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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Mllt3+
wild type
MGI:2440580
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Mllt3tm1b(EUCOMM)Hmgu/Mllt3+ C57BL/6N-Mllt3tm1b(EUCOMM)Hmgu/Cnrm MGI:5757365
cn2
Kmt2atm1Thr/Kmt2a+
Mllt3tm2Thr/Mllt3+
Tg(Lck-cre)1Thr/?
involves: 129S/SvEv MGI:3720075


Genotype
MGI:5757365
ht1
Allelic
Composition
Mllt3tm1b(EUCOMM)Hmgu/Mllt3+
Genetic
Background
C57BL/6N-Mllt3tm1b(EUCOMM)Hmgu/Cnrm
Cell Lines HEPD0538_4_B06
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mllt3tm1b(EUCOMM)Hmgu mutation (0 available); any Mllt3 mutation (29 available)
Data Sources
phenotype observed in females
phenotype observed in males
N normal phenotype
adipose tissue

behavior/neurological
IMPC - HAR

hematopoietic system
IMPC - HAR

homeostasis/metabolism

renal/urinary system

skeleton

vision/eye
IMPC - HAR




Genotype
MGI:3720075
cn2
Allelic
Composition
Kmt2atm1Thr/Kmt2a+
Mllt3tm2Thr/Mllt3+
Tg(Lck-cre)1Thr/?
Genetic
Background
involves: 129S/SvEv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Kmt2atm1Thr mutation (0 available); any Kmt2a mutation (137 available)
Mllt3tm2Thr mutation (0 available); any Mllt3 mutation (29 available)
Tg(Lck-cre)1Thr mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• 18 of 20 mice develop hematopoeitic neoplasm that are either T cell or myeloid in origin
• infiltration of malignant cells occurs in the liver, kidney, lungs and lymph nodes
• mice develop small T cell lymphomas
• mice have myelo-proliferative-like myeloid leukemia without circulating leukemic cells

hematopoietic system
• mice develop small T cell lymphomas
• splenomeglia is caused by a repopulation of the spleen with malignant cells
• red and white pulp architecture is lost
• red and white pulp architecture is lost

immune system
• mice develop small T cell lymphomas
• splenomeglia is caused by a repopulation of the spleen with malignant cells
• red and white pulp architecture is lost
• red and white pulp architecture is lost

growth/size/body
• splenomeglia is caused by a repopulation of the spleen with malignant cells

endocrine/exocrine glands
• mice develop small T cell lymphomas





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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
01/20/2026
MGI 6.24
The Jackson Laboratory