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Phenotypes Associated with This Genotype
Genotype
MGI:3611937
Allelic
Composition		 Hoxa3tm1Mrc/Hoxa3+
Hoxd3tm1Mrc/Hoxd3tm1Mrc
Genetic
Background		 involves: 129S7/SvEvBrd * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hoxa3tm1Mrc mutation (0 available); any Hoxa3 mutation (26 available)
Hoxd3tm1Mrc mutation (0 available); any Hoxd3 mutation (13 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
immune system
ectopic thymus ( J:46523 )
• lobes of thymus displaced anteriorly

endocrine/exocrine glands
ectopic parathyroid gland ( J:46523 )
• ectopic parathyroids near the anterior ends of the thymus
ectopic thymus ( J:46523 )
• lobes of thymus displaced anteriorly

hematopoietic system
ectopic thymus ( J:46523 )
• lobes of thymus displaced anteriorly

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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Send questions and comments to User Support. 		last database update
01/06/2026
MGI 6.24 		The Jackson Laboratory