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Phenotypes Associated with This Genotype
Genotype
MGI:5553174
Allelic
Composition
HelqGt(RRF112)Byg/HelqGt(RRF112)Byg
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
HelqGt(RRF112)Byg mutation (0 available); any Helq mutation (49 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• reduced c-Kit+ spermatogonia
• cystic hyperplasia
• varying degree
• females contribute more to reduced fertility than male mice
• mating homozygotes produces fewer and smaller litters than heterozygotes

neoplasm
• salivary, thyroid, parathyroid, adrenal, mammary and endometrial gland adenomas

endocrine/exocrine glands
• cystic hyperplasia
• varying degree
• salivary, thyroid, parathyroid, adrenal, mammary and endometrial gland adenomas

nervous system

integument

growth/size/body
• cystic hyperplasia

cellular
• reduced c-Kit+ spermatogonia


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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Funding Information
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last database update
01/28/2026
MGI 6.24
The Jackson Laboratory