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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		NptnY219X
Tyr219stop
MGI:5911041
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
 		NptnY219X/NptnY219X involves: BALB/c * C3H/HeH * C57BL/6J MGI:5911044
ht2
 		Nptnpitch/NptnY219X involves: BALB/c * C3H * C3H/HeH * C57BL/6J MGI:5911046


Genotype
MGI:5911044
hm1
Allelic
Composition		 NptnY219X/NptnY219X
Genetic
Background		 involves: BALB/c * C3H/HeH * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
NptnY219X mutation (1 available); any Nptn mutation (40 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
hearing/vestibular/ear
increased or absent threshold for auditory brainstem response ( J:228717 )
• greatly elevated thresholds (greater than or equal to 90 dB SPL) at all frequencies tested (8, 12, 20, and 26 kHz) at 8 weeks of age




Genotype
MGI:5911046
ht2
Allelic
Composition		 Nptnpitch/NptnY219X
Genetic
Background		 involves: BALB/c * C3H * C3H/HeH * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Nptnpitch mutation (0 available); any Nptn mutation (40 available)
NptnY219X mutation (1 available); any Nptn mutation (40 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
hearing/vestibular/ear
increased or absent threshold for auditory brainstem response ( J:228717 )
• greatly elevated thresholds (greater than or equal to 90 dB SPL) at all frequencies tested (8, 12, 20, and 26 kHz) at 8 weeks of age




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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
09/30/2025
MGI 6.24 		The Jackson Laboratory