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Phenotypes Associated with This Genotype
Genotype
MGI:3800286
Allelic
Composition
Tg(MMTVneu)202Mul/0
Tg(MMTVTGFA)29Rjc/0
Genetic
Background
involves: C57BL/6 * DBA/2 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tg(MMTVneu)202Mul mutation (5 available)
Tg(MMTVTGFA)29Rjc mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
• female mice exhibit abnormal ductal trees
• alveoli exhibit denser cell lining in the walls compared to Tg(MMTVTGFA)29Rjc expressing mice that exhibit cystically dilated alveoli
• 50% of mice exhibit mammary gland tumors at day 175 and 95% at day 250 compared to 6% of Tg(MMTVTGFA)29Rjc expressing mice and 35% of Tg(MMTVneu)202Mul expressing mice at day 250
• mice exhibit tumors that are nodular or tubular but not mixed
• nulliparous female mice exhibit epithelial hyperplasia and dysplasia along with stromal inflammation

neoplasm
• 50% of mice exhibit mammary gland tumors at day 175 and 95% at day 250 compared to 6% of Tg(MMTVTGFA)29Rjc expressing mice and 35% of Tg(MMTVneu)202Mul expressing mice at day 250
• mice exhibit tumors that are nodular or tubular but not mixed

behavior/neurological
• females cannot nurse her young

integument
• female mice exhibit abnormal ductal trees
• alveoli exhibit denser cell lining in the walls compared to Tg(MMTVTGFA)29Rjc expressing mice that exhibit cystically dilated alveoli
• 50% of mice exhibit mammary gland tumors at day 175 and 95% at day 250 compared to 6% of Tg(MMTVTGFA)29Rjc expressing mice and 35% of Tg(MMTVneu)202Mul expressing mice at day 250
• mice exhibit tumors that are nodular or tubular but not mixed
• nulliparous female mice exhibit epithelial hyperplasia and dysplasia along with stromal inflammation


Contributing Projects:
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
01/20/2026
MGI 6.24
The Jackson Laboratory