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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Igf1rtm1.2Mhz
targeted mutation 1.2, Martin Holzenberger
MGI:2386329
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Igf1rtm1.2Mhz/Igf1rtm1.2Mhz involves: 129/Sv * C57BL/6 * FVB/N MGI:3775301
cx2
Igf1rtm1.2Mhz/Igf1r+
Zfand2btm1Otin/Zfand2btm1Otin
involves: 129/Sv * 129S7/SvEvBrd * C57BL/6 MGI:6784094


Genotype
MGI:3775301
hm1
Allelic
Composition
Igf1rtm1.2Mhz/Igf1rtm1.2Mhz
Genetic
Background
involves: 129/Sv * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igf1rtm1.2Mhz mutation (1 available); any Igf1r mutation (86 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• at birth mice cannot breath and die within the first few minutes of life

respiratory system
• at birth mice cannot breath

growth/size/body
• mice are 50.3% of wild-type weight

muscle
• mice exhibit general hypotrophia with particularly underdeveloped intercostals muscles




Genotype
MGI:6784094
cx2
Allelic
Composition
Igf1rtm1.2Mhz/Igf1r+
Zfand2btm1Otin/Zfand2btm1Otin
Genetic
Background
involves: 129/Sv * 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Igf1rtm1.2Mhz mutation (1 available); any Igf1r mutation (86 available)
Zfand2btm1Otin mutation (0 available); any Zfand2b mutation (11 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
N
• mice exhibit normal spleen weight with no significant alterations in hematocrit and WBC, lymphocyte, granulocyte or platelet number in peripheral blood relative to wild-type or single Igf1rtm1.2Mhz heterozygous controls at 6 and 12 months of age
• normal % and absolute number of LSK+ cells in bone marrow and spleen with no evidence of reticulin fibers (myelofibrosis) in bone marrow at 12 months of age, unlike in Zfand2btm1Otin homozygotes
• normal total number of bone marrow cells, with no significant differences in the number of mature myeloid cells or nucleated red cells relative to wild-type or single Igf1rtm1.2Mhz heterozygous controls

neoplasm
N
• mice do NOT develop myeloproliferative neoplasms, unlike Zfand2btm1Otin homozygotes





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Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
04/16/2024
MGI 6.23
The Jackson Laboratory