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CAR-T 治疗后一例克隆性扩增的淋巴结 T 细胞群被诊断为 T 细胞淋巴瘤

英文原题:A clonally expanded nodal T-cell population diagnosed as T-cell lymphoma after CAR-T therapy.

查看英文原题

A clonally expanded nodal T-cell population diagnosed as T-cell lymphoma after CAR-T therapy.

PubMed 2025/08/12(内容时间) Nat Commun Q1 · IF 18.1(JCR 2025)

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中文摘要

嵌合抗原受体(CAR)T 细胞治疗后出现继发恶性肿瘤的报告,以及 CAR-T 相关恶性转化的可能性,提示临床需保持谨慎。本文报告一例弥漫大 B 细胞淋巴瘤患者,在 CAR-T 治疗后 2.5 年、合并 COVID-19 感染时出现新的淋巴结肿大,组织病理特征符合 T 细胞淋巴瘤(TCL)。通过基因组测序和单细胞空间转录组学进行深入分子分析,发现一群高度增殖的克隆性 T 细胞共表达 CD4 和 CD8,具有双等位基因 TCR 重排,但未发现 CAR 构建体证据。扩增的克隆型呈现 T 滤泡辅助(TFH)细胞转录程序,并占据淋巴结内免疫排斥的空间区域,支持其具有 TFH 样肿瘤性 T 细胞行为。值得注意的是,后续影像随访显示淋巴结肿大自行消退。本研究强调,需要更深入理解 CAR-T 后克隆性 T 细胞淋巴增殖性疾病,以避免不必要治疗,并提高 TCL 诊断方法的特异性。

展开英文摘要原文

Reports of secondary malignancies after chimeric antigen receptor (CAR)-T and possible CAR-T derived malignant transformation necessitate caution.

Here we describe a patient with diffuse large B-cell lymphoma who developed new lymphadenopathy 2. 5 years after CAR-T in the context of COVID-19 infection with histopathologic features consistent with T-cell lymphoma (TCL). Deep molecular interrogation with genomic sequencing and single-cell spatial transcriptomics reveals a highly proliferative clonal T-cell population co-expressing CD4 and CD8 with biallelic TCR rearrangement and no evidence of the CAR construct.

The expanded clonotype displayed T follicular helper (TFH) cell transcriptomic programs and occupies immune-excluded spatial niches within the lymph node, supportive of TFH-like neoplastic T cell behavior. Remarkably, the lymphadenopathy spontaneously resolved on interval imaging.

Our data underscore the need for better understanding of post-CAR-T clonal T-cell lymphoproliferative disorders to avoid unnecessary treatment and higher specificity in diagnostic methods for TCL.

论文信息

作者
Maurer K、Weir JA、Nagler A、Haradhvala NJ、Bharadwaj H、Shapiro J、Alakwe S、Kumar V
第一作者单位
Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.United States
通讯作者单位
Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA. caron_jacobson@dfci.harvard.edu.United States
文献类型
病例报告
期刊
Nature communications2025 Aug 12
原文标识
PubMed 40796743 · DOI 10.1038/s41467-025-62709-7