Semantic Dementia

Description

Semantic dementia (SD) is a form of frontotemporal dementia (FTD; see this term), characterized by the progressive, amodal and profound loss of semantic knowledge (combination of visual associative agnosia, anomia, surface dyslexia or dysgraphia and disrupted comprehension of word meaning) and behavioral abnormalities, attributable to the degeneration of the anterior temporal lobes.

Clinical Features

Phenotypes and symptoms related to Semantic Dementia

  • Dementia
  • Neurological speech impairment
  • Brain atrophy
  • Aphasia
  • Dyslexia
  • Dysgraphia
  • Abulia
  • Alexia
  • Visual agnosia
  • Anomia

Incidence and onset information

— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)
No data available about the known clinical features onset.

Alternative names

Semantic Dementia Is also known as semantic primary progressive aphasia, semantic variant ppa.

Researches and researchers

Doctors, researchs, and experts related to Semantic Dementia extracted from public data.

Semantic Dementia Experts map



Current Researchs and researchers

  • BARCELONA — Dr Raquel SÁNCHEZ DEL VALLE DÍAZ

    Coordinator of expert centre - Genetic counsellor - Investigator of research project

    • Institution/s:
      — Servicio de Neurología, Hospital Clínic de Barcelona
      — Neurociencia clínica y experimental, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)
    • Research area/topic::

      PreFrontAls: Searching for therapeutic interventions in frontotemporal dementia with C9ORF72 repeat expansions in the presymptomatic stage - ES


Semantic Dementia Recommended genes panels

Panel Name, Specifity and genes Tested/covered
Dementia.

By Knight Diagnostic Laboratories - Molecular Diagnostic Center Oregon Health & Science University (United States).

SORL1, TARDBP, VCP, FIG4, OPTN, TREM2, CSF1R, CHMP2B, DCTN1, C9orf72, FUS, ALS2, SETX, GRN, ANG, APOE, APP, MAPT, PRNP, PSEN1 , (...)

View the complete list with 1 more genes
Specificity
29 %
Genes
86 %
Dystonia.

By Knight Diagnostic Laboratories - Molecular Diagnostic Center Oregon Health & Science University (United States).

SCP2, SGCE, SLC20A2, SLC2A1, SLC6A3, SPR, SUCLA2, SUOX, TAF1, TH, TIMM8A, TREX1, MCOLN1, FBXO7, CACNA1A, NPC2, PINK1, PANK2, SAMHD1, APTX , (...)

View the complete list with 57 more genes
Specificity
4 %
Genes
43 %
Movement Disorders Panel.

By Knight Diagnostic Laboratories - Molecular Diagnostic Center Oregon Health & Science University (United States).

SCP2, SGCE, SLC20A2, SLC2A1, SLC6A3, SNCA, SPR, SQSTM1, SUCLA2, SUOX, TAF1, TH, TIMM8A, TREX1, MCOLN1, VPS35, FBXO7, CACNA1A, NPC2, PINK1 , (...)

View the complete list with 72 more genes
Specificity
5 %
Genes
58 %
TREM2. Complete sequencing.

By Instituto de Medicina Genomica Instituto de Medicina Genomica (Spain).

TREM2
Specificity
100 %
Genes
15 %
Nasu-Hakola disease (sequence analysis of TREM2 gene).

By CGC Genetics (Portugal).

TREM2
Specificity
100 %
Genes
15 %
Hereditary dementias (NGS panel for 28 genes).

By CGC Genetics (Portugal).

SNCA, SNCB, SORL1, TARDBP, TIMM8A, TUBA4A, TYROBP, UBQLN2, VCP, CHCHD10, TREM2, TRPM7, CSF1R, CHMP2B, DNMT1, ATP13A2, FUS, GRN, HNRNPA1, HNRNPA2B1 , (...)

View the complete list with 8 more genes
Specificity
18 %
Genes
72 %
Amyotrophic Lateral Sclerosis and Frontotemporal Dementia Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics (United States).

SOD1, SQSTM1, TARDBP, TBK1, UBQLN2, VAPB, VCP, OPTN, CDH13, TREM2, CHMP2B, C9orf72, ARHGEF28, FUS, SETX, GRN, ANG, HNRNPA1, HNRNPA2B1, ANXA11 , (...)

View the complete list with 5 more genes
Specificity
24 %
Genes
86 %
TREM2-Related Disorders via TREM2 Gene Sequencing with CNV Detection.

By PreventionGenetics PreventionGenetics (United States).

TREM2
Specificity
100 %
Genes
15 %

You can get up to 264 more panels with our dedicated tool

Learn more

Sources and references

You can check the following sources for additional information.

ORPHANET Rare Disease Search Engine

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