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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Kittm1Alf
targeted mutation 1, Jean-Jacques Panthier
MGI:2449782
Summary 7 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Kittm1Alf/Kittm1Alf involves: 129S2/SvPas MGI:3770780
ht2
Kittm1Alf/Kit+ involves: 129S2/SvPas MGI:3770811
ht3
Kittm1Alf/KitMhdasow3 involves: 129S2/SvPas * C3HeB/FeJ MGI:3771709
cx4
Mitftm5.1Arnh/Mitftm5.1Arnh
Kittm1Alf/Kit+
involves: 129S2/SvPas * 129S4/SvJae * 129S6/SvEvTac * C57BL/6N MGI:5316641
cx5
Mitftm7.1Arnh/Mitftm7.1Arnh
Kittm1Alf/Kit+
involves: 129S2/SvPas * 129S4/SvJae * 129S6/SvEvTac * C57BL/6N MGI:5316642
cx6
Adamts20bt-2H/Adamts20bt-2H
Kittm1Alf/Kit+
involves: 129S2/SvPas * C57BL/6 MGI:3783653
cx7
Adamts20bt-2H/Adamts20bt-2H
Kittm1Alf/Kittm1Alf
involves: 129S2/SvPas * C57BL/6 MGI:3783651


Genotype
MGI:3770780
hm1
Allelic
Composition
Kittm1Alf/Kittm1Alf
Genetic
Background
involves: 129S2/SvPas
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Kittm1Alf mutation (1 available); any Kit mutation (182 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• newborns rapidly die after birth (J:36230)

hematopoietic system
• severe megaloblastic anemia
• severe macrocytic and hyperchromic anemia

pigmentation
• melanocytes are absent form the skin of newborns

reproductive system
• no beta-gal positive cells are found in the ovaries of homozygote newborns, indicating that migration, proliferation, and/or survival of germ cells is impaired
• migration of primordial germ cells (PGC) cells at E9.5 is impaired, with PGCs found in the ventral half of the gut and sometimes grouped in clumps in ectopic sites such as inside of the vitelline artery, instead of being found in the gut wall

embryo
• from E11 onwards, melanoblasts are absent from the surface ectoderm of embryos, indicating that migration/survival of melanoblasts is impaired from E10.5 onwards

integument
• newborns are pale

cellular
• no beta-gal positive cells are found in the ovaries of homozygote newborns, indicating that migration, proliferation, and/or survival of germ cells is impaired
• from E11 onwards, melanoblasts are absent from the surface ectoderm of embryos, indicating that migration/survival of melanoblasts is impaired from E10.5 onwards
• migration of primordial germ cells (PGC) cells at E9.5 is impaired, with PGCs found in the ventral half of the gut and sometimes grouped in clumps in ectopic sites such as inside of the vitelline artery, instead of being found in the gut wall




Genotype
MGI:3770811
ht2
Allelic
Composition
Kittm1Alf/Kit+
Genetic
Background
involves: 129S2/SvPas
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Kittm1Alf mutation (1 available); any Kit mutation (182 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
pigmentation
• melanoblasts fail to colonize the distal parts of the limb buds and the tail tip resulting in white feet and a white tail tip
• white tail tip

reproductive system
• oocyte growth is altered
• males exhibit a higher number of spermatozoa without acrosomal contents
• reduction in epididymal sperm counts
• decrease in sperm motility
• ovaries contain increased numbers of type 5a follicles and fewer numbers of type 5b (preantral follicles) follicles
• primordial follicle numbers decrease with increasing age
• antrum formation in preantral follicles is disrupted at P20, as fewer preantral follicles with 3 or 4 layers of granulosa cells develop an antral cavity
• testes weights are 50% lower than in wild-type
• however, no difference in seminal vesicle weight
• epididymides weights are 25% lower than in wild-type before 30 days of age; at 30 days of age when no spermatozoa are present, weights do not differ
• in vivo and in vitro fertility is greatly reduced in males
• female fertility is normal

limbs/digits/tail
• white tail tip

endocrine/exocrine glands
• ovaries contain increased numbers of type 5a follicles and fewer numbers of type 5b (preantral follicles) follicles
• primordial follicle numbers decrease with increasing age
• antrum formation in preantral follicles is disrupted at P20, as fewer preantral follicles with 3 or 4 layers of granulosa cells develop an antral cavity
• testes weights are 50% lower than in wild-type
• however, no difference in seminal vesicle weight

embryo
• melanoblasts fail to colonize the distal parts of the limb buds and the tail tip

integument
• melanoblasts fail to colonize the distal parts of the limb buds and the tail tip resulting in white feet and a white tail tip
• white tail tip

cellular
• oocyte growth is altered
• males exhibit a higher number of spermatozoa without acrosomal contents
• reduction in epididymal sperm counts
• melanoblasts fail to colonize the distal parts of the limb buds and the tail tip
• decrease in sperm motility




Genotype
MGI:3771709
ht3
Allelic
Composition
Kittm1Alf/KitMhdasow3
Genetic
Background
involves: 129S2/SvPas * C3HeB/FeJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
KitMhdasow3 mutation (1 available); any Kit mutation (182 available)
Kittm1Alf mutation (1 available); any Kit mutation (182 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Germ cell phenotypes of KitMhdasco1/KitMhdasco1, KitMhdasow3/KitMhdasow3, KitMhdasco5/KitMhdasco5, Kittm1Alf/KitMhdasow3 and KitWhc1/KitWhc1 mice

reproductive system
• mutants show no pattern of spermatogenesis

liver/biliary system




Genotype
MGI:5316641
cx4
Allelic
Composition
Mitftm5.1Arnh/Mitftm5.1Arnh
Kittm1Alf/Kit+
Genetic
Background
involves: 129S2/SvPas * 129S4/SvJae * 129S6/SvEvTac * C57BL/6N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Kittm1Alf mutation (1 available); any Kit mutation (182 available)
Mitftm5.1Arnh mutation (0 available); any Mitf mutation (74 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
pigmentation
• slightly larger belly spots
• more melanocytes around the eyes at E15.5 and at birth compared to controls involving Mitftm7.1Arnh
• more melanocytes in pigmented hair follicles found dorsally between the forelimbs compared to controls involving Mitftm7.1Arnh

integument
• more melanocytes in pigmented hair follicles found dorsally between the forelimbs compared to controls involving Mitftm7.1Arnh
• slightly larger belly spots




Genotype
MGI:5316642
cx5
Allelic
Composition
Mitftm7.1Arnh/Mitftm7.1Arnh
Kittm1Alf/Kit+
Genetic
Background
involves: 129S2/SvPas * 129S4/SvJae * 129S6/SvEvTac * C57BL/6N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Kittm1Alf mutation (1 available); any Kit mutation (182 available)
Mitftm7.1Arnh mutation (0 available); any Mitf mutation (74 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
pigmentation
• slightly larger belly spot

integument
• slightly larger belly spot




Genotype
MGI:3783653
cx6
Allelic
Composition
Adamts20bt-2H/Adamts20bt-2H
Kittm1Alf/Kit+
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Adamts20bt-2H mutation (2 available); any Adamts20 mutation (93 available)
Kittm1Alf mutation (1 available); any Kit mutation (182 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
pigmentation
• mice exhibit a wider dorsal and ventral belt than in either Adamts20bt-2H homozygotes or Kittm1Alf heterozygotes
• mice exhibit a synergistic increase in spotting resulting in a white belt compared to Adamts20bt-2H homozygotes or Kittm1Alf heterozygotes
• mice exhibit a wider dorsal and ventral belt than in either Adamts20bt-2H homozygotes or Kittm1Alf heterozygotes
• mice exhibit a synergistic increase in spotting resulting in a white belt compared to Adamts20bt-2H homozygotes or Kittm1Alf heterozygotes

integument
• mice exhibit a wider dorsal and ventral belt than in either Adamts20bt-2H homozygotes or Kittm1Alf heterozygotes
• mice exhibit a synergistic increase in spotting resulting in a white belt compared to Adamts20bt-2H homozygotes or Kittm1Alf heterozygotes
• mice exhibit a wider dorsal and ventral belt than in either Adamts20bt-2H homozygotes or Kittm1Alf heterozygotes
• mice exhibit a synergistic increase in spotting resulting in a white belt compared to Adamts20bt-2H homozygotes or Kittm1Alf heterozygotes




Genotype
MGI:3783651
cx7
Allelic
Composition
Adamts20bt-2H/Adamts20bt-2H
Kittm1Alf/Kittm1Alf
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Adamts20bt-2H mutation (2 available); any Adamts20 mutation (93 available)
Kittm1Alf mutation (1 available); any Kit mutation (182 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
pigmentation
• mice exhibit a synergistic increase in spotting resulting in a white belt compared to homozygotes of either individual allele
• mice exhibit a synergistic increase in spotting resulting in a white belt compared to homozygotes of either individual allele

integument
• mice exhibit a synergistic increase in spotting resulting in a white belt compared to homozygotes of either individual allele
• mice exhibit a synergistic increase in spotting resulting in a white belt compared to homozygotes of either individual allele





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last database update
12/10/2024
MGI 6.24
The Jackson Laboratory