Influence of JAK2V617F allelic burden in Cuban patients with essential thrombocythemia and primary myelofibrosis

Authors

  • Lesbia Fernández Martínez Instituto de Hematología e Inmunología
  • Heidys Garrote Santana Instituto de Hematología e Inmunología
  • Ana María Amor Vigil Instituto de Hematología e Inmunología
  • Carmen Alina Díaz Alonso Instituto de Hematología e Inmunología
  • Julio Dámaso Fernández Águila Hospital General Universitario “Gustavo Aldereguía Lima”, Cienfuegos https://orcid.org/0000-0002-1949-443X
  • Kalia Lavaut Sánchez Instituto de Hematología e Inmunología
  • Annelys González González Instituto de Hematología e Inmunología
  • Rosa María Lam Díaz Instituto de Hematología e Inmunología
  • Yamilé Quintero Sierra Instituto de Hematología e Inmunología
  • Adrián Romero González Instituto de Hematología e Inmunología
  • Daniel Cabrera Hernández Hospital "Gustavo Aldereguía Lima"c

Keywords:

JAK2V617F, essential thrombocythemia, primary myelofibrosis.

Abstract

Introduction: The frequency of the JAK2V617F mutation is estimated to be between 50 % and 60 % in patients with essential thrombocythemia and primary myelofibrosis. 30 % of patients with polycythemia vera and primary myelofibrosis and 2-4 % of patients with essential thrombocythemia show loss of heterozygosity.

Objectives: To evaluate the influence of the allelic load of the JAK2V617F mutation in the diagnosis of these diseases in Cuban patients and its relationship with clinical-hematological variables.

Methodology: A retrospective, descriptive and longitudinal study was carried out at the Institute of Hematology and Immunology between 2010 and 2020. All patients with suspected essential thrombocythemia and primary myelofibrosis with valid DNA samples were included. The allelic load of the mutation was quantified by real-time PCR.

Results: The mutation was detected in 66.7 % of those diagnosed with essential thrombocythemia and primary myelofibrosis. 62.5 % of the patients with primary myelofibrosis were homozygous for the mutation, while in essential thrombocythemia only 20.8 %. The difference in mean allelic loads between both diseases was statistically significant. No significant differences were found in the comparison of clinical and hematological variables in these diseases or association with allelic load, with the exception of platelets in primary myelofibrosis.

Conclusions: The study was limited by the small sample of patients, but it corresponds to other investigations that support the concept that the phenotypic presentation of myeloproliferative neoplasms is influenced by the mutational load of JAK2V617F.


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Author Biographies

Lesbia Fernández Martínez, Instituto de Hematología e Inmunología

Médico especialista de primer grado en Laboratorio clínico del IHI

Heidys Garrote Santana, Instituto de Hematología e Inmunología

Especialista de 2do grado en Hematología 2. Profesora Titular, Investigadora Titular.

Ana María Amor Vigil, Instituto de Hematología e Inmunología

Investigadora Titular

Carmen Alina Díaz Alonso, Instituto de Hematología e Inmunología

Investigadora Agregada

Julio Dámaso Fernández Águila, Hospital General Universitario “Gustavo Aldereguía Lima”, Cienfuegos

Especialista de 2do grado en Hematología Investigador auxiliar, Profesor asistente.

Kalia Lavaut Sánchez, Instituto de Hematología e Inmunología

especialista de 2do grado en Genética clínica. Investigadora auxiliar, Profesora auxiliar.

Annelys González González, Instituto de Hematología e Inmunología

Especialista de 1er grado en Laboratorio clínico.

Rosa María Lam Díaz, Instituto de Hematología e Inmunología

Especialista de 1er grado en Bioestadística.  Investigadora auxiliar.

Yamilé Quintero Sierra, Instituto de Hematología e Inmunología

especialista de 2do grado en Hematología Investigador auxiliar, Profesor auxiliar

Adrián Romero González, Instituto de Hematología e Inmunología

especialista de 2do grado en Hematología Investigador auxiliar, Profesor auxiliar

Daniel Cabrera Hernández, Hospital "Gustavo Aldereguía Lima"c

Especialista de 1er grado en Hematología. Profesor instructor

Published

2022-10-30

How to Cite

1.
Fernández Martínez L, Garrote Santana H, Amor Vigil AM, Díaz Alonso CA, Fernández Águila JD, Lavaut Sánchez K, et al. Influence of JAK2V617F allelic burden in Cuban patients with essential thrombocythemia and primary myelofibrosis. Rev Cubana Hematol Inmunol Hemoter [Internet]. 2022 Oct. 30 [cited 2025 May 26];38(4). Available from: https://revhematologia.sld.cu/index.php/hih/article/view/1655

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Section

Artículos Originales