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Talassemia beta

Última revisão das evidências: 18 Sep 2026
Última atualização do tópico: 10 Jun 2026

Resumo

Definição

História e exame físico

Principais fatores diagnósticos

  • país de origem ou ascendência
  • história familiar
  • assintomático
Detalhes completos

Outros fatores diagnósticos

  • letargia
  • distensão abdominal
  • falha no ganho de peso
  • altura e peso baixos
  • palidez
  • alterações espinhais
  • cabeça grande
  • fácies de esquilo
  • dentes desalinhados
  • hepatoesplenomegalia
  • icterícia
Detalhes completos

Fatores de risco

  • história familiar positiva
Detalhes completos

Investigações diagnósticas

Primeiras investigações a serem solicitadas

  • Hemograma completo
  • esfregaço de sangue periférico
  • contagem de reticulócitos
  • análise de hemoglobina
  • TFHs
  • radiografias simples do crânio
  • ultrassonografia abdominal
  • radiografia simples de ossos longos
Detalhes completos

Investigações a serem consideradas

  • teste genético
  • tipagem HLA (antígeno leucocitário humano)
Detalhes completos

Algoritmo de tratamento

CONTÍNUA

traço talassêmico beta

talassemia beta intermédia: não dependente de transfusão

talassemia beta intermédia: dependentes de transfusão

talassemia beta maior

Colaboradores

Autores

Sujit Sheth, MD

Professor of Clinical Pediatrics

Weill-Cornell Medical College

New York, NY

Declarações

SS is a consultant for Bristol Myers Squibb (formerly Celgene), manufacturer of luspatercept; for Bluebirdbio, developer of a gene therapy product for transfusion dependent beta-thalassaemia; and for Agios, related to mitapivat for thalassaemia. Steering committee member for CTX001, gene editing product by CRISPR/Vertex. Participation in multicentre trials conducted by LaJolla, Bristol Myers Squibb, Terumo, Novartis, Dispersol. SS is also an author of references cited in this topic.

Revisores

Christoph Pechlaner, MD

Associate Professor of Medicine

Innsbruck Medical University

Innsbruck

Austria

Declarações

CP declares that he has no competing interests.

Michael R. Jeng, MD

Associate Professor

Pediatric Hematology & Oncology

Stanford University School of Medicine

Palo Alto, CA

Disclosures

MRJ declares that he has no competing interests.

Peer reviewer acknowledgements

BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.

Disclosures

Peer reviewer affiliations and disclosures pertain to the time of the review.

References

Our in-house evidence and editorial teams collaborate with international expert contributors and peer reviewers to ensure that we provide access to the most clinically relevant information possible.

Key articles

Bain BJ, Daniel Y, Henthorn J, et al. Significant haemoglobinopathies: A guideline for screening and diagnosis: A British Society for Haematology guideline. Br J Haematol. 2023 Jun;201(6):1047-65.Full text  Abstract

Farmakis D, Angastiniotis M, Eleftheriou, A. A short guide for the management of transfusion dependent thalassaemia. 2017 [internet publication].Full text

Sharma A, Easow Mathew M, Puri L. Splenectomy for people with thalassaemia major or intermedia. Cochrane Database Syst Rev. 2019 Sep 17;9:CD010517.Full text  Abstract

Taher A, Musallam K, Cappellini MD. Guidelines for the management of non transfusion dependent thalassaemia (NTDT) 2nd Edition. 2017 [internet publication].Full text

Reference articles

A full list of sources referenced in this topic is available to users with access to all of BMJ Best Practice.
  • Differentials

    • Anemia diseritropoética congênita (ADC)
    • Deficiência de piruvato quinase (PK)
    • Anemia ferropriva leve
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  • Guidelines

    • Significant haemoglobinopathies: a guideline for screening and diagnosis
    • Carrier screening for genetic conditions
    More Guidelines
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