |
|---|
| Asic2 |
A |
G |
11: 81,042,780 (GRCm39) |
V171A |
probably benign |
Het |
| Atf7ip |
A |
T |
6: 136,543,649 (GRCm39) |
I641L |
possibly damaging |
Het |
| Bpifb4 |
T |
C |
2: 153,790,544 (GRCm39) |
I145T |
probably damaging |
Het |
| Bub3 |
A |
G |
7: 131,170,454 (GRCm39) |
|
probably null |
Het |
| Catsperb |
T |
A |
12: 101,429,404 (GRCm39) |
D192E |
probably damaging |
Het |
| Ccdc178 |
G |
A |
18: 21,944,613 (GRCm39) |
H849Y |
possibly damaging |
Het |
| Cd101 |
G |
T |
3: 100,901,079 (GRCm39) |
Q998K |
probably benign |
Het |
| Cep135 |
A |
T |
5: 76,772,507 (GRCm39) |
M631L |
probably benign |
Het |
| Cit |
T |
C |
5: 116,107,174 (GRCm39) |
V1102A |
probably benign |
Het |
| Col4a4 |
G |
A |
1: 82,507,332 (GRCm39) |
T249M |
unknown |
Het |
| Cpne6 |
A |
T |
14: 55,753,786 (GRCm39) |
I415F |
possibly damaging |
Het |
| Cyp4b1 |
T |
C |
4: 115,485,894 (GRCm39) |
I348V |
probably benign |
Het |
| Defb28 |
T |
C |
2: 152,360,202 (GRCm39) |
S6P |
possibly damaging |
Het |
| Dhrs7b |
A |
G |
11: 60,743,344 (GRCm39) |
|
probably benign |
Het |
| Dhx29 |
T |
C |
13: 113,083,910 (GRCm39) |
|
probably null |
Het |
| Egfem1 |
A |
G |
3: 29,724,825 (GRCm39) |
T476A |
probably benign |
Het |
| Enpp5 |
A |
G |
17: 44,396,279 (GRCm39) |
D397G |
probably damaging |
Het |
| Eogt |
G |
A |
6: 97,097,761 (GRCm39) |
T279I |
probably benign |
Het |
| Fnip2 |
G |
A |
3: 79,388,233 (GRCm39) |
H833Y |
probably benign |
Het |
| Gabrr2 |
A |
T |
4: 33,071,435 (GRCm39) |
T92S |
probably damaging |
Het |
| Gm10110 |
T |
A |
14: 90,134,852 (GRCm39) |
|
noncoding transcript |
Het |
| Gria2 |
A |
G |
3: 80,648,260 (GRCm39) |
|
probably benign |
Het |
| Hmcn1 |
G |
T |
1: 150,528,326 (GRCm39) |
T3274N |
possibly damaging |
Het |
| Hnrnpul1 |
C |
T |
7: 25,426,300 (GRCm39) |
R517Q |
probably damaging |
Het |
| Hspa1b |
T |
C |
17: 35,176,279 (GRCm39) |
K569E |
probably benign |
Het |
| Ighv1-82 |
T |
C |
12: 115,916,372 (GRCm39) |
Y46C |
probably damaging |
Het |
| Itga3 |
A |
T |
11: 94,959,136 (GRCm39) |
|
probably benign |
Het |
| Lrrc7 |
T |
A |
3: 157,880,745 (GRCm39) |
R552* |
probably null |
Het |
| Med13 |
A |
G |
11: 86,189,403 (GRCm39) |
S1169P |
probably benign |
Het |
| Muc4 |
T |
A |
16: 32,577,846 (GRCm39) |
D2374E |
unknown |
Het |
| Myl9 |
T |
A |
2: 156,622,426 (GRCm39) |
L70Q |
probably damaging |
Het |
| Nebl |
C |
T |
2: 17,429,402 (GRCm39) |
S243N |
probably benign |
Het |
| Nfat5 |
A |
G |
8: 108,071,546 (GRCm39) |
Y314C |
probably damaging |
Het |
| Nr2f6 |
T |
A |
8: 71,827,380 (GRCm39) |
D307V |
probably damaging |
Het |
| Nrp2 |
T |
C |
1: 62,824,237 (GRCm39) |
S781P |
probably benign |
Het |
| Nub1 |
C |
T |
5: 24,897,923 (GRCm39) |
T103I |
possibly damaging |
Het |
| Or4b1d |
A |
T |
2: 89,968,889 (GRCm39) |
V198D |
possibly damaging |
Het |
| Or51h5 |
T |
A |
7: 102,577,238 (GRCm39) |
Y134* |
probably null |
Het |
| Pex5l |
A |
T |
3: 33,136,201 (GRCm39) |
M6K |
probably benign |
Het |
| Pgm3 |
A |
C |
9: 86,451,374 (GRCm39) |
C93W |
probably benign |
Het |
| Pkhd1 |
A |
G |
1: 20,279,406 (GRCm39) |
S2971P |
probably benign |
Het |
| Pkhd1l1 |
T |
C |
15: 44,408,782 (GRCm39) |
L2423P |
probably damaging |
Het |
| Prkce |
A |
G |
17: 86,483,654 (GRCm39) |
|
probably benign |
Het |
| Ptbp3 |
A |
G |
4: 59,494,615 (GRCm39) |
|
probably benign |
Het |
| Ptgis |
T |
A |
2: 167,050,113 (GRCm39) |
M339L |
probably benign |
Het |
| Pxdn |
T |
C |
12: 30,025,568 (GRCm39) |
|
probably benign |
Het |
| Rab44 |
T |
A |
17: 29,363,451 (GRCm39) |
|
probably null |
Het |
| Ric1 |
A |
G |
19: 29,581,430 (GRCm39) |
S1275G |
probably benign |
Het |
| Rnf213 |
C |
A |
11: 119,350,764 (GRCm39) |
|
probably null |
Het |
| Rtn4rl1 |
A |
T |
11: 75,156,552 (GRCm39) |
E328V |
probably benign |
Het |
| Saraf |
C |
T |
8: 34,632,428 (GRCm39) |
T169I |
probably damaging |
Het |
| Sbk2 |
T |
A |
7: 4,960,119 (GRCm39) |
|
probably null |
Het |
| Setd1a |
T |
G |
7: 127,394,896 (GRCm39) |
|
probably benign |
Het |
| Sit1 |
A |
G |
4: 43,483,157 (GRCm39) |
Y73H |
probably damaging |
Het |
| Slc44a4 |
T |
C |
17: 35,142,399 (GRCm39) |
|
probably benign |
Het |
| Spopfm1 |
A |
T |
3: 94,173,217 (GRCm39) |
Y75F |
probably damaging |
Het |
| Tas2r125 |
A |
G |
6: 132,887,190 (GRCm39) |
T193A |
probably benign |
Het |
| Tbc1d9b |
T |
A |
11: 50,052,528 (GRCm39) |
|
probably null |
Het |
| Tcf7l1 |
G |
T |
6: 72,604,403 (GRCm39) |
H580Q |
probably benign |
Het |
| Tead1 |
T |
G |
7: 112,456,053 (GRCm39) |
S115A |
probably damaging |
Het |
| Top2b |
G |
A |
14: 16,413,947 (GRCm38) |
G29D |
probably damaging |
Het |
| Trpv4 |
A |
T |
5: 114,773,613 (GRCm39) |
C250S |
probably damaging |
Het |
| U2surp |
A |
C |
9: 95,358,285 (GRCm39) |
I655S |
possibly damaging |
Het |
| Ube2a |
G |
A |
X: 36,138,360 (GRCm39) |
|
probably benign |
Het |
| Ubl7 |
A |
G |
9: 57,821,882 (GRCm39) |
D77G |
probably damaging |
Het |
| Vmn1r91 |
T |
C |
7: 19,835,983 (GRCm39) |
C301R |
probably damaging |
Het |
| Vmn2r90 |
A |
T |
17: 17,933,131 (GRCm39) |
R230S |
possibly damaging |
Het |
| Wdfy3 |
T |
A |
5: 102,017,902 (GRCm39) |
E2560V |
probably damaging |
Het |
| Zfp273 |
C |
T |
13: 67,973,895 (GRCm39) |
A341V |
probably benign |
Het |
| Zfp512 |
C |
T |
5: 31,622,798 (GRCm39) |
A33V |
probably benign |
Het |
|
| Other mutations in Atrn |
| Allele | Source | Chr | Coord | Type | Predicted Effect | PPH Score |
|---|
|
IGL00337:Atrn
|
APN |
2 |
130,799,999 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL00571:Atrn
|
APN |
2 |
130,836,968 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL01092:Atrn
|
APN |
2 |
130,789,556 (GRCm39) |
nonsense |
probably null |
|
|
IGL01572:Atrn
|
APN |
2 |
130,844,715 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL01924:Atrn
|
APN |
2 |
130,777,485 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL02116:Atrn
|
APN |
2 |
130,800,009 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL02372:Atrn
|
APN |
2 |
130,844,674 (GRCm39) |
splice site |
probably benign |
|
|
IGL02390:Atrn
|
APN |
2 |
130,862,897 (GRCm39) |
missense |
possibly damaging |
0.82 |
|
IGL02548:Atrn
|
APN |
2 |
130,814,202 (GRCm39) |
missense |
probably damaging |
1.00 |
|
IGL02749:Atrn
|
APN |
2 |
130,789,654 (GRCm39) |
splice site |
probably benign |
|
|
IGL02749:Atrn
|
APN |
2 |
130,812,064 (GRCm39) |
nonsense |
probably null |
|
|
BB010:Atrn
|
UTSW |
2 |
130,836,986 (GRCm39) |
missense |
probably damaging |
1.00 |
|
BB020:Atrn
|
UTSW |
2 |
130,836,986 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R0026:Atrn
|
UTSW |
2 |
130,799,840 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R0403:Atrn
|
UTSW |
2 |
130,748,779 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R0479:Atrn
|
UTSW |
2 |
130,841,085 (GRCm39) |
nonsense |
probably null |
|
|
R0544:Atrn
|
UTSW |
2 |
130,828,746 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R0570:Atrn
|
UTSW |
2 |
130,822,054 (GRCm39) |
missense |
probably benign |
0.01 |
|
R0606:Atrn
|
UTSW |
2 |
130,748,776 (GRCm39) |
missense |
possibly damaging |
0.90 |
|
R0617:Atrn
|
UTSW |
2 |
130,837,005 (GRCm39) |
critical splice donor site |
probably null |
|
|
R0658:Atrn
|
UTSW |
2 |
130,812,147 (GRCm39) |
critical splice donor site |
probably null |
|
|
R1108:Atrn
|
UTSW |
2 |
130,799,834 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R1112:Atrn
|
UTSW |
2 |
130,841,081 (GRCm39) |
missense |
probably benign |
0.04 |
|
R1219:Atrn
|
UTSW |
2 |
130,862,927 (GRCm39) |
missense |
possibly damaging |
0.90 |
|
R1422:Atrn
|
UTSW |
2 |
130,799,834 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R1524:Atrn
|
UTSW |
2 |
130,799,000 (GRCm39) |
missense |
probably benign |
0.15 |
|
R1653:Atrn
|
UTSW |
2 |
130,777,544 (GRCm39) |
missense |
probably benign |
|
|
R1795:Atrn
|
UTSW |
2 |
130,814,208 (GRCm39) |
missense |
probably benign |
|
|
R1807:Atrn
|
UTSW |
2 |
130,824,692 (GRCm39) |
missense |
possibly damaging |
0.94 |
|
R1920:Atrn
|
UTSW |
2 |
130,836,971 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R1921:Atrn
|
UTSW |
2 |
130,836,971 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R1935:Atrn
|
UTSW |
2 |
130,799,955 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R1982:Atrn
|
UTSW |
2 |
130,812,142 (GRCm39) |
missense |
probably benign |
|
|
R2000:Atrn
|
UTSW |
2 |
130,777,508 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R2143:Atrn
|
UTSW |
2 |
130,799,916 (GRCm39) |
missense |
probably benign |
0.03 |
|
R2336:Atrn
|
UTSW |
2 |
130,799,874 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R3426:Atrn
|
UTSW |
2 |
130,862,876 (GRCm39) |
missense |
probably benign |
0.06 |
|
R3909:Atrn
|
UTSW |
2 |
130,836,127 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R4077:Atrn
|
UTSW |
2 |
130,806,850 (GRCm39) |
critical splice donor site |
probably null |
|
|
R4162:Atrn
|
UTSW |
2 |
130,836,148 (GRCm39) |
splice site |
probably benign |
|
|
R4195:Atrn
|
UTSW |
2 |
130,775,332 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R4364:Atrn
|
UTSW |
2 |
130,812,128 (GRCm39) |
missense |
probably benign |
0.39 |
|
R4465:Atrn
|
UTSW |
2 |
130,802,388 (GRCm39) |
missense |
probably benign |
0.08 |
|
R4510:Atrn
|
UTSW |
2 |
130,777,497 (GRCm39) |
nonsense |
probably null |
|
|
R4511:Atrn
|
UTSW |
2 |
130,777,497 (GRCm39) |
nonsense |
probably null |
|
|
R4527:Atrn
|
UTSW |
2 |
130,815,424 (GRCm39) |
missense |
probably benign |
0.10 |
|
R4586:Atrn
|
UTSW |
2 |
130,823,962 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R4592:Atrn
|
UTSW |
2 |
130,841,050 (GRCm39) |
intron |
probably benign |
|
|
R4658:Atrn
|
UTSW |
2 |
130,775,349 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R4735:Atrn
|
UTSW |
2 |
130,862,910 (GRCm39) |
missense |
probably benign |
0.06 |
|
R4960:Atrn
|
UTSW |
2 |
130,836,967 (GRCm39) |
nonsense |
probably null |
|
|
R4999:Atrn
|
UTSW |
2 |
130,817,874 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R5066:Atrn
|
UTSW |
2 |
130,836,113 (GRCm39) |
missense |
possibly damaging |
0.60 |
|
R5080:Atrn
|
UTSW |
2 |
130,812,044 (GRCm39) |
missense |
possibly damaging |
0.95 |
|
R5141:Atrn
|
UTSW |
2 |
130,841,050 (GRCm39) |
intron |
probably benign |
|
|
R5256:Atrn
|
UTSW |
2 |
130,787,939 (GRCm39) |
missense |
probably benign |
0.39 |
|
R5494:Atrn
|
UTSW |
2 |
130,864,995 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R5678:Atrn
|
UTSW |
2 |
130,811,936 (GRCm39) |
missense |
probably damaging |
0.96 |
|
R5752:Atrn
|
UTSW |
2 |
130,748,464 (GRCm39) |
unclassified |
probably benign |
|
|
R5931:Atrn
|
UTSW |
2 |
130,775,356 (GRCm39) |
missense |
possibly damaging |
0.56 |
|
R6023:Atrn
|
UTSW |
2 |
130,862,900 (GRCm39) |
missense |
probably benign |
0.25 |
|
R6176:Atrn
|
UTSW |
2 |
130,788,011 (GRCm39) |
missense |
probably benign |
0.31 |
|
R6377:Atrn
|
UTSW |
2 |
130,821,889 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R6433:Atrn
|
UTSW |
2 |
130,864,947 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R7226:Atrn
|
UTSW |
2 |
130,828,664 (GRCm39) |
missense |
probably damaging |
0.99 |
|
R7402:Atrn
|
UTSW |
2 |
130,789,520 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R7541:Atrn
|
UTSW |
2 |
130,803,491 (GRCm39) |
missense |
possibly damaging |
0.46 |
|
R7587:Atrn
|
UTSW |
2 |
130,822,034 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R7872:Atrn
|
UTSW |
2 |
130,812,147 (GRCm39) |
critical splice donor site |
probably null |
|
|
R7910:Atrn
|
UTSW |
2 |
130,806,807 (GRCm39) |
missense |
probably benign |
0.04 |
|
R7913:Atrn
|
UTSW |
2 |
130,812,131 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R7933:Atrn
|
UTSW |
2 |
130,836,986 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R8044:Atrn
|
UTSW |
2 |
130,777,449 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R8079:Atrn
|
UTSW |
2 |
130,855,561 (GRCm39) |
missense |
probably null |
1.00 |
|
R8093:Atrn
|
UTSW |
2 |
130,817,908 (GRCm39) |
missense |
probably benign |
0.00 |
|
R8203:Atrn
|
UTSW |
2 |
130,802,469 (GRCm39) |
missense |
probably benign |
0.00 |
|
R8234:Atrn
|
UTSW |
2 |
130,864,920 (GRCm39) |
critical splice acceptor site |
probably null |
|
|
R8462:Atrn
|
UTSW |
2 |
130,777,504 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R8816:Atrn
|
UTSW |
2 |
130,846,494 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R8816:Atrn
|
UTSW |
2 |
130,748,798 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R8831:Atrn
|
UTSW |
2 |
130,748,521 (GRCm39) |
missense |
probably benign |
0.22 |
|
R8937:Atrn
|
UTSW |
2 |
130,841,157 (GRCm39) |
missense |
probably benign |
0.00 |
|
R9161:Atrn
|
UTSW |
2 |
130,777,470 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R9722:Atrn
|
UTSW |
2 |
130,803,536 (GRCm39) |
missense |
probably damaging |
1.00 |
|
R9786:Atrn
|
UTSW |
2 |
130,786,809 (GRCm39) |
missense |
probably damaging |
1.00 |
|
RF009:Atrn
|
UTSW |
2 |
130,748,842 (GRCm39) |
missense |
probably benign |
0.12 |
|
X0024:Atrn
|
UTSW |
2 |
130,800,059 (GRCm39) |
missense |
probably damaging |
1.00 |
|
Z1088:Atrn
|
UTSW |
2 |
130,815,319 (GRCm39) |
missense |
probably benign |
|
|
Z1176:Atrn
|
UTSW |
2 |
130,788,113 (GRCm39) |
missense |
probably benign |
0.27 |
|
Z1177:Atrn
|
UTSW |
2 |
130,787,962 (GRCm39) |
missense |
probably damaging |
0.99 |
|
| Predicted Primers |
PCR Primer
(F):5'- GGGGAAATCAAGTATTGCACATTTG -3'
(R):5'- CAACAGCATGTGTAAAACCAGG -3'
Sequencing Primer
(F):5'- AGTGAGTGGAACCATGCT -3'
(R):5'- GCATGTGTAAAACCAGGTTTCTAGG -3'
|
| Posted On |
2014-12-04 |
Incidental Mutation