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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Casr+
wild type
MGI:2176760
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Casrtm1b(KOMP)Mbp/Casr+ C57BL/6N-Casrtm1b(KOMP)Mbp/Tcp MGI:6288372
ht2
CasrNuf/Casr+ either: (involves: 102/El * 102/H * C3H/He) or (involves: 102/El * C3H/He * C3H/HeH) MGI:3603348
ht3
Casrtm1Ces/Casr+ involves: 129X1/SvJ * Black Swiss MGI:2176761
cn4
Casrtm1Wch/Casr+
Tg(PTH-cre)4167Slib/0
involves: 129S4/SvJae * C57BL/6 * FVB MGI:5306890


Genotype
MGI:6288372
ht1
Allelic
Composition
Casrtm1b(KOMP)Mbp/Casr+
Genetic
Background
C57BL/6N-Casrtm1b(KOMP)Mbp/Tcp
Cell Lines DEPD00519_3_D05
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Casrtm1b(KOMP)Mbp mutation (2 available); any Casr mutation (61 available)
Data Sources
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands

homeostasis/metabolism
IMPC - TCP

nervous system

reproductive system
IMPC - UCD




Genotype
MGI:3603348
ht2
Allelic
Composition
CasrNuf/Casr+
Genetic
Background
either: (involves: 102/El * 102/H * C3H/He) or (involves: 102/El * C3H/He * C3H/HeH)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
CasrNuf mutation (2 available); any Casr mutation (61 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Ectopic calcification and cataract formation in CasrNuf/Casr+ and CasrNuf/CasrNuf mice

vision/eye
• cataracts consisting of a group of small, opaque dots in the lens nucleus, these dots are smaller and less numerous than in homozygotes

homeostasis/metabolism
• reduced parathyroid hormone levels are seen; however, no abnormalities are seen in the parathyroid glands and serum and urinary magnesium levels are normal

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
autosomal dominant hypocalcemia 1 DOID:0090107 OMIM:601198
J:92612




Genotype
MGI:2176761
ht3
Allelic
Composition
Casrtm1Ces/Casr+
Genetic
Background
involves: 129X1/SvJ * Black Swiss
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Casrtm1Ces mutation (0 available); any Casr mutation (61 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
endocrine/exocrine glands
N
• parathyroid glands from heterozygous mutants are of normal size and structure and display normal cell morphology

growth/size/body
N
• heterozygotes display no differences in physique, body weight or physical activity relative to wild-type

hematopoietic system
N
• heterozygotes display no differences in the mean hematocrit relative to wild-type

homeostasis/metabolism
• despite increased calcium serum levels, heterozygotes show a significant increase in serum parathyroid hormone (PTH) levels
• when fed with Ca2+ contents of 2.5%, 0.6% or 0.02% for 3 weeks, heterozygotes do alter PTH release on response to increases in dietary Ca2+, although the serum calcium concentration associated with a given level of PTH is higher in heterozygotes relative to wild-type
• heterozygotes show a benign elevation in serum Ca2+, both in serum total calcium and serum ionized calcium levels
• heterozygotes display an elevation in serum Mg2+ levels
• heterozygotes display hypocalciuria relative to wild-type

renal/urinary system
N
• heterozygous kidneys appear histologically and anatomically normal relative to wild-type
• heterozygotes display hypocalciuria relative to wild-type

skeleton
N
• heterozygotes do not display any skeletal abnormalities

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
familial hypocalciuric hypercalcemia 1 DOID:0060700 OMIM:145980
J:29900




Genotype
MGI:5306890
cn4
Allelic
Composition
Casrtm1Wch/Casr+
Tg(PTH-cre)4167Slib/0
Genetic
Background
involves: 129S4/SvJae * C57BL/6 * FVB
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Casrtm1Wch mutation (0 available); any Casr mutation (61 available)
Tg(PTH-cre)4167Slib mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype




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
03/25/2025
MGI 6.24
The Jackson Laboratory