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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Spint2Gt(KST272)Byg
gene trap KST272, BayGenomics
MGI:2156187
Summary 11 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg involves: 129P2/OlaHsd MGI:5440262
hm2
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg involves: 129P2/OlaHsd * C57BL/6 MGI:3029268
cx3
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
St14tm1Bug/St14tm1Bug
involves: 129P2/OlaHsd MGI:5440263
cx4
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
St14tm1Bug/St14+
involves: 129P2/OlaHsd MGI:5440264
cx5
F2rl1tm1Cgh/F2rl1tm1Cgh
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
St14tm1Bug/St14+
involves: 129P2/OlaHsd * 129S4/SvJae MGI:5440267
cx6
F2rl1tm1Cgh/F2rl1tm1Cgh
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
involves: 129P2/OlaHsd * 129S4/SvJae MGI:5440266
cx7
Prss8em1Bug/Prss8em1Bug
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
involves: 129P2/OlaHsd * 129S6/SvEvTac * C57BL/6J * FVB/NJ * NIH Black Swiss MGI:6478321
cx8
Prss8fr/Prss8fr
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
involves: 129P2/OlaHsd * DBA MGI:5440273
cx9
Prss8fr/Prss8+
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
involves: 129P2/OlaHsd * DBA MGI:5440274
cx10
Prss8fr/Prss8fr
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
St14tm1Bug/St14+
involves: 129P2/OlaHsd * DBA MGI:5440275
cx11
Scnn1atm1.2Hum/Scnn1atm1.2Hum
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
involves: 129/Sv * 129P2/OlaHsd MGI:5440265


Genotype
MGI:5440262
hm1
Allelic
Composition
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• only 5% survive past E9.0 and none survive past E10.5 (maternal genotype is heterozygous for St14tm1Bug and Spint2Gt(KST272)Byg)

embryo
• neural tube defects involving the hindbrain, midbrain and forebrain are seen
• defects are generally observable at E9.5 or earlier
• the dorsolateral hinge points critical for the final stages of the neural tube closure are absent in 97 percent of embryos

nervous system
• neural tube defects involving the hindbrain, midbrain and forebrain are seen
• defects are generally observable at E9.5 or earlier
• the dorsolateral hinge points critical for the final stages of the neural tube closure are absent in 97 percent of embryos
• 10% of embryos fail to initiate fusion at closure point 2, resulting in exencephaly that extends from forebrain region to the hindbrain cervical boundary
• many embryos that initiate fusion at closure point 2 display exencephaly that spans the entire midbrain and hindbrain regions




Genotype
MGI:3029268
hm2
Allelic
Composition
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging

embryo
• the primitive streak and the embryonic mesoderm develop, but embryos do not progress to the headfold stage
• severe clefting of the ectoderm was noted




Genotype
MGI:5440263
cx3
Allelic
Composition
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
St14tm1Bug/St14tm1Bug
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
St14tm1Bug mutation (0 available); any St14 mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
N
• embryos are viable unlike embryos homozygous for Spint2Gt(KST272)Byg alone

embryo
N
• inactivation of St14 rescues defects in placental development seen in mice homozygous for Spint2Gt(KST272)Byg alone
• in 18% of mice
• partial rescue compared to mice homozygous for Spint2Gt(KST272)Byg and heterozygous for St14tm1Bug

limbs/digits/tail
• in 62% of mice

nervous system
• in 18% of mice
• partial rescue compared to mice homozygous for Spint2Gt(KST272)Byg and heterozygous for St14tm1Bug
• in 13% of mice




Genotype
MGI:5440264
cx4
Allelic
Composition
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
St14tm1Bug/St14+
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
St14tm1Bug mutation (0 available); any St14 mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• survive longer than embryos homozygous for Spint2Gt(KST272)Byg alone
• lethality at E10.5-E14.5

embryo
• in 95-100% of mice
• placental defects
• incomplete differentiation

limbs/digits/tail
• in 89% of mice

nervous system
• in 95-100% of mice
• in 11% of mice




Genotype
MGI:5440267
cx5
Allelic
Composition
F2rl1tm1Cgh/F2rl1tm1Cgh
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
St14tm1Bug/St14+
Genetic
Background
involves: 129P2/OlaHsd * 129S4/SvJae
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
F2rl1tm1Cgh mutation (3 available); any F2rl1 mutation (58 available)
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
St14tm1Bug mutation (0 available); any St14 mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• in all mice
• penetrance is identical to mutant mice wild-type for at least one F2rl1 allele




Genotype
MGI:5440266
cx6
Allelic
Composition
F2rl1tm1Cgh/F2rl1tm1Cgh
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
Genetic
Background
involves: 129P2/OlaHsd * 129S4/SvJae
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
F2rl1tm1Cgh mutation (3 available); any F2rl1 mutation (58 available)
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging




Genotype
MGI:6478321
cx7
Allelic
Composition
Prss8em1Bug/Prss8em1Bug
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
Genetic
Background
involves: 129P2/OlaHsd * 129S6/SvEvTac * C57BL/6J * FVB/NJ * NIH Black Swiss
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Prss8em1Bug mutation (0 available); any Prss8 mutation (24 available)
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice die 4 to 7 days after birth

growth/size/body
• 20% reduction in body weight at birth
• postnatal growth is severely impeded, despite mice having a milk spot indicating the ability to ingest food and mice fail to gain any weight after birth

digestive/alimentary system
• intestines of most mice are filled with dark material that contains high number of red blood cells on P4, indicating bleeding into the lumen
• reduction in the proliferation rates of intestinal epithelial cells after birth, but not at E18.5, with about 70 and 80% decrease in Ki67+ epithelial cells in both small and large intestines at P2 and P4, respectively
• however, no apoptotic cells are detected in intestinal tissues from P2 to P4
• severe defect in the development of the lower gastrointestinal tract
• intestines appear distended as early as P2, but not at E18.5
• essential loss of normal tissue architecture of both small and large intestines by P4
• reduction of and near complete absence of mucin-producing goblet cells in small and large intestines at P2 and P4, respectively
• mice show general disorganization of intestinal epithelium within crypts of the large intestine at E18.5
• P2 large intestine exhibits disorganization of surface epithelium
• small intestine shows increased dyslocalization of nuclei within the epithelial layer indicating loss of epithelial cell polarity on P2
• P2 small intestine shows a substantial number of epithelial cells containing very large vacuoles
• abnormal differentiation of intestinal epithelium
• an increase in shedding of cellular material into the lumen of the large intestine is seen at E18.5
• P2 large intestine exhibits disorganization of surface epithelium and overall loss of crypt structure
• mice show general disorganization of intestinal epithelium within crypts of the large intestine at E18.5
• P2 large intestine exhibits overall loss of crypt structure
• decrease in the number of mucin-producing goblet cells in the large intestine at E18.5
• small intestine shows increased dyslocalization of nuclei within the epithelial layer indicating loss of epithelial cell polarity on P2
• P2 small intestine shows a substantial number of epithelial cells containing very large vacuoles
• small intestine shows signs of villous atrophy on P2 but not at E18.5
• relative length of the large intestine is reduced at P2 but not at E18.5

endocrine/exocrine glands
• mice show general disorganization of intestinal epithelium within crypts of the large intestine at E18.5
• P2 large intestine exhibits overall loss of crypt structure
• decrease in the number of mucin-producing goblet cells in the large intestine at E18.5

cardiovascular system
• intestines of most mice are filled with dark material that contains high number of red blood cells on P4, indicating bleeding into the lumen

cellular
• reduction of and near complete absence of mucin-producing goblet cells in small and large intestines at P2 and P4, respectively
• decrease in the number of mucin-producing goblet cells in the large intestine at E18.5
• reduction in the proliferation rates of intestinal epithelial cells after birth, but not at E18.5, with about 70 and 80% decrease in Ki67+ epithelial cells in both small and large intestines at P2 and P4, respectively
• however, no apoptotic cells are detected in intestinal tissues from P2 to P4

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
congenital secretory sodium diarrhea 3 DOID:0060781 OMIM:270420
J:261068




Genotype
MGI:5440273
cx8
Allelic
Composition
Prss8fr/Prss8fr
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
Genetic
Background
involves: 129P2/OlaHsd * DBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Prss8fr mutation (13 available); any Prss8 mutation (24 available)
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• many mice survive to term unlike mutant mice carrying at least 1 wild-type allele of Prss8

embryo
N
• almost complete rescue of neural tube closure and placental differentiation defects seen in mice homozygous for Spint2Gt(KST272)Byg and heterozygous Prss8fr

nervous system
• in 5% of embryos after E9.5




Genotype
MGI:5440274
cx9
Allelic
Composition
Prss8fr/Prss8+
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
Genetic
Background
involves: 129P2/OlaHsd * DBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Prss8fr mutation (13 available); any Prss8 mutation (24 available)
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• no embryos are detected at E9.5-E11.5




Genotype
MGI:5440275
cx10
Allelic
Composition
Prss8fr/Prss8fr
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
St14tm1Bug/St14+
Genetic
Background
involves: 129P2/OlaHsd * DBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Prss8fr mutation (13 available); any Prss8 mutation (24 available)
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
St14tm1Bug mutation (0 available); any St14 mutation (44 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
N
• expected numbers are found at term unlike mutant mice wild-type for St14

embryo
N
• complete rescue of neural tube closure and placental differentiation defects seen in mice homozygous for Spint2Gt(KST272)Byg and heterozygous Prss8fr




Genotype
MGI:5440265
cx11
Allelic
Composition
Scnn1atm1.2Hum/Scnn1atm1.2Hum
Spint2Gt(KST272)Byg/Spint2Gt(KST272)Byg
Genetic
Background
involves: 129/Sv * 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Scnn1atm1.2Hum mutation (0 available); any Scnn1a mutation (27 available)
Spint2Gt(KST272)Byg mutation (0 available); any Spint2 mutation (15 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• no embryos are detected at E9.5





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last database update
04/23/2024
MGI 6.23
The Jackson Laboratory