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Prognostic significance of CD30 expression in diffuse large B-cell lymphoma: A systematic review with meta-analysis

Journal

JOURNAL OF ORAL PATHOLOGY & MEDICINE
Volume 50, Issue 6, Pages 587-593

Publisher

WILEY
DOI: 10.1111/jop.13208

Keywords

brentuximab vedotin; CD30; diffuse large B-cell lymphoma; lymphoma; prognosis

Funding

  1. Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior
  2. Fundacao de Amparo a Pesquisa do Estado de Minas Gerais
  3. Sao Paulo State Research Foundation
  4. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [305493/2018-3, 455644/2018-1, 404710/2018-2, 310797/2019-5]

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The expression of CD30 in DLBCL is associated with clinicopathological features and patients' survival, showing a higher survival rate and better prognosis regardless of the cut-off values used to determine CD30 positivity.
Background CD30 is variably expressed in diffuse large B-cell lymphoma (DLBCL), but its prognostic potential for the affected patients remains debatable and unclear. Therefore, we aimed to determine the frequency of CD30 expression in DLBCL and its potential for prognostic determination. Methods An electronic systematic review was performed using multiple databases, followed by a quantitative meta-analysis to assess the frequency of CD30 expression with positivity cut-off values of >0% and >20%, and to determine its association with clinicopathological features and patients' survival. Results Using a cut-off value >0%, we observed that 3.5%-59.1% of the cases were considered positive for CD30. There was a significant association of the protein expression with a lower number of extra-nodal sites affected by the neoplasm, with Ann Arbor advanced stage, the absence of B-symptoms, the lack of MYC and BCL2 translocations, and a lower ECOG performance. Using a cut-off value >20%, we observed that 2.5%-36.7% of the cases were considered positive for CD30, being significantly associated with a lower number of extra-nodal sites affected by the neoplasm, Ann Arbor stages III/IV, non-GCB tumours, the lack of MYC and BCL2 translocations, and a lower ECOG value. CD30 expression was significantly associated with a better survival rate, regardless of what cut-off parameter was used. Conclusion Despite variations in the cut-off values used to determine CD30 positivity in DLBCL, the expression of this protein seems to be associated with a higher survival rate and better prognosis.

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