Mutations

MAPT P270P

Overview

Pathogenicity: Frontotemporal Dementia : Benign
Clinical Phenotype: None
Reference Assembly: GRCh37/hg19
Position: Chr17:44074018 G>A
dbSNP ID: rs11568305
Coding/Non-Coding: Coding
DNA Change: Substitution
Expected RNA Consequence: Substitution
Expected Protein Consequence: Silent
Codon Change: CCG to CCA
Reference Isoform: Tau Isoform Tau-F (441 aa)
Genomic Region: Exon 9

Findings

This silent polymorphism was detected in healthy family members as well as at least one individual with frontotemporal dementia. It is not thought to be pathogenic (Rizzu et al., 1999).

Neuropathology

Not applicable.

Biological Effect

Unknown.

Last Updated: 16 Feb 2023

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References

Paper Citations

  1. Rizzu P, Van Swieten JC, Joosse M, Hasegawa M, Stevens M, Tibben A, Niermeijer MF, Hillebrand M, Ravid R, Oostra BA, Goedert M, van Duijn CM, Heutink P. High prevalence of mutations in the microtubule-associated protein tau in a population study of frontotemporal dementia in the Netherlands. Am J Hum Genet. 1999 Feb;64(2):414-21. PubMed.

Further Reading

Papers

  1. Houlden H, Baker M, Adamson J, Grover A, Waring S, Dickson D, Lynch T, Boeve B, Petersen RC, Pickering-Brown S, Owen F, Neary D, Craufurd D, Snowden J, Mann D, Hutton M. Frequency of tau mutations in three series of non-Alzheimer's degenerative dementia. Ann Neurol. 1999 Aug;46(2):243-8. PubMed.
  2. Poorkaj P, Grossman M, Steinbart E, Payami H, Sadovnick A, Nochlin D, Tabira T, Trojanowski JQ, Borson S, Galasko D, Reich S, Quinn B, Schellenberg G, Bird TD. Frequency of tau gene mutations in familial and sporadic cases of non-Alzheimer dementia. Arch Neurol. 2001 Mar;58(3):383-7. PubMed.
  3. Levchenko A, Robitaille Y, Strong MJ, Rouleau GA. TAU mutations are not a predominant cause of frontotemporal dementia in Canadian patients. Can J Neurol Sci. 2004 Aug;31(3):363-7. PubMed.
  4. Stanford PM, Brooks WS, Teber ET, Hallupp M, McLean C, Halliday GM, Martins RN, Kwok JB, Schofield PR. Frequency of tau mutations in familial and sporadic frontotemporal dementia and other tauopathies. J Neurol. 2004 Sep;251(9):1098-104. PubMed.
  5. Guerreiro RJ, Washecka N, Hardy J, Singleton A. A thorough assessment of benign genetic variability in GRN and MAPT. Hum Mutat. 2010 Feb;31(2):E1126-40. PubMed.

Learn More

  1. Alzheimer Disease & Frontotemporal Dementia Mutation Database

Protein Diagram

Primary Papers

  1. Rizzu P, Van Swieten JC, Joosse M, Hasegawa M, Stevens M, Tibben A, Niermeijer MF, Hillebrand M, Ravid R, Oostra BA, Goedert M, van Duijn CM, Heutink P. High prevalence of mutations in the microtubule-associated protein tau in a population study of frontotemporal dementia in the Netherlands. Am J Hum Genet. 1999 Feb;64(2):414-21. PubMed.

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