CD70.md
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# CD70
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## Overview
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-CD70 genetic aberrations are relatively common in DLBCL and appear more frequent in certain DLBCL patient populations. For instance, in a Chinese DLBCL cohort, 24% of cases exhibited CD70 genetic changes, compared to 10.8% in a Swedish cohort.<sup>1</sup> CD70 mutations are associated with the BN2 genetic subtype of DLBCL.
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+CD70 is a costimulatory molecule expressed on some activated lymphocytes and has a role in T-cell-mediated immune responses.<sup>1</sup> CD70 aberrations are relatively common in DLBCL and appear more frequent in certain DLBCL patient populations. For instance, in a Chinese DLBCL cohort, 24% of cases exhibited CD70 genetic changes, compared to 10.8% in a Swedish cohort.<sup>1</sup> CD70 mutations are associated with the BN2 genetic subtype of DLBCL.<sup>2</sup> The mutation pattern in CD70 is consistent with the preferential accumulation of *inactivating mutations*. Loss of CD70 protein expression has been described.<sup>1</sup> Genetic perturbation limits the development of an effective CD8+ T-cell immune response in Bcl6-driven DLBCL. In mouse models, CD70 loss promoted lymphomagenesis, indicating that CD70/CD27 co-stimulation is crucial for anti-tumor immunity
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## Relevance tier by entity
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# References
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1. *Nie M, Ren W, Ye X, Berglund M, Wang X, Fjordén K, Du L, Giannoula Y, Lei D, Su W, Li W, Liu D, Linderoth J, Jiang C, Bao H, Jiang W, Huang H, Hou Y, Zhu S, Enblad G, Jerkeman M, Wu K, Zhang H, Amini RM, Li ZM, Pan-Hammarström Q. The dual role of CD70 in B-cell lymphomagenesis. Clin Transl Med. 2022 Dec;12(12):e1118. doi: 10.1002/ctm2.1118. PMID: 36471481; PMCID: PMC9722974.*
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-2. **Wright GW, Huang DW, Phelan JD, Coulibaly ZA, Roulland S, Young RM, Wang JQ, Schmitz R, Morin RD, Tang J, Jiang A, Bagaev A, Plotnikova O, Kotlov N, Johnson CA, Wilson WH, Scott DW, Staudt LM. A Probabilistic Classification Tool for Genetic Subtypes of Diffuse Large B Cell Lymphoma with Therapeutic Implications. Cancer Cell. 2020 Apr 13;37(4):551-568.e14. doi: 10.1016/j.ccell.2020.03.015. PMID: 32289277; PMCID: PMC8459709.**
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+2. *Wright GW, Huang DW, Phelan JD, Coulibaly ZA, Roulland S, Young RM, Wang JQ, Schmitz R, Morin RD, Tang J, Jiang A, Bagaev A, Plotnikova O, Kotlov N, Johnson CA, Wilson WH, Scott DW, Staudt LM. A Probabilistic Classification Tool for Genetic Subtypes of Diffuse Large B Cell Lymphoma with Therapeutic Implications. Cancer Cell. 2020 Apr 13;37(4):551-568.e14. doi: 10.1016/j.ccell.2020.03.015. PMID: 32289277; PMCID: PMC8459709.*
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+3. *Mandato, E., Calabretta, E., Bai, G., Song, L., Sun, Y., Shanmugam, V., Paczkowska, J., Choi, I., Redd, R., Tang, M., Lawton, L., Neuberg, D., Rodig, S., Michor, F., Zhang, B., & Shipp, M. (2022). Abstract A38: Cd70 genetic perturbation limits the development of an effective CD8+ T-cell immune response to Bcl6-driven diffuse large B-cell lymphoma. Blood Cancer Discovery. https://doi.org/10.1158/2643-3249.lymphoma22-a38.*