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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky
targeted mutation 7, Klaus Rajewsky
MGI:4430527
Summary 8 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/Gt(ROSA)26Sor+
Tg(CAG-cre/Esr1*)5Amc/0
B6.Cg-Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky Tg(CAG-cre/Esr1*)5Amc MGI:6197269
cn2
Egr2tm2(cre)Pch/Egr2+
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/?
Ptpn11tm1.1Wbm/Ptpn11tm1.1Wbm
involves: 129P2/OlaHsd * 129S2/SvPas * C57BL/6 MGI:5588148
cn3
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/Gt(ROSA)26Sortm13(CAG-MYC,-CD2*)Rsky
Ighg1tm1(cre)Cgn/Ighg1+
involves: 129P2/OlaHsd * C57BL/6 MGI:5463978
cn4
Erbb3tm3Cbm/Erbb3tm3Cbm
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/?
Tg(Dhh-cre)1Mejr/0
involves: 129P2/OlaHsd * C57BL/6 * FVB/N MGI:5588164
cn5
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/?
Ptpn11tm1.1Wbm/Ptpn11tm1.1Wbm
Tg(Dhh-cre)1Mejr/0
involves: 129P2/OlaHsd * C57BL/6 * FVB/N MGI:5588151
cn6
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/Gt(ROSA)26Sor+
Gt(ROSA)26Sortm4(ACTB-tdTomato,-EGFP)Luo/Gt(ROSA)26Sor+
Tg(ACTA1-cre/Esr1*)2Kesr/0
involves: 129S1/Sv * 129X1/SvJ * C3H * C57BL/6J MGI:8268434
cn7
Egr2tm2(cre)Pch/Egr2+
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/?
involves: 129S2/SvPas * C57BL/6 MGI:5588141
cn8
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky
Tg(Cr2-cre)3Cgn/0
involves: C57BL/6 MGI:4430556


Genotype
MGI:6197269
cn1
Allelic
Composition
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/Gt(ROSA)26Sor+
Tg(CAG-cre/Esr1*)5Amc/0
Genetic
Background
B6.Cg-Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky Tg(CAG-cre/Esr1*)5Amc
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (1058 available)
Tg(CAG-cre/Esr1*)5Amc mutation (11 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice administered a single low dose (4 mg/kg) of tamoxifen to induce cre recombination survive 2 months and then die with multiple abnormalities
• tamoxifen-administered mice treated with rapamycin show improved survival but no improvement in organ abnormalities such as liver and spleen disorganization with aberrant vascularization
• mice start to rapidly die after 40 mg/kg tamoxifen administration, with 50% of mortality at day 9
• tamoxifen-administered mice treated with BYL719 are alive after 40 days, however interruption of BYL719 treatment 40 days after tamoxifen-administration leads to rapid death
• tamoxifen-administered mice treated with rapamycin show improved survival but no improvement in organ abnormalities such as liver and spleen disorganization with aberrant vascularization

growth/size/body
• kidney cysts in tamoxifen-administered mice
• organomegaly is seen in mice administered a single low dose of tamoxifen

cardiovascular system
• vessel abnormalities in tamoxifen-administered mice
• tamoxifen-administered mice treated with BYL719 show normal vessels
• ecstatic venous channels with a thin endothelial cell lining, surrounded by sparse, erratically distributed vascular smooth muscle cells and a disorganized extracellular matrix are seen in mice administered a low dose of tamoxifen
• severe vessel dilation in tamoxifen-administered mice
• intra-abdominal hemorrhages in tamoxifen-administered mice
• hepatic hemorrhages in tamoxifen-administered mice

cellular
• high number of proliferating cells in affected organs of tamoxifen-administered mice
• however, no changes in apoptosis are seen
• tamoxifen-administered mice treated with BYL719 show a reduction in proliferation

hematopoietic system
• loss of spleen microarchitecture integrity in tamoxifen-administered mice

immune system
• loss of spleen microarchitecture integrity in tamoxifen-administered mice
• expansion of lymphatic vessels in tamoxifen-administered mice

limbs/digits/tail
• mice administered a single low dose of tamoxifen progressively develop asymmetrical overgrowth of extremities, disseminated voluminous tumors and subcutaneous vascular abnormalities
• low-dose tamoxifen administered mice treated with BYL719 show improvement of the overgrowth of extremities, however, withdrawal of BYL719 leads to the development of asymmetric extremity hypertrophy within 4 weeks

liver/biliary system
• hepatic hemorrhages in tamoxifen-administered mice
• severe liver steatosis with vessel disorganization in tamoxifen-administered mice

muscle
• muscle hypertrophy in tamoxifen-administered mice
• mice treated with BYL719 7 days after cre induction show improved muscle hypertrophy

neoplasm
• low dose tamoxifen-administered mice develop tumors that are lipomatous tumors and severe vascular lesions mixing venous and arterial vessels
• low-dose tamoxifen administered mice treated with BYL719 show reduced and disappearance of visible tumors within 2 weeks
• withdrawal of BYL719 from the low-dose tamoxifen administered mice leads to recurrence of tumors
• low-dose tamoxifen-administered mice treated with rapamycin show no effect on tumor growth

renal/urinary system
• kidney cysts in tamoxifen-administered mice
• fibrosis of the kidney with aberrant vessels in tamoxifen-administered mice

skeleton
• scoliosis in tamoxifen-administered mice
• mice treated with BYL719 7 days after cre induction show improved scoliosis

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
CLOVES syndrome DOID:0080351 OMIM:612918
J:264410




Genotype
MGI:5588148
cn2
Allelic
Composition
Egr2tm2(cre)Pch/Egr2+
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/?
Ptpn11tm1.1Wbm/Ptpn11tm1.1Wbm
Genetic
Background
involves: 129P2/OlaHsd * 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Egr2tm2(cre)Pch mutation (2 available); any Egr2 mutation (32 available)
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (1058 available)
Ptpn11tm1.1Wbm mutation (1 available); any Ptpn11 mutation (43 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• myelination defects are more pronounced than in single conditional Ptpn11tm1.1Wbm homozygotes




Genotype
MGI:5463978
cn3
Allelic
Composition
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/Gt(ROSA)26Sortm13(CAG-MYC,-CD2*)Rsky
Ighg1tm1(cre)Cgn/Ighg1+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm13(CAG-MYC,-CD2*)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (1058 available)
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (1058 available)
Ighg1tm1(cre)Cgn mutation (4 available); any Ighg1 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• when bone marrow is used to reconstitute Rag2 and Il2rg null mice stimulated with sheep red blood cells, median survival is 227 days

immune system
• in the Peyer's patches and spleen

neoplasm
• of germinal center B cell origin when bone marrow is used to reconstitute Rag2 and Il2rg null mice stimulated with sheep red blood cells

hematopoietic system
• in the Peyer's patches and spleen




Genotype
MGI:5588164
cn4
Allelic
Composition
Erbb3tm3Cbm/Erbb3tm3Cbm
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/?
Tg(Dhh-cre)1Mejr/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Erbb3tm3Cbm mutation (0 available); any Erbb3 mutation (44 available)
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (1058 available)
Tg(Dhh-cre)1Mejr mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• myelination is not seen




Genotype
MGI:5588151
cn5
Allelic
Composition
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/?
Ptpn11tm1.1Wbm/Ptpn11tm1.1Wbm
Tg(Dhh-cre)1Mejr/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (1058 available)
Ptpn11tm1.1Wbm mutation (1 available); any Ptpn11 mutation (43 available)
Tg(Dhh-cre)1Mejr mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• mice show myelination defects similar to single conditional Ptpn11tm1.1Wbm homozygotes




Genotype
MGI:8268434
cn6
Allelic
Composition
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/Gt(ROSA)26Sor+
Gt(ROSA)26Sortm4(ACTB-tdTomato,-EGFP)Luo/Gt(ROSA)26Sor+
Tg(ACTA1-cre/Esr1*)2Kesr/0
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C3H * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(ACTB-tdTomato,-EGFP)Luo mutation (10 available); any Gt(ROSA)26Sor mutation (1058 available)
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (1058 available)
Tg(ACTA1-cre/Esr1*)2Kesr mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• mice administered alpelisib, a PIK3CA inhibitor, daily starting 48 hours after cre induction (preventative alpelisib) exhibit a normal appearance during the 22 weeks of treatment and a body weight increase similar to that of controls
• mice administered alpelisib 2 weeks after cre induction when global muscle hypertrophy is already prominent for 20 additional weeks (therapeutic alpelisib), show a rapid body weight decrease
• 6-week-old mice treated with tamoxifen for 5 days show progressive weight gain starting at 3 weeks after treatment which is not seen in wild-type mice and around 11 weeks after induction in males and 24 weeks in females, body weight becomes lower than in wild-type mice

muscle
• mitochondrial mass is reduced in striated muscle cells of tamoxifen-treated mice
• mice show skeletal muscle hypertrophy at 15 weeks after tamoxifen, with hypertrophic striated cells
• mice administered alpelisib, a PIK3CA inhibitor, daily starting 48 hours after cre induction (preventative alpelisib) exhibit no skeletal muscle overgrowth 8 weeks after alpelisib initiation indicating that alpelisib prevents skeletal muscle overgrowth
• mice treated with therapeutic alpelisib show a reduction in muscular volume and striated muscle is conserved indicating that alpelisib reverses skeletal muscle overgrowth
• striated muscle cells from tamoxifen-treated mice show an alteration in the mitochondrial transmembrane potential
• tamoxifen-treated mice show higher fluoro-D-glucose muscular uptake

adipose tissue
• tamoxifen-treated mice show reduced fat content

behavior/neurological
• tamoxifen-treated mice show a gain in muscle strength

cellular
• tamoxifen-treated mice show higher fluoro-D-glucose muscular uptake
• striated muscle cells from tamoxifen-treated mice show an alteration in the mitochondrial transmembrane potential

homeostasis/metabolism
• plasma metabolites metabolomics analysis of tamoxifen-treated mice show metabolic changes with increases in acetyl-aspartate, acetyl-glutamine, acetyl-lysine, aminoadipate, ATP, camosine, citrate, creatinine, cytidine, decanoic acid, dodecanoyl-carnitine, dodecanoic acid/lauric acid, docosahexaenoic acid, hexanoic acid, hexanoyl-carnitine, linoleic acid, linolenic acid, methyl-lysine, myristic acid, myristoyl-carnitine, octanoyl-carnitine, oleic acid, O-phosphoethanolamine, palmitic acid, palmitoyl-carnitine, palmitoleic acid, phosphocreatine, riboflavin, S-adenosyl-L-homocysteine, and taurine, and decreases in glutamate, glucose, L-alanine, lysine, methionine, ornithine, threonine, tryptophan, and tyrosine
• alpelisib treatment results in partial correction of the different metabolic anomalies
• tamoxifen-treated mice are hypoglycemic
• mice treated with preventative alpelisib show normal 12-h fasted glycemia
• mice treated with therapeutic alpelisib show increased blood glucose levels
• mice treated with therapeutic alpelisib show increased insulin levels
• however, mice show conserved insulin secretion in the oral glucose tolerance test
• mice treated with preventative alpelisib show corrected circulating insulin levels
• tamoxifen-treated mice exhibit low insulin levels
• tamoxifen-treated mice show low IGF1 levels
• mice treated with preventative alpelisib show corrected IGF1 levels
• mice treated with therapeutic alpelisib show increased circulating IGF1 levels




Genotype
MGI:5588141
cn7
Allelic
Composition
Egr2tm2(cre)Pch/Egr2+
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/?
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Egr2tm2(cre)Pch mutation (2 available); any Egr2 mutation (32 available)
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (1058 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• myelination is impaired




Genotype
MGI:4430556
cn8
Allelic
Composition
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky/Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky
Tg(Cr2-cre)3Cgn/0
Genetic
Background
involves: C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm7(Pik3ca*,-EGFP)Rsky mutation (1 available); any Gt(ROSA)26Sor mutation (1058 available)
Tg(Cr2-cre)3Cgn mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice die soon after birth





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last database update
12/30/2025
MGI 6.24
The Jackson Laboratory