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Background: Cardiac involvement by light chain amyloidosis (AL) is generally associated with an unfavorable outcome. Bortezomib-based induction, and high-dose melphalan followed by autologous hematopoietic stem cell transplantation (auto-HCT) in eligible patients is associated with best long-term outcomes. We report the outcome of cardiac AL patients who underwent auto-HCT at our institution. Methods: We retrospectively reviewed all patients with cardiac AL who received auto-HCT between January 1997 and December 2018 at our institution. Hematologic and cardiac organ responses were evaluated according to the Consensus Guidelines for AL (R Comenzo et al. Leukemia 2012). Revised Mayo staging system was used for cardiac staging (S Kumar et al. JCO 2012). Progression free survival (PFS) and overall survival (OS) were calculated from the date of transplant. Survival was estimated using Kaplan Meier method and compared using log rank test. Cox proportional hazard models were used for adjusted survival analysis. Results: 57 patients were identified and baseline characteristics summarized in Table 1. Thirty eight patients (67%) at diagnosis and 17 (30%) at auto-HCT were evaluable by the revised Mayo staging system. Eleven (19%), 14 (25%), 17 (30%), and 13 (23%) patients had stage 1, 2, 3 and 4 disease, respectively, while the stage was unknown in 2 (3%) patients. Twenty-four (42%) patients received induction with a combination of cyclophosphamide, bortezomib, and dexamethasone (CyBorD), 14 (25%) received bortezomib and dexamethasone, and 2 (3%) received other bortezomib-based induction (Table 1). Based on hematologic response criteria, 3 (5%), 15 (27%) and 22 (39%) patients achieved complete response (CR), a very good partial response (VGPR), or partial response (PR) to induction, with an overall response rate (ORR) of 71%. All patients underwent peripheral blood stem cell (PBSC) mobilization with filgrastim, with or without plerixafor. Thirty-nine (68%) patients received melphalan 200mg/m2 and 18 (32%) received melphalan 140mg/m2 as preparative regimen. Nineteen patients (33%) received maintenance therapy post auto-HCT. One-hundred day and 1-year post auto-HCT non-relapse mortality rate was 5% (3 patients). Best post auto-HCT hematologic ORR was 92%, with 19 (34%), 20 (35%), and 13 (23%) patients achieving CR, VGPR and PR, respectively. Based on the consensus guidelines for cardiac response in AL using NT-proBNP or NYHA class, 51 patients (89%) had a cardiac organ response at their last evaluation (Table 2). Median follow up in surviving patients was 32.9 months (range 5.1 - 140.6). The 3-year PFS was 53.5% [95% CI 38.6-68.4%], and 3-year OS was 67.8% [53.9-81.7%]. On univariate analysis, melphalan 200 vs. 140 (p=0.017, HR 0.387 95%CI 0.178- 0.844) was associated with a better PFS, but none of the variables had an impact on PFS or OS on a multivariate Cox regression analysis, perhaps due to a small sample size. Conclusion: In this retrospective analysis we showed that in transplant-eligible patients with advanced cardiac AL, high-dose melphalan and auto-HCT is associated with a low (5%) NRM, an organ response rate of almost 90%, and a 3-year OS of almost 70%. Disclosures Bashir: Takeda: Other: Advisory Board, Research Funding; Acrotech: Research Funding; Celgene: Research Funding; StemLine: Research Funding; KITE: Other: Advisory Board; Purdue: Other: Advisory Board; Amgen: Other: Advisory Board. Nieto:Secura Bio: Other: Grant Support; Astra Zeneca: Other: Grant Support; Novartis: Other: Grant Support; Affimed: Consultancy, Other: Grant Support. Hosing:NKARTA Inc.: Consultancy. Popat:Bayer: Research Funding; Novartis: Research Funding. Lee:Takeda: Consultancy, Research Funding; Amgen: Consultancy, Research Funding; GlaxoSmithKline: Consultancy, Research Funding; Janssen: Consultancy, Research Funding; Celgene: Consultancy, Research Funding; Genentech: Consultancy; Genentech: Consultancy; Daiichi Sankyo: Research Funding; Sanofi: Consultancy; Regeneron: Research Funding. Patel:Takeda: Consultancy, Research Funding; Precision Biosciences: Research Funding; Oncopeptides: Consultancy; Poseida: Research Funding; Janssen: Consultancy, Research Funding; Nektar: Consultancy, Research Funding; Cellectis: Research Funding; Celgene: Consultancy, Research Funding; Bristol Myers Squibb: Consultancy, Research Funding. Manasanch:Merck: Research Funding; Sanofi: Honoraria; GSK: Honoraria; Takeda: Honoraria; Quest Diagnostics: Research Funding; Adaptive Biotechnologies: Honoraria; JW Pharma: Research Funding; Novartis: Research Funding; BMS: Honoraria; Sanofi: Research Funding. Thomas:X4 Pharma: Research Funding; Ascentage: Membership on an entity's Board of Directors or advisory committees, Research Funding; BMS: Research Funding; Genentech: Research Funding; Xencor: Research Funding; Pharmacyclics: Other: Advisory Boards. Kaufman:Karyopharm: Honoraria; Janssen: Research Funding; Bristol Myers Squibb: Research Funding. Orlowski:Sanofi-Aventis, Servier, Takeda Pharmaceuticals North America, Inc.: Honoraria, Membership on an entity's Board of Directors or advisory committees; Laboratory research funding from BioTheryX, and clinical research funding from CARsgen Therapeutics, Celgene, Exelixis, Janssen Biotech, Sanofi-Aventis, Takeda Pharmaceuticals North America, Inc.: Research Funding; Amgen, Inc., AstraZeneca, BMS, Celgene, EcoR1 Capital LLC, Forma Therapeutics, Genzyme, GSK Biologicals, Ionis Pharmaceuticals, Inc., Janssen Biotech, Juno Therapeutics, Kite Pharma, Legend Biotech USA, Molecular Partners, Regeneron Pharmaceuticals, Inc.,: Honoraria, Membership on an entity's Board of Directors or advisory committees; STATinMED Research: Consultancy; Founder of Asylia Therapeutics, Inc., with associated patents and an equity interest, though this technology does not bear on the current submission.: Current equity holder in private company, Patents & Royalties. Champlin:Takeda: Patents & Royalties; Genzyme: Speakers Bureau; DKMS America: Membership on an entity's Board of Directors or advisory committees; Cytonus: Consultancy; Omeros: Consultancy; Johnson and Johnson: Consultancy; Actinium: Consultancy. Qazilbash:Bioclinica: Consultancy; Amgen: Research Funding; Angiocrine: Research Funding; Bioline: Research Funding; Janssen: Research Funding.

Background: Peripheral blood hematopoietic stem cell mobilization for autologous hematopoietic stem cell transplantation (auto-HSCT) in multiple myeloma (MM) can be achieved with either growth factors (GF) alone (filgrastim +/- plerixafor), or with chemotherapy (GF + chemo). When utilized, the chemotherapy regimens include single-agent cyclophosphamide (Cy), or combination regimens, including cyclophosphamide, vincristine or bortezomib, doxorubicin, dexamethasone (CVAD/CBAD) at our center. The optimal mobilization strategy, however, has yet to be established. Methods: In this single center retrospective analysis, we identified 1,006 patients who received auto-HCT for MM between 2009 and 2015. This time-period was chosen to include patients who received auto-HCT after the availability of plerixafor. Patients were divided into 4 groups: G (filgrastim alone), G+P (filgrastim + plerixafor), Cy, and CVAD/CBAD. Plerixafor was mainly used "just-in-time", and not as planned therapy in accordance with our Departmental guidelines. Primary endpoints were CD34+ cell dose/kg collected, days to collect the target CD34+ cell dose, time to neutrophil engraftment (first of three consecutive days of peripheral blood neutrophil count of >500 x 106/L), packed red blood cell (PBRC) and platelet transfusion requirement, duration of hospitalization, progression-free survival (PFS), and overall survival (OS). Results: Patient characteristics are summarized in Table 1. There were 654 patients mobilized with G, 203 with G + P, 80 with Cy, and 69 with CVAD/CBAD. Patients mobilized with CVAD/CBAD were younger compared to the other three groups, were less likely to have achieved VGPR to induction, and more likely to have received a more intense preparative regimen (Table 1). Patients who received G alone, G+P, Cy, and CVAD/CBAD collected a median of 4.1 (0.7-12.2), 4.0 (1.8-11.1), 5.2 (2.2-19.2), and 5.6 (2.5-26.6) x106 CD34+ cells/kg [p Conclusion: Approximately 85% of MM patients underwent PBSC mobilization with GF only (G or G+P). GF + chemo (Cy, CVAD/CBAD) was primarily used in patients with suboptimal response to induction, and allowed successful PBSC collection in this high-risk group. GF + chemo-based mobilization was associated with a higher CD34+ cell dose collection, without improving the time to neutrophil or platelet engraftment, PRBC or platelet transfusion requirement, or the duration of hospitalization. Disclosures Bashir: Purdue: Other: Advisory Board; StemLine: Research Funding; Acrotech: Research Funding; Takeda: Other: Advisory Board, Research Funding; Celgene: Research Funding; Amgen: Other: Advisory Board; KITE: Other: Advisory Board. Nieto:Secura Bio: Other: Grant Support; Astra Zeneca: Other: Grant Support; Novartis: Other: Grant Support; Affimed: Consultancy, Other: Grant Support. Hosing:NKARTA Inc.: Consultancy. Popat:Bayer: Research Funding; Novartis: Research Funding. Lee:Sanofi: Consultancy; GlaxoSmithKline: Consultancy, Research Funding; Genentech: Consultancy; Amgen: Consultancy, Research Funding; Celgene: Consultancy, Research Funding; Genentech: Consultancy; Regeneron: Research Funding; Daiichi Sankyo: Research Funding; Takeda: Consultancy, Research Funding; Janssen: Consultancy, Research Funding. Patel:Bristol Myers Squibb: Consultancy, Research Funding; Oncopeptides: Consultancy; Poseida: Research Funding; Janssen: Consultancy, Research Funding; Celgene: Consultancy, Research Funding; Cellectis: Research Funding; Precision Biosciences: Research Funding; Takeda: Consultancy, Research Funding; Nektar: Consultancy, Research Funding. Manasanch:Merck: Research Funding; Novartis: Research Funding; Quest Diagnostics: Research Funding; Adaptive Biotechnologies: Honoraria; GSK: Honoraria; Sanofi: Honoraria; BMS: Honoraria; Takeda: Honoraria; JW Pharma: Research Funding; Sanofi: Research Funding. Thomas:BMS: Research Funding; Ascentage: Membership on an entity's Board of Directors or advisory committees, Research Funding; X4 Pharma: Research Funding; Xencor: Research Funding; Pharmacyclics: Other: Advisory Boards; Genentech: Research Funding. Kaufman:Karyopharm: Honoraria; Bristol Myers Squibb: Research Funding; Janssen: Research Funding. Orlowski:Amgen, Inc., AstraZeneca, BMS, Celgene, EcoR1 Capital LLC, Forma Therapeutics, Genzyme, GSK Biologicals, Ionis Pharmaceuticals, Inc., Janssen Biotech, Juno Therapeutics, Kite Pharma, Legend Biotech USA, Molecular Partners, Regeneron Pharmaceuticals, Inc.,: Honoraria, Membership on an entity's Board of Directors or advisory committees; Laboratory research funding from BioTheryX, and clinical research funding from CARsgen Therapeutics, Celgene, Exelixis, Janssen Biotech, Sanofi-Aventis, Takeda Pharmaceuticals North America, Inc.: Research Funding; Founder of Asylia Therapeutics, Inc., with associated patents and an equity interest, though this technology does not bear on the current submission.: Current equity holder in private company, Patents & Royalties; Sanofi-Aventis, Servier, Takeda Pharmaceuticals North America, Inc.: Honoraria, Membership on an entity's Board of Directors or advisory committees; STATinMED Research: Consultancy. Champlin:Actinium: Consultancy; Johnson and Johnson: Consultancy; Omeros: Consultancy; Cytonus: Consultancy; DKMS America: Membership on an entity's Board of Directors or advisory committees; Genzyme: Speakers Bureau; Takeda: Patents & Royalties. Qazilbash:Bioclinica: Consultancy; Amgen: Research Funding; Janssen: Research Funding; Angiocrine: Research Funding; Bioline: Research Funding.

Background: Risk stratification for Immunoglobulin light chain amyloidosis (AL) has been refined with advances in the understanding of disease biology. Although nonspecific, beta 2 microglobulin (β2M) levels correlate with disease burden and are considered a prognostic marker in several hematologic malignancies. Recently, we and others have shown the association of β2M levels with survival in AL. In this study, we evaluated the role of β2M as a predictor of outcome for high-dose chemotherapy and autologous hematopoietic stem cell transplantation (auto-HCT) in patients with AL. Methods: We identified 175 consecutive patients with AL who received auto-HCT between 2009 and 2019 at our institution. A β2M≥3.5 mg/L, regardless of renal function status was used as a cutoff value. Hematologic and organ responses were evaluated according to the Consensus Guidelines for AL. Revised Mayo staging system was utilized for Cardiac staging. Results: The median age at auto-HCT was 60 years (range, 27 to 77). Of 175 patients, 153 (87%) had a β2M value available, of whom 57 (37%) had a β2M ≥ 3.5 mg/L. There were no significant differences in baseline characteristics between the 2 groups, except for the higher level of LDH, worse renal function, and more patients with renal involvement in the β2M ≥ 3.5 group, and more patients with lambda light chain type in the β2M The 3-year progression-free survival (PFS) was 66%, and 74% in patients with β2M≥3.5, and β2M Conclusion: In this single-center retrospective analysis, we showed that high serum β2M is associated with shorter OS. β2M may be incorporated as a prognostic marker for AL if these findings are confirmed in larger studies. Disclosures Bashir: Acrotech: Research Funding; StemLine: Research Funding; Celgene: Research Funding; Takeda: Other: Advisory Board, Research Funding; KITE: Other: Advisory Board; Amgen: Other: Advisory Board; Purdue: Other: Advisory Board. Hosing:NKARTA Inc.: Consultancy. Popat:Bayer: Research Funding; Novartis: Research Funding. Kebriaei:Novartis: Other: Served on advisory board; Jazz: Consultancy; Ziopharm: Other: Research Support; Kite: Other: Served on advisory board; Pfizer: Other: Served on advisory board; Amgen: Other: Research Support. Shpall:Takeda: Other: Licensing Agreement; Magenta: Membership on an entity's Board of Directors or advisory committees; Novartis: Membership on an entity's Board of Directors or advisory committees; Celgene: Membership on an entity's Board of Directors or advisory committees; Adaptimmune: Membership on an entity's Board of Directors or advisory committees; Zelluna: Membership on an entity's Board of Directors or advisory committees. Manasanch:Sanofi: Research Funding; Adaptive Biotechnologies: Honoraria; GSK: Honoraria; Sanofi: Honoraria; BMS: Honoraria; Takeda: Honoraria; Quest Diagnostics: Research Funding; Merck: Research Funding; JW Pharma: Research Funding; Novartis: Research Funding. Lee:Amgen: Consultancy, Research Funding; Celgene: Consultancy, Research Funding; Daiichi Sankyo: Research Funding; Regeneron: Research Funding; Genentech: Consultancy; Janssen: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; Sanofi: Consultancy; GlaxoSmithKline: Consultancy, Research Funding; Genentech: Consultancy. Kaufman:Janssen: Research Funding; Karyopharm: Honoraria; Bristol Myers Squibb: Research Funding. Patel:Cellectis: Research Funding; Nektar: Consultancy, Research Funding; Janssen: Consultancy, Research Funding; Bristol Myers Squibb: Consultancy, Research Funding; Celgene: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; Precision Biosciences: Research Funding; Oncopeptides: Consultancy; Poseida: Research Funding. Thomas:BMS: Research Funding; Ascentage: Membership on an entity's Board of Directors or advisory committees, Research Funding; X4 Pharma: Research Funding; Genentech: Research Funding; Xencor: Research Funding; Pharmacyclics: Other: Advisory Boards. Orlowski:STATinMED Research: Consultancy; Founder of Asylia Therapeutics, Inc., with associated patents and an equity interest, though this technology does not bear on the current submission.: Current equity holder in private company, Patents & Royalties; Sanofi-Aventis, Servier, Takeda Pharmaceuticals North America, Inc.: Honoraria, Membership on an entity's Board of Directors or advisory committees; Amgen, Inc., AstraZeneca, BMS, Celgene, EcoR1 Capital LLC, Forma Therapeutics, Genzyme, GSK Biologicals, Ionis Pharmaceuticals, Inc., Janssen Biotech, Juno Therapeutics, Kite Pharma, Legend Biotech USA, Molecular Partners, Regeneron Pharmaceuticals, Inc.,: Honoraria, Membership on an entity's Board of Directors or advisory committees; Laboratory research funding from BioTheryX, and clinical research funding from CARsgen Therapeutics, Celgene, Exelixis, Janssen Biotech, Sanofi-Aventis, Takeda Pharmaceuticals North America, Inc.: Research Funding. Champlin:Genzyme: Speakers Bureau; Johnson and Johnson: Consultancy; Actinium: Consultancy; Cytonus: Consultancy; Omeros: Consultancy; DKMS America: Membership on an entity's Board of Directors or advisory committees; Takeda: Patents & Royalties. Qazilbash:Angiocrine: Research Funding; Bioline: Research Funding; Amgen: Research Funding; Bioclinica: Consultancy; Janssen: Research Funding.

Background: Recent clinical trials have shown a steady improvement in the outcomes of patients with multiple myeloma (MM), especially in those who have received induction with bortezomib, lenalidomide, and dexamethasone (VRD), followed by autologous hematopoietic cell transplantation (Auto-HCT) and lenalidomide maintenance (Attal et al. 2017, Joseph et al. 2020). Here, we report our center's outcomes of MM patients who received VRD induction, followed by Auto-HCT and maintenance therapy incorporating lenalidomide. Methods: In this single-center retrospective analysis, eligible patients received an auto-HCT between June 2007 and November 2015. We excluded patients who received induction regimens other than VRD or did not receive lenalidomide-based maintenance therapy. Primary endpoints were progression-free survival (PFS) and overall survival (OS), which were estimated by using the Kaplan-Meier method. We performed multivariate Cox regression analysis to evaluate the impact of several important variables, including age, sex, race, immunoglobulin subtype, light chain, ISS, cytogenetic risk, conditioning regimen, post-transplant therapy, and best final response, on PFS and OS. Results: We identified 303 patients who fulfilled the eligibility criteria for this study. Table 1 and 2 summarize patient demographics, disease characteristics, therapies and responses. Sixty-two patients (20.5%) had high risk cytogenetics defined as del17p, t(4;14), t(14;16), and 1q21 gain. 132 (43.6%), 72 (23.8%), and 55 (18.2%) patients had ISS stages I, II, and III, respectively. Overall response rate (ORR) at time of Auto-HCT was 93.4% (sCR 7.6%, CR 4%, VGPR 41.3%, and PR 40.6 %). Importantly, ORR after auto-HCT and maintenance therapy was 99.7% (sCR 40.3%, CR 12.5%, VGPR 33.7%, and PR 13.2%). With a median follow up of 45 months (range: 11 - 113 months), the median PFS was 62 months (95% confidence interval (CI) 48- 76 months) and 4-year PFS was 58% (Fig 1). Median OS has not been reached and 4-year OS was 88% (Fig 1). Patients with high-risk cytogenetics had median PFS and OS of 31 months (95% CI 25- 37 months) and 76 months (95% CI 44-108 months), respectively. In contrast, in patients with standard-risk cytogenetics, the median PFS and OS were 73 months (95% CI 62- 84 months) and not reached, respectively (PVGPR (P Conclusions: These results provide further evidence that VRD induction followed by Auto-HCT and lenalidomide-based maintenance is associated with excellent outcomes in MM, especially in patients with standard-risk cytogenetics. Disclosures Bashir: KITE: Other: Advisory Board; Celgene: Research Funding; StemLine: Research Funding; Amgen: Other: Advisory Board; Purdue: Other: Advisory Board; Takeda: Other: Advisory Board, Research Funding; Acrotech: Research Funding. Nieto:Novartis: Other: Grant Support; Astra Zeneca: Other: Grant Support; Affimed: Consultancy, Other: Grant Support; Secura Bio: Other: Grant Support. Lee:Daiichi Sankyo: Research Funding; Sanofi: Consultancy; GlaxoSmithKline: Consultancy, Research Funding; Genentech: Consultancy; Takeda: Consultancy, Research Funding; Janssen: Consultancy, Research Funding; Celgene: Consultancy, Research Funding; Regeneron: Research Funding; Genentech: Consultancy; Amgen: Consultancy, Research Funding. Patel:Celgene: Consultancy, Research Funding; Nektar: Consultancy, Research Funding; Cellectis: Research Funding; Bristol Myers Squibb: Consultancy, Research Funding; Precision Biosciences: Research Funding; Takeda: Consultancy, Research Funding; Janssen: Consultancy, Research Funding; Oncopeptides: Consultancy; Poseida: Research Funding. Kebriaei:Amgen: Other: Research Support; Kite: Other: Served on advisory board; Novartis: Other: Served on advisory board; Jazz: Consultancy; Pfizer: Other: Served on advisory board; Ziopharm: Other: Research Support. Thomas:Pharmacyclics: Other: Advisory Boards; X4 Pharma: Research Funding; Ascentage: Membership on an entity's Board of Directors or advisory committees, Research Funding; Genentech: Research Funding; Xencor: Research Funding; BMS: Research Funding. Orlowski:Sanofi-Aventis, Servier, Takeda Pharmaceuticals North America, Inc.: Honoraria, Membership on an entity's Board of Directors or advisory committees; Founder of Asylia Therapeutics, Inc., with associated patents and an equity interest, though this technology does not bear on the current submission.: Current equity holder in private company, Patents & Royalties; STATinMED Research: Consultancy; Laboratory research funding from BioTheryX, and clinical research funding from CARsgen Therapeutics, Celgene, Exelixis, Janssen Biotech, Sanofi-Aventis, Takeda Pharmaceuticals North America, Inc.: Research Funding; Amgen, Inc., AstraZeneca, BMS, Celgene, EcoR1 Capital LLC, Forma Therapeutics, Genzyme, GSK Biologicals, Ionis Pharmaceuticals, Inc., Janssen Biotech, Juno Therapeutics, Kite Pharma, Legend Biotech USA, Molecular Partners, Regeneron Pharmaceuticals, Inc.,: Honoraria, Membership on an entity's Board of Directors or advisory committees. Champlin:Takeda: Patents & Royalties; Genzyme: Speakers Bureau; DKMS America: Membership on an entity's Board of Directors or advisory committees; Cytonus: Consultancy; Actinium: Consultancy; Johnson and Johnson: Consultancy; Omeros: Consultancy. Qazilbash:Bioline: Research Funding; Janssen: Research Funding; Amgen: Research Funding; Bioclinica: Consultancy; Angiocrine: Research Funding.

Background- In patients with light chain amyloidosis (AL), t(11;14) detected by fluorescence in situ hybridization (FISH) is the most common cytogenetic aberration. Several studies have shown that t(11;14) is associated with inferior outcomes in newly diagnosed AL patients [1, 2]. In contrast, at least one study in patients with t(11;14) who underwent high-dose therapy and autologous hematopoietic stem cell transplantation (auto-HCT) showed improved complete response (CR) rate and prolonged hematologic event-free survival[3]. In this single-center, retrospective analysis, we evaluated the outcome of patients with AL and t(11;14) who underwent auto-HCT at our institution. Method- We identified 122 consecutive patients with AL with cardiac or renal involvement who received an auto-HCT between 2011 and 2019. Baseline FISH data were available for 92 patients, 15 (16 %) of whom had t(11;14). Seventy-seven (84%) patients without t(11;14) were included as control . Hematologic and organ responses were evaluated according to the Consensus Guidelines for AL [4]. Revised Mayo staging system was utilized for Cardiac staging [5]. Result- The median age at auto-HCT was 60 years (range, 27 to 77). There were no significant differences in baseline characteristics between the two groups (Table 1). The median follow-up from auto-HCT was 28 months (range, 1 to 100). Overall, 40%, and 42% of patients with or without t(11;14), respectively (p=0.573), received post-auto-HCT maintenance therapy. One-year non-relapse mortality (NRM) was 2%. The 1-year NRM was 0 and 2.6% (n=2) in patients with or without t(11;14) (p=0.366). Hematologic CR after auto-HCT was seen in 7 (47%) and 33 (42%) patients with or without t(11;14), respectively (p=0.78). Organ response (OR) after auto-HCT was seen in 10 (71%) and 50 (67%) patients with or without t(11;14), respectively (p=0.586). The 2-year hematologic disease-free survival (Heme DFS) was 93% and 87% with or without t(11;14), respectively (p=0.422). The 2-year progression-free survival (PFS) was 92%, and 87% in patients with or without t(11;14) (p=0.6) (Figure 1A).The 2-year overall survival was 100%, ad 87% in patients with or without t(11;14) (p=0.2) (Figure 1B). Cardiac involvement with AL was associated with a shorter OS (p=0.012). Conclusion- In this single-center retrospective analysis, we showed that auto-HCT is safe and feasible in selected patients with AL and t(11;14), and these patients have comparable outcomes to patients without t(11;14). Disclosures Bashir: Celgene: Research Funding; StemLine: Research Funding; Acrotech: Research Funding; Takeda: Other: Advisory Board, Research Funding; KITE: Other: Advisory Board; Purdue: Other: Advisory Board; Amgen: Other: Advisory Board. Hosing:NKARTA Inc.: Consultancy. Popat:Bayer: Research Funding; Novartis: Research Funding. Kebriaei:Amgen: Other: Research Support; Pfizer: Other: Served on advisory board; Kite: Other: Served on advisory board; Novartis: Other: Served on advisory board; Ziopharm: Other: Research Support; Jazz: Consultancy. Shpall:Takeda: Other: Licensing Agreement; Magenta: Membership on an entity's Board of Directors or advisory committees; Novartis: Membership on an entity's Board of Directors or advisory committees; Celgene: Membership on an entity's Board of Directors or advisory committees; Adaptimmune: Membership on an entity's Board of Directors or advisory committees; Zelluna: Membership on an entity's Board of Directors or advisory committees. Manasanch:Adaptive Biotechnologies: Honoraria; Sanofi: Research Funding; Novartis: Research Funding; JW Pharma: Research Funding; Merck: Research Funding; Quest Diagnostics: Research Funding; Takeda: Honoraria; BMS: Honoraria; Sanofi: Honoraria; GSK: Honoraria. Lee:Amgen: Consultancy, Research Funding; Celgene: Consultancy, Research Funding; Janssen: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; Genentech: Consultancy; GlaxoSmithKline: Consultancy, Research Funding; Sanofi: Consultancy; Daiichi Sankyo: Research Funding; Regeneron: Research Funding; Genentech: Consultancy. Kaufman:Janssen: Research Funding; Karyopharm: Honoraria; Bristol Myers Squibb: Research Funding. Patel:Oncopeptides: Consultancy; Celgene: Consultancy, Research Funding; Cellectis: Research Funding; Janssen: Consultancy, Research Funding; Nektar: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; Precision Biosciences: Research Funding; Poseida: Research Funding; Bristol Myers Squibb: Consultancy, Research Funding. Thomas:Ascentage: Membership on an entity's Board of Directors or advisory committees, Research Funding; X4 Pharma: Research Funding; Xencor: Research Funding; Pharmacyclics: Other: Advisory Boards; Genentech: Research Funding; BMS: Research Funding. Orlowski:STATinMED Research: Consultancy; Founder of Asylia Therapeutics, Inc., with associated patents and an equity interest, though this technology does not bear on the current submission.: Current equity holder in private company, Patents & Royalties; Sanofi-Aventis, Servier, Takeda Pharmaceuticals North America, Inc.: Honoraria, Membership on an entity's Board of Directors or advisory committees; Amgen, Inc., AstraZeneca, BMS, Celgene, EcoR1 Capital LLC, Forma Therapeutics, Genzyme, GSK Biologicals, Ionis Pharmaceuticals, Inc., Janssen Biotech, Juno Therapeutics, Kite Pharma, Legend Biotech USA, Molecular Partners, Regeneron Pharmaceuticals, Inc.,: Honoraria, Membership on an entity's Board of Directors or advisory committees; Laboratory research funding from BioTheryX, and clinical research funding from CARsgen Therapeutics, Celgene, Exelixis, Janssen Biotech, Sanofi-Aventis, Takeda Pharmaceuticals North America, Inc.: Research Funding. Champlin:Actinium: Consultancy; Omeros: Consultancy; Takeda: Patents & Royalties; Cytonus: Consultancy; DKMS America: Membership on an entity's Board of Directors or advisory committees; Genzyme: Speakers Bureau; Johnson and Johnson: Consultancy. Qazilbash:Janssen: Research Funding; Bioline: Research Funding; Angiocrine: Research Funding; Amgen: Research Funding; Bioclinica: Consultancy.