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*Corresponding Author: Sven Neubert, Medizinische Klinik und Poliklinik II, Universitätsklinikum Würzburg, Würzburg, Germany.
Citation: Sven Neubert, Hermann Einsele, Max S. Topp, Johannes Duell. (2024), Successful Treatment of a Relapsed, Refractory Diffuse Large B-Cell Lymphoma (R/R DLBCL) Patient and Newly Diagnosed Meningeosis Lymphomatosa with CD19 CAR-T Cell Therapy and Intrathecal Chemotherapy: A Case Report, International Journal of Clinical Case Reports and Reviews, 20(2); DOI:10.31579/2690-4861/598
Copyright: © 2024, Sven Neubert. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Received: 03 November 2024 | Accepted: 20 November 2024 | Published: 30 November 2024
Keywords: chimeric antigen receptor-modified T cell; diffuse large B-cell lymphoma; meningeosis lymphomatosa; intrathecal chemotherapy; secondary central nervous system lymphoma
CD19 chimeric antigen receptor-modified (CAR)-T cell therapy can achieve similar response rates in Secondary central nervous system lymphoma (SCNSL) as in patients without central nervous system (CNS) involvement. However, the therapeutic success differs significantly when a distinction is made between parenchymal and meningeal involvement.
A 42-year-old female patient with r/r DLBCL was treated with CD19 CAR-T cell therapy. The patient was diagnosed with meningeosis lymphomatosa six days after the administration of the CAR-T cells. The lumbar puncture was performed because of severe therapy refractory headaches. We additionally administered intrathecal chemotherapy after reaching a Partial Remission (PR) with CAR T cells with Methotrexate, Cytarabine and Dexamethasone. At the time of the report the patient has been in Complete Remission (CR) in the CNS and regarding the peripheral DLBCL manifestations for two months.
To the authors' knowledge, this patient's case is the first case in which intrathecal chemotherapy was used in addition to CAR-T cells to treat clinically progressive meningeosis first diagnosed under CAR-T cell therapy. The follow-up progress so far appears promising, but the long-term course remains to be seen.
CD19 targeted CAR-T cell therapy is a very effective method to treat refractory or relapsed DLBCL with patients achieving nearly 50% complete response rates with that kind of therapy [1-2]. It has also already been shown that CAR-T cell therapy achieves similarly good response rates regarding parenchymal SCNSL and that the side effects are also comparable [3]. In case of meningeal involvement, the mean progression-free survival (PFS) after CD19 CAR-T cell therapy is significantly shorter [3]. Two of the most common side effects of CAR T-cell therapy are cytokine release syndrome (CRS) [4-5] and immune effector cell associated neurotoxicity (ICANS) [6-7]. So far, there is no evidence of an increased occurrence of either of those in patients with CNS involvement [3,8] Along with phenomenon of CRS, there is endothelial activation and increased permeability of the blood-brain barrier [9].
Meningeosis lymphomatosa as a secondary CNS manifestation in relapsed DLBCL is generally associated with a very poor prognosis [10]. There is a lack of clear standards of care due to low enrollment on clinical trials and historically limited options in terms of effective and well-tolerated therapies [11]. The prophylactic administration of CNS penetrating substances or prophylactic use of intrathecal chemotherapy has not yet brought any resounding success [11].
Here we report a 42-year-old female with r/r DLBCL who was diagnosed with meningeosis lymphomatosa for the first time six days after receiving CD19 CAR-T cell therapy with Axicabtagen Ciloleucel. With the accumulation of clinical data and increasing reports, we can create possible therapy optimizations and prognosis-improving therapy concepts.
A 42-year-old female was diagnosed with stage IVb follicular lymphoma in March 2023. the initial diagnosis and treatment took place externally. Initial manifestation included diffuse lymph node manifestations, diffuse skeletal infiltrations including the spine with intraspinal infiltration. With a Follicular Lymphoma International Prognostic Index of 3 the patient suffered from a high-risk disease. The patient was treated with percutaneous radiotherapy of a paravertebral lesions up to 28gy and systemically with 6 cycles of O-CHOP (Obinutuzumab, Cyclophosphamide, Vincristine, Doxorubicin, Prednisone) [12] until August 2023. With CR in computer tomography, maintenance therapy with Obinutuzumab was initiated. In November 2023 the patient developed obstructive jaundice and massive swelling in her left leg. Histologically, there was transformation of the FL into a germinal center B-cell-like DLBCL in both the bile duct and the left iliacus muscle. The patient was referred to our center, then received one cycle of R-GDP (Rituximab, Gemcitabine, Dexamethasone, Csiplatin) [13] as first line DLBCL treatment and was refractory to this therapy. The patient then was eligible for in lable CD19 CAR-T cell therapy with Axicabtagen Ciloleucel [14]. After Leukapharesis in December 2023 the patient received a bridging therapy with one cycle of R-Pola (Rituximab, Polatuzumab) [15]. In January 2024, the planned lymph-depleting chemotherapy had to be postponed due to a port infection.
At the end of January, the patient presented with recurrent fever episodes. With bland environmental diagnostics and calculated antibiotic therapy with piperacillin/tazobactam [16], the patient appeared fever free and clinically and laboratory analysis showed no evidence of an infection after one week. We then proceeded to start the lymph-depleting chemotherapy with fludarabine (30 mg/m2) and cyclophosphamide (500 mg/m2) for 3 days (day −5 to −3) [17]. Subsequently, an amount of 2×106 CD19 CAR-T-cells per kilogram was infused on day (d) 0 (February 1st 2024). In the subsequent phase, the patient developed fever from d1 onwards as part of CRS°I. Because the fever persisted for more than 72 hours with symptomatic therapy and anti-infective therapy, we administered tocilizumab (8mg/kg) and dexamethasone (10mg) a total of three times [18].
On day 6 after the CAR-T-cell-infusion the patient developed severe, treatment-resistant headaches and meningism. The cranial Magnetic resonance imaging (MRI) revealed no groundbreaking findings apart from an empty sella. We performed a diagnostic lumbar puncture on the same day and began calculated meningitis therapy, which was stopped after receiving negative virology and microbiology results. The lumbar puncture revealed infiltration of the cerebrospinal fluid (CSF) by the known DLBCL in the sense of meningeosis lymphomatosa (CD19+, CD38+, CD10+, CD79a+, CD5-) [19]. Detailed lab results are shown in Table 1, Figure 1 and Table 2.
Table 1: CSF laboratory values; Leu, leucocytes; n, number; %, percentage of total lymphocytes in FACS, d, days after CAR-T cell administration; w, weeks after CAR-T cell administration.
Table 2: Peripheral blood laboratory values; Leu, leucocytes; n, number; Lym, lymphocites; T-cells %, percentage of total lymphocytes in FACS; d, days after CAR-T cell administration; w, weeks after CAR-T cell administration
Figure 1: Graphical representation of the CSF cell distributions after CAR-T cell therapy; cell count only referring to Leucocytes, CSF, cerebrospinal fluid; d, day; w, week; n/mm3, Leucocytes per cubic millimeter
The patient had never received a lumbar puncture before and had never suffered from neurological symptoms before. The next day, samples were taken again and, due to newly diagnosed symptomatic meningeosis lymphomatosa, intrathecal triple therapy consisting of methotrexate 15mg, cytarabine 40mg and dexamethasone 4mg was initiated [20]. In addition, due to the increased CSF pressure of 40cmH2O, we drained 40ml of CSF. The patient's headache quickly improved. In the following days, a lumbar puncture with administration of intrathecal triple therapy and pressure measurement was performed every other day. In total, the patient received intrathecal therapy three times (d7, d9, d11). After the second administration, there was a decrease in the number of cells and, as a result, a normal CSF opening pressure.
Between the first and second lumbar puncture, i.e. before the administration of intrathecal therapy, a cell shift took place in the CSF. While on the first day (d6) there was a predominance of malignant B cells due to the lymphoma (99
In this work, we presented the case of a patient who developed refractory headaches during CAR-T cell therapy, which led to the diagnosis of meningeosis lymphomatosa due to DLBCL. A lumbar puncture had not been performed in advance as the diagnosis was established externally. With a CNS International Prognostic Index for Diffuse Large B-cell Lymphoma (IPI) of 3, the patient was at intermediate risk of CNS recurrence due to the lymphoma [22].
A previously known CNS infiltration by r/r DLBCL would not have changed the therapeutic strategy, as Real-World Results of CAR T-cell therapy have also shown good effectiveness in SCNSL in previous studies with complete response rates of 33% and partial response rates of 33% [23]. A Review compared the results for PCNSL and SCNSL. Similar response rates were found with 37% of the patients in each group maintaining a CR after 6 months [3] However, the type of manifestation significantly affected the PFS with meningeosis patients reaching a median PFS of only 1.1 months in recent real-world data [23]. A single-center retrospective analysis reported a median PFS of 83 days and a median OS of 129 days in a similar patient collective [24].
To the author`s knowledge there seem to be no reported cases with clinically progressive meningeosis lymphomatosa during CAR-T cell therapy. Since the patient was severely symptomatic, we decided to carry out cytoreductive intrathecal chemotherapy in addition to CAR-T cell therapy. There are a few case reports describing the use of intrathecal chemotherapy for neurotoxicity. There is no evidence of a compromise in the effect of CAR-T cells in these individual case reports [25]. At the time the case report was written, the patient had been in Complete Remission for two months with CAR-T cells still detectable in the CSF, already surpassing the median PFS mentioned in the trial [23].
The case of this patient also illustrates the important role of CRS causing a disruption of the blood-brain barrier, which allows CAR-T cells to flood in the cerebrospinal fluid. This mechanism is a possible explanation for the effectiveness of CAR-T cells in the central nervous system [6]. Nevertheless, CNS involvement is not usually associated with increased neurotoxicity with CAR-T cell therapy [3].
Overall, the data available for the case described is very limited. It remains to be seen how long-term the therapeutic success will be. In principle, the addition of intrathecal therapy in this patient population could represent a possible approach to improving long-term survival. However, well-designed studies are necessary to assess this. A potential negative effect of the intrathecal chemotherapy on the effectiveness of the CAR-T cell therapy cannot be completely ruled out either.
R/R DLBCL; Relapsed, Refractory Diffuse Large B-Cell Lymphoma; CAR, chimeric antigen receptor-modified; SCNSL, Secondary central nervous system lymphoma; CNS, central nervous system; PR, Partial Remission; CR, Complete Remission; PFS, progression-free survival; CRS, cytokine-release syndrome; ICANS, immune effector cell associated neurotoxicity; d, day; MRI, Magnetic resonance imaging; CSF, cerebrospinal fluid; FACS, fluorescence-activated cell sorting; PET-CT, positron emission tomography-computed tomography scan; IPI, International Prognostic Index for Diffuse Large B-cell Lymphoma
Acknowledgements
Conceptualization: SN, JD, MT. Data curation: SN, JD. Formal analysis: SN. Resources: JD, MT. Supervision: JD, MT. Validation: JD, MT. Writing – original draft: SN. Writing – review & editing: JD, MT, HE. All authors contributed to the article and approved the submitted version.
Ethics Statement
The patient was informed about the intention to scientifically process and publish her case and gave her written consent.
Author Contributions
Conceptualization: SN, JD, MT. Data curation: SN, JD. Formal analysis: SN. Resources: JD, MT. Supervision: JD, MT. Validation: JD, MT. Writing – original draft: SN. Writing – review & editing: JD, MT, HE. All authors contributed to the article and approved the submitted version.
Funding
Not applicable, as no funding was used.
Conflict of Interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Publisher’s Note
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.
Data Availability Statement
The original contributions presented in the study are included in the article/supplementary material. Further inquiries can be directed to the corresponding authors.
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