Role of Genetic Polymorphisms on Response to R-Chopregimen in Diffuse Large B-Cell Lymphoma Patients: An Interim Analysis of a Multicenter Prospective Pharmacogenetic Study

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 2483-2483
Author(s):  
Luigi Rigacci ◽  
Gabriele Perrone ◽  
Stefania Nobili ◽  
Sofia Kovalchuk ◽  
Benedetta Puccini ◽  
...  
Keyword(s):  
Interim Analysis ◽  
Cell Lymphoma ◽  
Risk Group ◽  
B Cell Lymphoma ◽  
Nucleotide Polymorphisms ◽  
Wild Type ◽  
Pharmacokinetics And Pharmacodynamics ◽  
Bulky Disease ◽  
Pathological Characteristics ◽  
Large B Cell Lymphoma

Abstract Introduction: Standard chemotherapy represented by the R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone) regimen is successful in about 60% of patients (pts) with diffuse large B-cell lymphoma (DLBCL). Pts who do not benefit from this treatment, due to the development of tumor drug resistance, have a very poor prognosis. Currently, knowledge on reasons of treatment related failures in DLBCL are scanty and predictive biomarker of response are largely unknown. We hypothesized that polymorphisms of gene involved in the pharmacokinetics and pharmacodynamics of drugs included in R-CHOP regimen may play a role in predicting the outcome in DLBCL pts.Thus, we designed a multicentre prospective pharmacogenetic trial aimed at identifying gene polymorphisms potentially predictive of drug efficacy/resistance in DLBCL pts treated with R-CHOP. An interim analysis on the first 80 enrolled ptswas planned and has been performed. Methods: The study included chemonaive DLBCL pts at various stages of disease candidate to an R-CHOP standard treatment. The Ethical Committee of each participating centre approved the pharmacogenetic protocol, and all pts signed a written informed consent. According to the aims of this interim analysis, the impact of single nucleotide polymorphisms (SNPs) on R-CHOP efficacy was evaluated by objective response (OR) rate at the end of treatment. The efficacy of R-CHOP was evaluated according to the Cheson criteria by performing standard hematochemical and instrumental (TC and FDFG-PET) tests and defining complete remission (CR), partial remission (PR), non response or progressive disease (PD). Genomic DNA wasextracted from peripheral blood of 80 pts. Twentysingle nucleotide polymorphisms (SNPs) from18candidate genes (ABCB1, ABCC1, ABCC2, ABCG2, CYBA, CYP2C9, FCGR2A, GSTP1, IL2, MLH1, NCF4, NQO1, NQO2, RAC2, TNF, TOP2A, TP53, TUBB)involved in pharmacokinetics and pharmacodynamics of R-CHOP (www.pharmgkb.org) have been analysed by a genotyping array based on Affimetrix methodology. Univariate analysis was performed to evaluate associations between polymorphisms and clinical/pathological characteristics or OR (Fisher exact test). Multivariate logistic regression analysis was performed to estimate adjusted odds ratios along with the corresponding 95% confidence intervals for the polymorphisms and OR. Results: Median age was 63 years. There were 37 men and 43 women. 47.5 % of pts were in stage I-II,52.5 % of pts in stage III-IV. 27.5% of ptshad bulky disease, 43.8 % of pts had involvement of extranodal site. 47.5% of pts had pathological LDH value. According to the revised IPI, 15 % pts were in the low risk group, 58.7 % in the intermediate risk group, and 26.3 % in the high risk group.Overall, 468 courses of R-CHOP had been administered (mean: 5.85 courses, range: 4-6). 81% of pts had CR to R-CHOP whereas the remaining showed PR (14%) or PD(5%). No statistically significant correlation was found between OR and clinical characteristics of pts.However, stage III-IV pts showed a worst OR than stage I-II pts (77% vs 87% of CR, respectively); pts with bulky disease had worst OR than non-bulky disease pts(73% vs 84.5% of CR, respectively); ptswith R-IPI 3-5 a worst OR than pts with R-IPI 0-2 (71.5% vs 85% of CR, respectively). Univariate and multivariateanalysis identified TOPOII rs13695as a predictor of OR (p=0.042). Pts with CT or TT genotypesshowed worst OR than CC wild-type homozygous pts (odds ratio 3.070, CI95% 1.113-13.457). Also, a statistical trend toward significance was observed for MLH1 rs1800734 polymorphism (p=0.062): ptswith homozygous genotype for the mutant allele showed a better OR than wild-type and heterozygous pt genotypes. Conclusions: No significant relationship between clinical/pathological characteristics and OR was observed. Our preliminary data show that SNPs affecting a gene involved in doxorubicin pharmacodynamics, i.e. the drug target TOPOII, as well asone of the major components of DNA mismatch repair, i.e. MLH1 gene,may predict response in DLBCL pts treated with R-CHOP. These preliminary results from the interim analysis are promising and warrant completion of pt accrual to reach the planned number of cases at the end of our study. Acknowledgments This work was supported by a grant from the Associazione Giacomo Onlus, Castiglioncello (LI), Italy to E.M. and Cassa di Risparmio di Firenze, Firenze, Italy to S.N. Disclosures No relevant conflicts of interest to declare.

scholarly journals MicroRNA-181a Inhibits Activated B-Cell-Like Diffuse Large B-Cell Lymphoma Progression by Repressing CARD11

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Danxia Zhu ◽  
Cheng Fang ◽  
Wenting He ◽  
Chen Wu ◽  
Xiaodong Li ◽  
...  
Keyword(s):  
B Cell ◽  
Binding Site ◽  
Cell Lines ◽  
Expression Vector ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Wild Type ◽  
Protein Levels ◽  
Large B Cell Lymphoma ◽  
Large B Cell

We investigated the role of miR-181a in diffuse large B-cell lymphoma (DLBCL) and its potential target genes. miR-181a levels were lower in activated B-cell- (ABC-) like DLBCL cells than that in germinal center B-cell- (GCB-) like DLBCL cells. Overexpression of miR-181a in ABC-like DLBCL cell lines (OCI-LY10 and U2932) resulted in G0/G1 cell cycle arrest, increased apoptosis, and decreased invasiveness. miRNA target prediction programs (miRanda, TargetScan, and miRDB) identified caspase recruitment domain-containing protein 11 (CARD11) as a putative miR-181a target. CARD11 mRNA and protein levels were higher in the ABC-like DLBCL than that in GCB-like DLBCL. Moreover, CARD11 mRNA and protein levels were downregulated in the OCI-LY10 and U2932 cell lines overexpressing miR-181a. Dual luciferase reporter assays confirmed the miR-181a binding site in the CARD11 3′UTR region. OCI-LY10 and U2932 cells transfected with a CARD11 expression vector encoding miR-181a with a mutated binding site showed higher CARD11 protein levels, cell viability, G2/M phase cells, and invasiveness compared to those transfected with a wild-type CARD11 expression vector. Nude mice xenografted with OCI-LY10 cells with overexpressed wild-type miR-181a generated smaller tumors compared to those with overexpressed mutated binding site of CARD11 3′UTR and miR-181a. These results indicate that miR-181a inhibits ABC-like DLBCL by repressing CARD11.

scholarly journals Impact of Genetic Polymorphism of Myeloid Differentiation Primary Response Gene 88, Enhancer of Zeste Homolog 2, and B-cell Lymphoma 2 like 11 in Patients with Diffuse Large B Cell Lymphoma Treated with Rituximab, Cyclophosphamide, Doxorubicin, Vincristin

2021 ◽  
Vol 9 (A) ◽  
pp. 98-105
Author(s):  
Hussam Zawam ◽  
Noha E. Ibrahim ◽  
Rasha Salama ◽  
Mai Samir ◽  
Walaa Abdelfattah ◽  
...  
Keyword(s):  
B Cell ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Poor Response ◽  
Cell Of Origin ◽  
Bulky Disease ◽  
Large B Cell Lymphoma ◽  
Younger Age ◽  
Extranodal Disease ◽  
Large B Cell

BACKGROUND: Despite the growing landscape of genetic drivers in Diffuse Large B-cell Lymphoma, yet their clinical implication is still unclear and R-CHOP regimen remains a “one size fits all” therapy. We aimed in this study to examine the prevalence of EZH2, BCL211 and MYD 88 genetic polymorphisms in DLBCL patients and correlate the results with various clinical and survival outcomes. METHODS: Genotyping of MYD88 (rs387907272 T/C), EZH2 (rs3757441 C/T), and BCL2L11 (rs3789068 A/G) polymorphisms were conducted using real time polymerase chain reaction analysis in a total of 75 DLBCL patients. RESULTS: Most of our cases carried the wild TT genotype of MYD88 gene (64%), the mutant TT genotype of EZH2 gene (52%) and the wild AA genotype of BCL2L11 gene (48%). Regarding cell of origin, Germinal Centre (GC) phenotype was present in 56% of cases while 44% expressed the Post-GC (PGC) phenotype. Poor response outcome to first line R-CHOP was significantly correlated with the mutated CC genotype of MYD 88 (p=0.02), while better response to R-CHOP was significantly associated with younger age <50 years (p <0.0001), good PS (p=0.046), normal LDH level (p=0.003), earlier stage (p <0.0001), good IPI score (p=0.009), absence of extranodal disease (p <0.0001) and absence of bulky disease (p=0.004). The median PFS and the 2 year OS were significantly higher in younger age, earlier stage, good IPI score, absence of extranodal disease, absence of bulky disease and in GC phenotype. CONCLUSIONS: Our results emphasized that the mutated genotype of MYD 88 gene polymorphism is significantly associated with poor response to R-CHOP therapy.

scholarly journals Combined EZH2 and Bcl-2 inhibitors as precision therapy for genetically defined DLBCL subtypes

2020 ◽  
Vol 4 (20) ◽  
pp. 5226-5231
Author(s):  
Hanna Scholze ◽  
Regan E. Stephenson ◽  
Raymond Reynolds ◽  
Shivem Shah ◽  
Rishi Puri ◽  
...  
Keyword(s):  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Wild Type ◽  
3 Dimensional ◽  
Molecular Alterations ◽  
Dual Targeting ◽  
Large B Cell Lymphoma ◽  
Short Course ◽  
Precision Therapy

Abstract Molecular alterations in the histone methyltransferase EZH2 and the antiapoptotic protein Bcl-2 frequently co-occur in diffuse large B-cell lymphoma (DLBCL). Because DLBCL tumors with these characteristics are likely dependent on both oncogenes, dual targeting of EZH2 and Bcl-2 is a rational therapeutic approach. We hypothesized that EZH2 and Bcl-2 inhibition would be synergistic in DLBCL. To test this, we evaluated the EZH2 inhibitor tazemetostat and the Bcl-2 inhibitor venetoclax in DLBCL cells, 3-dimensional lymphoma organoids, and patient-derived xenografts (PDXs). We found that tazemetostat and venetoclax are synergistic in DLBCL cells and 3-dimensional lymphoma organoids that harbor an EZH2 mutation and an IGH/BCL2 translocation but not in wild-type cells. Tazemetostat treatment results in upregulation of proapoptotic Bcl-2 family members and priming of mitochondria to BH3-mediated apoptosis, which may sensitize cells to venetoclax. The combination of tazemetostat and venetoclax was also synergistic in vivo. In DLBCL PDXs, short-course combination therapy resulted in complete remissions that were durable over time and associated with superior overall survival compared with either drug alone.

scholarly journals A multi-institutional and case-matched control study on treatment outcomes of consolidative radiotherapy after a full course of R-CHOP compared with R-CHOP alone in Stage I–II diffuse large B-cell lymphoma (KROG 17-02)

2019 ◽  
Vol 60 (5) ◽  
pp. 677-684
Author(s):  
Mi Joo Chung ◽  
Won Kyung Cho ◽  
Dongryul Oh ◽  
Keun-Yong Eom ◽  
Jin Hee Kim ◽  
...  
Keyword(s):  
B Cell ◽  
Treatment Outcomes ◽  
Tumor Size ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Stage I ◽  
Chop Chemotherapy ◽  
Bulky Disease ◽  
Large B Cell Lymphoma ◽  
Large B Cell

Abstract We compared treatment outcomes between rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) chemotherapy alone with R-CHOP followed by consolidative radiation therapy (RT) in diffuse large B-cell lymphoma (DLBCL). We analyzed 404 patients with Stage I–II DLBCL who received six to eight cycles of R-CHOP and achieved a good response after a full course of chemotherapy. Propensity-score matching was used to assess the role of consolidative RT. The R-CHOP alone group (n = 184) was matched in a 1:2 ratio with the R-CHOP plus RT group (n = 92). Twenty-four (13.0%) of 184 patients receiving R-CHOP alone and 8 (8.7%) of 92 patients receiving R-CHOP plus RT had bulky diseases (>7.5 cm). A Deauville score of 1–2 was achieved for 159 (86.4%) of 184 patients receiving R-CHOP alone and 84 (91.3%) of 92 patients receiving R-CHOP plus RT. After a median follow-up time of 42 months, the recurrence-free survival (RFS) rate (86.7% vs 93.0%, P = 0.464) and overall survival rate (88.3% vs 95.1%, P = 0.295) at 5 years did not differ significantly between the R-CHOP alone and R-CHOP plus RT arms. In the additional multivariate analyses, large tumor size (>7.5 cm) was significantly associated with decreased RFS (hazard ratio, 2.368 and confidence interval, 1.837–6.697; P = 0.048). Consolidative radiation was not a significant factor for RFS (P = 0.563). Tumor size was a significant factor for RFS in the rituximab era. The outcome of omitting consolidative RT for good responders after six to eight cycles of R-CHOP chemotherapy was acceptable in early-stage DLBCL without a bulky disease.

scholarly journals A 70% cut-off for MYC protein expression in diffuse large B cell lymphoma identifies a high-risk group of patients

Haematologica ◽  
2020 ◽  
Vol 105 (11) ◽  
pp. 2667-2670 ◽  
Author(s):  
Marita Ziepert ◽  
Stefano Lazzi ◽  
Raffaella Santi ◽  
Federica Vergoni ◽  
Massimo Granai ◽  
...  
Keyword(s):  
High Risk ◽  
Protein Expression ◽  
B Cell ◽  
Cell Lymphoma ◽  
Risk Group ◽  
B Cell Lymphoma ◽  
High Risk Group ◽  
Large B Cell Lymphoma ◽  
Large B Cell

Acquired Immunodeficiency and Malnutrition in Patients Treated with Bi-Weekly CHOP-Based Chemotherapy for Diffuse Large B-Cell Lymphoma.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 2443-2443
Author(s):  
Dorte Tholstrup ◽  
Mads Hansen ◽  
Peter De Nully Brown ◽  
Jesper Jurlander
Keyword(s):  
T Cell ◽  
B Cell ◽  
Opportunistic Infections ◽  
Cell Lymphoma ◽  
Bone Marrow Involvement ◽  
B Cell Lymphoma ◽  
Preliminary Evaluation ◽  
Bulky Disease ◽  
Large B Cell Lymphoma ◽  
Large B Cell

Abstract During the recent years CHOP-14/CHOEP-14 in combination with the monoclonal anti-CD20 antibody Rituximab has become the standard choice of treatment for non-localized, poor risk Diffuse Large B-Cell Lymphoma. We, and others, have observed a relative high incidence of opportunistic infections not normally associated with the short neutropenic periods of CHOP-based treatment. We therefore introduced a prospective risk-assessment study in February 2005. The aim of the study is to assess the degree of malnutrition and immunodeficiency that may be associated with bi-weekly regimens. This is a preliminary evaluation of the first 27 patients included. Median age was 60 (31–80), 21 (78%) had CS III/IV disease, 14 (52%) extranodal involvement, 19 (70%) elevated LDH, 9 (33%) a Performance Score ≥2, i.e.13 (48%) presented with IPI 3–5 disease. Furthermore, 7 (26%) had bone marrow involvement, 8 (30%) bulky disease and 17 (63%) B-symptoms. All patients received 6 or 8 cycles of CHOP-14/CHOEP-14, and 15 patients received Rituximab at day 1 of each cycle. Patients were examined four times: 1) before 1st cycle, 2) 14 days after 4th cycle, 3) 14 days after last cycle (i.e. 6th or 8th), and 4) 3 months after treatment. Examination included blood tests, bodyweight and DEXA-scans. 20 patients (74%) had a significant weight loss during treatment. However, 3/4 had regained normal weight three months later. Consistently, DEXA-scans demonstrated a significant reduction in total lean body mass in 12 (44%) patients. P-protein, p-albumin, and selected trace elements were decreased in about 1/4 of patients during treatment. However, most patients had significant declines in T-cell levels during treatment, and interestingly about 1/4 presented with very low T-cell levels at diagnosis. Thus, total CD3-count was low in 7 (26%) patients at diagnosis, and reduced under treatment in 23 (85%). Both CD4- and CD8-count was low in 6 patients at diagnosis, while CD4 was reduced under treatment in 24 and CD8 in 16 patients. Likewise, a significant decrease of IgA, IgM, and IgG subclasses developed during treatment (Table 1). We conclude that patients treated with bi-weekly CHOP-chemotherapy may develop severely decreased levels of T-cells and severe hypogammaglobulinemia, which may be related to an increased incidence of opportunistic infections such as PCP or CMV reactivation.

Favorable Results of Rituximab in Combination with CHOP in the Front-Line Treatment of Follicular Lymphoma Grade 3.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 2770-2770
Author(s):  
Luis Fayad ◽  
Michael Overman ◽  
Barbara Pro ◽  
Peter McLaughlin ◽  
Felipe Samaniego ◽  
...  
Keyword(s):  
Follicular Lymphoma ◽  
B Cell ◽  
Response Rate ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Bulky Disease ◽  
Large B Cell Lymphoma ◽  
Grade 3 ◽  
Large B Cell

Background: Follicular lymphoma grade 3 has a natural history that is more akin to that of diffuse large B-cell lymphoma. The addition of rituximab to standard CHOP has resulted in improved response and survival in diffuse large B-cell lymphoma. Information about outcomes in follicular lymphoma grade 3 is lacking. Methods: A single institution retrospective review of patients with follicular grade 3 lymphoma evaluated at the UTMDACC from 1999 to 2004. Patients were located from the UTMDACC lymphoma database. All patients were initially treated with R-CHOP. Results: Forty-five patients were identified: 51% male, 47% ≥60 years, and 87% follicular grade 3b. The LDH was elevated in 24%, ECOG performance status was >1 in 2%, and >1 site of extranodal involvement was present in 10%. Stage distribution was 11% stage I, 11% stage II, 42% stage III, and 36% stage IV, bulky disease (>7cm) was present in 11%, and B symptoms occurred in 13%. Beta-2 microglobulin was elevated in 57% with values >3 μg/dL in over 50%. IPI distribution was: 46% IPI Low, 38% LI, 11% IH, and 4% IPI High. Overall response rate was 100% with 96% complete responses. Relapse rate by IPI category was 24% for Low IPI, 18% for IPI LI, and 40% for IPI IH, and 100% for the two patients with High IPI. With median follow-up of 33 months, three year failure-free survival (FFS) is 73% (95% CI: 59 to 87%). One patient died (2%) with an overall survival (OS) at three years of 97% (95% CI: 93 to 100%). Conclusion: The addition of rituximab to CHOP provided a high response rate and excellent early survival in this group of mostly good prognosis patients. Relapses were still seen; longer follow-up is needed.

Efficacy of Dose-Dense R-CHOP-14 Chemoimmunotherapy Plus Pegfilgrastim for First-Line Treatment of Diffuse Large B-Cell Lymphoma (DLBCL) in Low Risk Patients: An Interim Analysis of an Open-Label Clinical Trial in Spain. On Behalf of GEL/TAMO (Spanish Group of Lymphoma).

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 3443-3443
Author(s):  
Eva Gonzalez-Barca ◽  
Antonio Salar ◽  
Joan Bargay ◽  
Jose F. Tomas ◽  
Miguel A. Canales ◽  
...  
Keyword(s):  
Interim Analysis ◽  
Cell Lymphoma ◽  
Remission Rate ◽  
B Cell Lymphoma ◽  
Low Risk ◽  
Open Label ◽  
Efficacy Analysis ◽  
Large B Cell Lymphoma ◽  
Dose Dense

Abstract Diffuse large B-cell lymphoma (DLBCL) is the most prevalent form of non-Hodgkin lymphoma. The addition of rituximab to the standard treatment with 3-weekly CHOP (R-CHOP) has notably improved the survival in DLBCL. However, it is unclear whether a dose-dense regimen of 2-weekly R-CHOP-14 is efficacious and well tolerated. The aim of the current study is to determine the efficacy and tolerability of 6 cycles of dose dense R-CHOP-14 for low risk DLBCL. This is an ongoing, open-label, multicentre, single-arm clinical trial. Eligible patients are aged 18–65 years, with CD20+ DLBCL, an international prognostic index (IPI) of 0–2 and an Eastern Cooperative Oncology Group (ECOG) performance status of 0–2. Six cycles of R-CHOP-14 are administered with pegfilgrastim 6 mg sc on day 2 of each cycle. Patients with tumor masses > 10 cm are allowed to receive radiotherapy with 30 Gy, and those at risk of central nervous system infiltration receive prophylactic liposomal cytarabine with each chemotherapy cycle. An interim analysis of efficacy was planned when the first 25 patients were included. Patients receiving ≥1 dose of study medication were included in the tolerability analysis, while 130-day follow-up was required for inclusion in the efficacy analysis. The first 25 patients were included between June 2006 and January 2007: mean age was 46.5 years, 56% were male. The characteristics of the disease at diagnosis were as follows: stage III-IV 40%, ECOG 0–1 96%, B-symptoms 12%, bulky disease 28%, extranodal involvement 56% (most frequently spleen and gastrointestinal system), elevated LDH 44%, elevated β2microglobulin 36%, IPI 0–1 60%. All patients completed 6 cycles of chemotherapy (150 cycles). Among the 125 cycles excluding the first one, there were 7 (5.5%) delays, 3 because of neutropenic fever, 2 because neutropenia, and 2 because of infection without neutropenia. Dose modification due to hematological toxicity occurred in 4 cycles (3.2%) all in the same patient. Twenty-two patients were included in the efficacy analysis. The global response rate, the complete remission rate and the partial remission rate were 91%, 81.8% and 9.1%, respectively. No patient exhibited disease progression or relapse, whereas 2 (9.1%) had stable disease. All 22 patients were alive at 130 days follow-up. In this interim analysis, high remission rates suggest that dose dense R-CHOP-14 with pegfilgrastim support is an efficacious treatment for low risk DLBCL in patients younger than 65. The regimen was well tolerated with most patients completing their full treatment schedule as planned.

Treatment of Diffuse Large B-Cell Lymphoma with Rituximab, Intensive Induction and High-Dose Consolidation: The Final Analysis of the Czech Lymphoma Study Group (CLSG) R-MegaCHOP-ESHAP-BEAM (R-MEB) Trial.

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 21-21
Author(s):  
Marek Trneny ◽  
Robert Pytlik ◽  
David Belada ◽  
Katerina Kubackova ◽  
Ingrid Vasova ◽  
...  
Keyword(s):  
B Cell ◽  
Cell Lymphoma ◽  
Performance Status ◽  
Bone Marrow Involvement ◽  
B Cell Lymphoma ◽  
High Dose ◽  
Cell Transplant ◽  
Bulky Disease ◽  
Large B Cell Lymphoma ◽  
Large B Cell

Abstract Background. Combined immunochemotherapy with CHOP and rituximab have improved the outcome of patients with diffuse large B-cell lymphoma (DLBCL). and related diseases. However, the cure rate of patients with IPI 3–5 or aaIPI 3 is still only about 50% with this regimen. Given the feasibility of previous CLSG regimens based on high-dose CHOP-ESHAP induction and BEAM consolidation, we have conducted a phase II trial combining this approach with rituximab immunotherapy. Patients and methods. Patients aged 18–65 years with DLBCL and age-adjusted IPI (aaIPI) 2–3 were treated with three cycles of high-dose CHOP (MegaCHOP - cyclophosphamide, 3 g/m2, vincristine 2 mg, adriamycin, 75 mg/m2, and prednisone, 300 mg/m2) with G-CSF every 3 weeks, followed by three cycles of ESHAP (etoposide, 240 mg/m2, cisplatin, 100 mg/m2, methylprednisolone, 2000 mg and Ara-C 2000 mg/m2) every 3 weeks. Four to six doses of rituximab 375 mg/m2 were administered on day 1 of each cycle of induction therapy. High-dose therapy (BEAM) followed by autologous stem cell transplant (ASCT) was used as consolidation. Radiotherapy was given to residual masses or sites of bulky disease. Primary endpoint was progression-free survival (PFS), while secondary endpoints were overall survival (OS) and feasibility of the treatment. Results. From April 2002 to October 2006, 105 consecutive patients from 10 centers were recruited. 58% were men and 42% women with median age 46 years (19–63 years). 74% of patients had stage IV disease, 92% had elevated LDH, 53% had performance status &gt;1, 55% had B symptoms and 19% had bone marrow involvement. aaIPI was 2 in 62% of patients and 3 in 38% of patients. 68% of patients received the whole treatment according to the protocol, including ASCT and radiotherapy. Stem cells mobilization according to the protocol was performed in 90% of patients and was successful in 86% of mobilized patients (77% of all patients). 73% of patients ultimately received ASCT (including 3 patients transplanted after ammended treatment) and 51% of patients received planned radiotherapy. Complete remission (CR) was achieved in 83% of all patients and partial remission (PR) in 2%. Early toxic death rate was 6% and 9% patients had primary refractory disease. Of patients who achieved CR or PR, only 6 subsequently relapsed (7%) and two suffered late toxic death (2%). With a median follow-up of 32 months for living patients, the estimated 2-year PFS is 77% and 2-year OS is 81%. Age less than median (46 years) was strongest predictor of favorable outcome (p = 0,00006 for PFS and p = 0,00013 for OS), while there was no effect of stage, LDH, performance status or aaIPI (2-year PFS 79% for aaIPI 2 and 77% for aaIPI 3, 2-year OS 81% for aaIPI 2 and 80% for aaIPI 3). Delivery of ASCT or radiotherapy did not significantly affected PFS in patients who did not suffered early progression or early toxic death, but radiotherapy modestly improved OS of these patients (p = 0,03). Conclusion. R-MEB has proved to be an effective treatment strategy for younger patients with high-risk aggressive B-cell lymphoma. Currently, CLSG is testing whether utilization of early PET scan may decrease toxicity and improve treatment tolerance while maintaining the efficacy of this regimen.

The Immunohistochemical Pattern of Indoleamine 2,3-Dioxygenase in Tumor Tissue Indicates the Prognosis of Patients with Diffuse Large B-Cell Lymphoma.

Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 2924-2924 ◽  
Author(s):  
Soranobu Ninomiya ◽  
Nobuhiro Kanemura ◽  
Hisashi Tsurumi ◽  
Takeshi Hara ◽  
Naoe Goto ◽  
...  
Keyword(s):  
T Cell ◽  
B Cell ◽  
Poor Prognosis ◽  
Tumor Tissue ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Bulky Disease ◽  
Indoleamine 2,3 Dioxygenase ◽  
Large B Cell Lymphoma ◽  
Large B Cell

Abstract Abstract 2924 Poster Board II-900 Introduction : Indoleamine 2,3-dioxygenase (IDO) is an enzyme that degrades the essential amino acid tryptophan along the kynurenine pathway. Pro-inflammatory cytokines, such as IFN-g, induce IDO during the inflammatory response in many human cell types. The induction of IDO is synergistic in the presence of TNF-a, IL-1 or IL-6, and might be mediated by a signaling pathway from NF-κB and/or MAPKs. Furthermore, some metabolites derived from tryptophan by IDO, such as L-kynurenine, block antigen-driven specific T-cell proliferation and induce T-cell death. Thus, IDO activity might play an important role in regulation of the immune response exerted by antigen presenting cells and also provide transformed cells with a potent tool to help escape from assault by the immune system. Indeed, we have previously reported that high serum L-kynurenine level is associated with poor prognosis of diffuse large B-cell lymphoma (DLBCL) (ASH 2008 abstract 2812). Here, we investigated the IDO expression of patients with DLBCL. Patients and methods : The study protocol comprised a prospective, consecutive entry design that was approved by our Institutional Review Board. We investigated 119 patients between December 2003 and June 2008 who were histologically diagnosed with DLBCL according to the WHO classification. We performed immunohistochemical (IHC) analysis for IDO expression by mouse anti-human IDO monoclonal antibody. Patients aged <70 y received 8 cycles of either R-CHOP or R-THP-COP therapy. Each regimen consisted of rituximab (R: 375 mg/m2), cyclophosphamide (CPA: 750 mg/m2), doxorubicin (DOX) or tetrahydropyranyl-adriamycin (THP; 50 mg/m2), vincristine (VCR; 1.4 mg/m2, maximal dose 2.0 mg), and prednisolone (PSL; 100 mg daily). The R-THP-COP regimen included THP, an anthracycline derivative of DOX. Patients aged ≥70 y received 6 cycles of R-CHOP or R-THP-COP therapy. The chemotherapy cycles were repeated at 14-day intervals in patients aged <70 y, and at 21-day intervals in patients aged ≥70 y. Patients with bulky disease received radiotherapy ranging from 30 to 40 Gy. Responses to treatment were categorized as defined by Cheson et al. Results : The median age was 65.2 year (range, 24 - 88 y) and the median follow-up was 22.9 month (range, 0.60 – 55.4 mo). The IDO expression patterns were classified into 3 categories; diffuse positive, focal positive and negative patterns. The diffuse positive IDO expression in tumor tissue was found in 38 cases (32%). The focal positive and negative expression of IDO was 16 cases (13.4%) and 65 cases (54.6%), respectively. The diffuse IDO positive cells were lymphoma cells and the focal IDO positive cells were dendritic cells (DC) confirmed by IHC analysis. The CR rates of patients with diffuse positive IDO expression, focal positive and negative were 55.3%, 62.5% and 83.1%, respectively (P<0.05). The 3-year overall survival rates for patients with diffuse positive, focal positive and negative were 49.8%, 66.3% and 81.4%, respectively (p=0.001). IDO expression was not significantly associated with the classification of germinal center (GC) type nor non-GC type. Discussion : A poor prognosis of patients with positive IDO expression might suggest that local immunity in tumor tissue is depressed by increasing L-kynurenine levels. Hence, IDO expression contributes to refractory to chemotherapy for DLBCL. Interestingly, expression pattern of IDO was significantly related with response to the treatment and prognosis of DLBCL. In conclusion, IDO activity might play an important role in DLBCL and the cells which express IDO are important for the response to treatment and prognosis of this malignancy. IDO, therefore, might be a candidate of therapeutic targets for DLBCL patients who are resistance to chemotherapy. Disclosures: No relevant conflicts of interest to declare.

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