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19 citation(s) found for "Walker, Brian A".

Cyclin D1 beyond the cell cycle: A new role in t(11;14) multiple myeloma
Yan, Huihuang, Shivaram, Suganti, Tang, Hongwei , Notch, Samuel, Hans, Anderson, Tian, Shulan , Howe, Michael J. A., Zepeda, Cinthya Mendoza, Bergsagel, P. Leif , Kumar, Shaji, Rico, Daniel , Mikulášová, Aneta , Tang, Hongwei, Lehman, Stacey L. , Howe, Michael, Bolarinwa, Abiola , Kaddoura, Marcella , Fonseca, Rafaël , Bergsagel, P. Leif , Braggio, Esteban , Gonsalves, Wilson I. , Rajkumar, S. Vincent , Kumar, Shaji , Maura, Francesco , WALKER, BRIAN J. , Baughn, Linda B.

Blood | December 4, 2025 | Volume: 146 | Issue: Supplement 1 | Pages: 3939-3939

10.1182/blood-2025-3939 Get It

Abstract Cyclin D1, encoded by CCND1, is a cell cycle regulator, overexpressed in ~15% of multiple myeloma (MM) cases via CCND1::IGH super-enhancer juxtaposition through t(11;14). Cyclin D1 also plays a non-canonical role in transcriptional regulation, but in t(11;14) MM its function in gene regulation remains undefined. We investigated the global transcriptional and epigenomic consequences of CCND1overexpression in t(11;14) MM. To define a CCND1 signature, RNA-seq from two independent primary MM patient cohorts, CoMMpass and Mayo, was utilized to compare high CCND1 t(11;14) cases (≥300 transcripts-per-million [TPM], n=271) vs. low CCND1 hyperdiploid cases (<30 TPM, n=233). Two CCND1 knockout (KO) clones in t(11;14) MM U266B1 were also generated by CRISPR/Cas9, introducing a frameshift insertion (A) after chr11:69641478 (hg38) in exon 1. ATAC-seq and ChIP-seq (H3K4me3, H3K4me1, and H3K27ac) were performed in duplicates, and RNA-seq in triplicates in U266B1 wild-type (WT) and KO. Libraries were sequenced on Illumina NextSeq 2000 (2x51 bp for ChIP/ATAC, 2x150 bp for RNA-seq). Reads were mapped to hg38 by BWA (ChIP/ATAC) or STAR (RNA-seq), peaks called by MACS2 (FDR< 0.01), peak and gene raw counts estimated by featureCounts. Differential peaks (fold-change ≥1.5) and differentially expressed genes (fold-change ≥2) were identified by edgeR (FDR<0.05), including peaks detected in ≥2 samples and genes with TPM ≥0.1 in ≥1 sample. Interactions between promoters and distal regulatory regions were identified using publicly available chromatin interaction data in blood cell types. Pathway analysis was performed using Enrichr. Co-immunoprecipitation was performed in t(11;14) KMS12BM cells. Differential analysis comparing CCND1-high t(11;14) and CCND1-low MM cases in the two patient cohorts identified 21 upregulated and 21 downregulated genes associated with CCND1 expression which were also captured in the wild-typevs. CCND1 KO U266 cells. Enriched pathways (p<0.05) included Notch signaling, early/late estrogen response, epithelial-mesenchymal transition and reduced mitotic spindle and myogenesis. Dysregulated genes included those related to apoptosis, ubiquitin-proteosome, extracellular matrix, adhesion, and immune response, demonstrating a broader role for cyclin D1 in MM beyond cell cycle control. To explore the epigenomic basis of this transcriptional regulation, for each of the 42 differentially expressed genes we examined the changes of histone marks and chromatin accessibility in promoter and the interacting distal regulatory regions in the U266 KO model. Ten of the 21 genes upregulated in CCND1-high (downloaded in KO; e.g., argininosuccinate synthase 1 [ASS1], PMAIP1, MYEOV, CCR7, and DTX1) and 12 of the 21 genes downregulated in CCND1-high (upregulated in KO; e.g., UACA, RASAL2, PTPRZ1, PPT2, and IL23R) showed concordant changes in histone marks and/or chromatin accessibility, predominantly in distal regulatory regions, suggesting a chromatin-mediated mechanism of gene regulation by cyclin D1. The most prominent changes involved H3K27ac, a mark defining active enhancers. As H3K27ac is deposited by histone acetyltransferases CBP, we tested for the possible cyclin D1-CBP interaction. Co-IP confirmed this interaction, suggesting a role for this complex in chromatin remodeling and transcriptional control in t(11;14) MM. One gene notably upregulated in association with CCND1 is ASS1, which encodes a urea cycle enzyme responsible for endogenous arginine synthesis. Metabolomic studies demonstrated KO cells had elevated aspartate and citrulline and lowered arginine and ornithine compared to WT cells (p<0.01) demonstrating impaired urea cycle function. Further, KO cells displayed significantly reduced ASS1 protein expression, cell growth and S-phase entry compared to WT cells in arginine-replete conditions, with both WT and KO cell types further inhibited by arginine depletion (p<0.05). Together, a cyclin D1-associated gene signature was identified supporting its role in t(11;14) MM beyond the CDK4/6 mediated cell cycle control, including a role in metabolic plasticity and survival under arginine depleted conditions. These findings highlight cyclin D1 as a therapeutic vulnerability and open new avenues for personalized treatment strategies.
International Myeloma Society/International Myeloma Working Group Consensus Recommendations on the Definition of High-Risk Multiple Myeloma
Avet‐Loiseau, Hervé , Davies, Faith E. , Samur, Mehmet , Corre, Jill , D’Agostino, Mattia , Kaiser, Martin , Raab, Marc S. , Weinhold, Niels , Gutiérrez, Norma C. , Paiva, Bruno , Walker, Brian A. , Bustoros, Mark , Stewart, A. Keith , Hillengaß, Jens , Martínez‐López, Joaquín , Sperling, Adam S. , Dhodapkar, Madhav V. , Spencer, Andrew , Parekh, Samir , Sonneveld, Pieter , Bergsagel, P. Leif , Orlowski, Robert Z. , Mateos, María‐Victoria , Kumar, Shaji , Munshi, Nikhil C. , Martinez-Lopez, Joaquin , Bergsagel, P. Leif , Samur, Mehmet K , Kaiser, Martin F , Weisel, Katja C , Maura, Francesco , Walker, Brian A , Bustoros, Mark , Stewart, A Keith , Usmani, Saad , Hillengass, Jens , Chng, Wee Joo , Keats, Jonathan J , Martinez-Lopez, Joaquin , Sperling, Adam S , Touzeau, Cyrille , Zhan, Fenghuang , Raje, Noopur S , Bolli, Niccolo' , Ghobrial, Irene M , Dhodapkar, Madhav V , Jagannath, Sundar , Spencer, Andrew , Parekh, Samir , Bahlis, Nizar Jacques , Sonneveld, Pieter , Orlowski, Robert Z. , Mateos, María-Victoria , San-Miguel, Jesus , Anderson, Kenneth C , Moreau, Philippe , Kumar, Shaji K , Munshi, Nikhil C , Raab, Marc S , Martinez-Lopez, Joaquin , Paiva, Bruno , Davies, Faith E , Corre, Jill , Mattia, D'Agostino , Neri, Paola , Maura, Francesco , Usmani, Saad Z. , Chng, Wee Joo , Keats, Jonathan J. , Touzeau, Cyrille , Zhan, Fenghuang , Raje, Noopur , Cavo, Michèle , Bolli, Niccolò , Ghobrial, Irene M. , Jagannath, Sundar , Lonial, Sagar , Morgan, Gareth J. , Rajkumar, S. Vincent , Miguel, Jesús F. San , Anderson, Kenneth C. , Moreau, Philippe , Prósper, Felipe

Journal of Clinical Oncology | June 9, 2025 | Volume: 43 | Issue: 24 | Pages: 2739-2751

10.1200/jco-24-01893 | PMID 40489728 Get It

Despite significant improvements in survival of patients with multiple myeloma (MM), outcomes remain heterogeneous, and a significant proportion of patients experience suboptimal outcomes. Importantly, traditional prognostic factors based on data from patients treated with older therapies no longer capture prognosis accurately in the contemporary era of novel triplet or quadruplet therapies. Therefore, risk stratification requires refinement in the context of available and investigational treatment options in routine practice and clinical trials, respectively. The current identification of high-risk MM (HRMM) in routine practice is based on the Revised International Staging System, which stratifies patients using a combination of widely available serum biomarkers and chromosomal abnormalities assessed via fluorescence in situ hybridization. In recent years, a substantial body of evidence concerning additional clinical, biological, and molecular/genomic prognostic factors has accumulated, along with new MM risk stratification tools and consensus reports. The International Myeloma Society, along with the International Myeloma Working Group, convened an Expert Panel with the primary aim of revisiting the definition of HRMM and formulating a practical and data-driven consensus definition, based on new evidence from molecular/genomic assays, updated clinical data, and contemporary risk stratification concepts. The Panel proposes the following Consensus Genomic Staging (CGS) of HRMM which relies upon the presence of at least one of these abnormalities: (1) del(17p), with a cutoff of >20% clonal fraction, and/or TP53 mutation; (2) an IgH translocation including t(4;14), t(14;16), or t(14;20) along with 1q+ and/or del(1p32); (3) monoallelic del(1p32) along with 1q+ or biallelic del(1p32); or (4) β2 microglobulin ≥5.5 mg/L with normal creatinine (<1.2 mg/dL).
A Phase III, Randomized Study of Daratumumab, Cyclophosphamide, Bortezomib and Dexamethasone (DARA-VCD) Induction Followed By Autologous Stem Cell Transplant or Dara-VCD Consolidation and Daratumumab Maintenance in Patients with Newly Diagnosed AL Amyloido
Hagen, Patrick , Sidana, Surbhi , Parker, Terri L., Zonder, Jeffrey A. , Kourelis, Taxiarchis , Landau, Heather , Hoering, Antje , Sidana, Surbhi , Walker, Brian A. , Sanchorawala, Vaishali , D’Souza, Anita , Rosenthal, Adam, Ailawadhi, Sikander , Orlowski, Robert Z.

Blood | December 5, 2024 | Volume: 144 | Issue: Supplement 1 | Pages: 3309.1-3309.1

10.1182/blood-2024-208227 Get It

Background and significance: Light chain (AL) amyloidosis is a plasma cell malignancy characterized by the production of amyloidgenic clonal light chains that deposit in various tissues. The addition of daratumumab to bortezomib, cyclophosphamide and dexamethasone (Dara-VCD) has improved the depth of hematologic and organ responses and is an approved induction therapy in newly diagnosed AL amyloid patients (DOI: 10.1056/NEJMoa2028631). However, this approach has not yet demonstrated an overall survival (OS) benefit and follow up remains short. With strict adherence to eligibility criteria, in particular severity of cardiac involvement, autologous stem cell transplantation (ASCT) as consolidative therapy is safe with transplant related mortality on par with multiple myeloma. This approach generates deep and sustained responses, but it is unclear if it offers an additional survival benefit following Dara-VCD induction. The only randomized trial evaluating the role of ASCT in AL amyloid is outdated (DOI: 10.1056/NEJMoa070484) and no randomized data exist to inform the optimal use of ASCT in the era of Dara-VCD induction. Furthermore, multi-organ involvement in AL amyloid drives morbidity and mortality thus the impact of any consolidative therapy on cardiac and renal involvement in addition to overall survival but must be defined. Finally, the approval of Dara-VCD therapy was based on complete hematologic response rates but there is increasing data demonstrating that achieving minimal residual disease (MRD) negativity by either bone marrow next generation flow cytometry (DOI: 10.1002/ajh.26562) or peripheral blood mass spectrometry (DOI: 10.1038/s41408-020-0291-8) generates improved organ response, hematologic progression free survival, and possibly OS. Methods: This randomized phase 3 SWOG led intergroup trial (S2213; NCT06022939) is being conducted within the United States and will accrue a total of 143 participants per arm. The primary endpoint will compare MOD-PFS (major organ deterioration progression free survival: defined as time from randomization to death, cardiac/renal progression, or hematologic progression) between participants receiving an ASCT with those receiving 3 cycles of Dara-VCD consolidation following 3 cycles of uniform Dara-VCD induction. Following the assigned consolidation, all patients will receive 18 months of daratumumab maintenance therapy. A median MOD-PFS of 31 months is anticipated in the non-ASCT arm. This study has 90% power and a two-sided significance level of 0.05 to detect a hazard ratio of 0.62 corresponding to a MOD-PFS of 50 months in the ASCT arm. Important additional endpoints include OS, hematologic PFS, cardiac and renal responses, MRD negativity both by peripheral blood mass spectrometry and bone marrow next generation flow cytometry, delayed utilization of ASCT, and quality of life. Key inclusion criteria include non-severe cardiac AL amyloid (NT-proBNP &lt;5000; TnT &lt; 0.06; NYHA I or II, EF ≥ 40%), CrCl ≥30 mL/min, serum dFLC &gt; 2 mg/dL, and supine systolic BP ≥ 90 mmHg. Importantly, patients are permitted to have up to one full cycle or 28 days of any plasma cell directed therapy prior to enrollment. This trial was activated on 12/1/2023 with the first patient enrolled 07/01/2024. Funding: NIH/NCI/NCTN grants U10CA180888, U10CA180819; and in part by Janssen Pharmaceuticals Inc. of Johnson & Johnson (now J&J Innovative Medicine).
Mutationally Enriched Regions of the Non-Coding Genome Harbor Functionally Impactful Mutations That Dysregulate Key Genes Involved in Multiple Myeloma Pathogenesis
Blaney, Patrick , Papadimitriou, Marios , Zhang, Di , Cirrincione, Anthony , Poos, Alexandra M. , Korde, Neha , Rasche, Leo , Mai, Elias K., Weinhold, Niels , Brown, Elizabeth , Bergsagel, Leif, Blaney, Patrick , Maclachlan, Kylee , Mikulášová, Aneta , Gagler, Dylan , Braunstein, Marc , Lahoud, Oscar , Kaminetzky, David , Wang, Yubao , Liu, Sanxiong , Ziccheddu, Bachisio , Kaddoura, Marcella , Chojnacka, Monika , Diamond, Benjamin , Lesokhin, Alexander M. , Usmani, Saad Z. , Mai, Elias K., Raab, Marc S. , Robine, Nicolas , Bergsagel, P. Leif , Walker, Brian A. , Landgren, Ola , Maura, Francesco , Davies, Faith E. , Morgan, Gareth J.

Blood | December 5, 2024 | Volume: 144 | Issue: Supplement 1 | Pages: 4655-4655

10.1182/blood-2024-211012 Get It

Introduction The pathogenic role of somatic non-coding (nc) single nucleotide variants (SNVs) is underexplored in multiple myeloma (MM) and additional characterization of these regions has the potential to provide significant new insights into disease progression. To investigate the role of ncSNVs and their relationship with MM pathogenesis, we have characterized a novel series of WGS from 294 cases of MGUS, SMM, and MM using computational tools optimized to identify functional driver SNVs in these regions. We hypothesize the ncSNVs that co-localize to sites of super-enhancers (SEs) active in plasma cells (PC) are sites of high functional impact SNVs and these mutations lead to the dysregulated expression of genes that should be silent at the terminally differentiated stage of PCs, providing a selective advantage that shapes the fitness of the MM genomic landscape. Methods We analyzed 294 high-coverage matched tumor/normal pairs (80x tumor and 40x normal) derived from 21 MGUS, 86 SMM, 167 NDMM and 40 RRMM. In addition to previously sequenced samples, newly sequenced patients were obtained from NYU Langone Health, Memorial Sloan Kettering Cancer Center, University of Alabama at Birmingham and University of Miami following IRB-approved informed consent. DNA was extracted from CD138+ purified bone marrow plasma cells using standard approaches. We used the MGP1000 (https://github.com/pblaney/mgp1000) to process sequencing data which employs a union-consensus mechanism for determining the final set of variants. We collected enhancer elements (E/SEs) active in GC B-cells, ABC-DLBCL and GBC-DLBCL (Bal, et al. Nature, 2022) and PC specific E/SEs (Loven, et al. Cell 2013). FunSeq2 was used to score ncSNVs. GRAM was used to predict how variants alter TF binding and gene expression in a subset of 6 cases with paired WGS in our series and will expand this analysis on a validation set of 263 NDMM and 93 RRMM cases from University-Hospital Heidelberg enrolled in the GMMG-HD6 clinical trial. Results We identified 1,952,232 high-quality SNVs with 18,199 (0.93%) accumulating in 280 focal sites we termed “mutationally enriched regions” or MERs. To discern SNVs in MERs with the highest potential for imparting a selective advantage, we clustered mutations based on the density of FunSeq2 impact scores which uses reference data contexts on sequence conservation, modification of transcription factor (TF) binding, and gene linkage to regulatory elements and network hubs from pan-cancer studies. We show that MERs are enriched for ncSNVs with high impact scores (mean=2.57) compared to random similarly-sized regions of the genome (Fisher's exact test P&lt;9.7e-12, OR=10.10 [3.88-37.40]). The high impact ncSNVs (hi-ncSNVs) in MERs (n=220) account for 8.09% of all hi-ncSNVs and are present in 46.3% of cases (136/294) with some patients having up to 7. The proportion of cases carrying a MER hi-ncSNVs was similar across disease stages (MGUS=42.9%, SMM=46.5%, MM=40.7%, and RR=47.5%). Analysis of the VAF of MER hi-ncSNVs shows a minor shift towards more clonal versus subclonal mutations (53.6% vs 46.4% VAF&gt;=0.25) suggesting some high impact mutations are acquired in the GC but additional hi-ncSNV are acquired later in PC development, providing evidence that hi-ncSNVs accumulate in MERs throughout disease progression. We mapped these hi-ncSNVs to associated genes then intersected the loci with E/SEs active in GCBs and PCs to determine their functional context. This approach identified 12 genes affected by hi-ncSNVs including the previously identified nc-drivers NEAT1, MIR142, ZCCHC7, and IGLL5 as well as the PC differentiation genes IRF8, BACH2, proliferation genes RHOH, SPRED2, known coding MM drivers CCND1, ZFP36L1, and chr1q genes BTG2 and CROCC. We predicted the effect of ncSNVs on expression through modulation of TF binding at this set of putative nc drivers in MM and identified a trend towards increase in expression of SPRED2, CCND1, NEAT1, and IGLL5 compared to non-mutated cases (P=0.089). We will present data on the validation of this set of genes on a larger set of data derived from the Heidelberg group. Conclusions We identified a set of 12 putative nc driver genes in MM that modify expression and have the potential to significantly alter the pathogenesis of MM by providing a selective survival advantage. We will present the impact of these by clinical stage and on outcome.
A phase III, randomized study of daratumumab, cyclophosphamide, bortezomib and dexamethasone (DARA-VCD) induction followed by autologous stem cell transplant or DARA-VCD consolidation and daratumumab maintenance in patients with newly diagnosed AL amyloido
Hagen, Patrick , Parker, Terri L., Hoering, Antje , Zonder, Jeffrey A. , Kourelis, Taxiarchis , Landau, Heather , Sidana, Surbhi , Walker, Brian Keith, Sanchorawala, Vaishali , D’Souza, Anita , Rosenthal, Adam, Ailawadhi, Sikander , Orlowski, Robert Z.

Journal of Clinical Oncology | June 10, 2024 | Volume: 42 | Issue: 16_suppl | Pages: TPS7575-TPS7575

10.1200/jco.2024.42.16_suppl.tps7575 Get It

TPS7575 Background: Light chain (AL) amyloidosis is a plasma cell malignancy characterized by the production of amyloidgenic clonal light chains that deposit in various tissues. The addition of daratumumab to bortezomib, cyclophosphamide and dexamethasone (Dara-VCD) has improved depth of hematologic and organ responses. However, this approach has not yet demonstrated an overall survival (OS) benefit with short follow-up. Autologous stem cell transplant (ASCT) consolidation remains safe and is associated with deep and durable hematologic responses with an 83% 2-year progression free survival (PFS) and up to 72% of patients achieving a VGPR or better, comparable to Dara-VCD (79%). In multiple myeloma, ASCT improved PFS even in patients who are MRD negative at the end of standard induction therapy. It is thus reasonable to consider that ASCT might provide similar benefits in AL patients. No randomized data exist to inform the optimal use of ASCT in the era of Dara-VCD. Methods: This randomized phase 3 SWOG led intergroup trial will accrue a total of 143 participants per arm and compare MOD-PFS (major organ deterioration progression free survival: defined as time from randomization to death, cardiac/renal progression, or hematologic progression) between participants receiving an ASCT with those receiving Dara-VCD consolidation following uniform Dara-VCD induction. A median MOD-PFS of 31 months is anticipated in the non-ASCT arm. This study has 90% power and a two-sided significance level of 0.05 to detect a hazard ratio of 0.62 corresponding to a MOD-PFS of 50 months in the ASCT arm. Important additional endpoints include OS, hematological PFS, cardiac and renal responses and progression, MRD negativity both by peripheral blood mass spectrometry and bone marrow next generation flow cytometry, delayed utilization of ASCT, and quality of life. This trial was activated on 12/1/2023. Funding: NIH/NCI/NCTN grants and in part by Janssen Pharmaceuticals. Clinical trial information: NCT06022939 . [Table: see text]
Genomic Classification and Individualized Prognosis in Multiple Myeloma
Maura, Francesco , Rajanna, Arjun Raj , Ziccheddu, Bachisio , Poos, Alexandra M. , Derkach, Andriy , Maclachlan, Kylee , Durante, Michael , Diamond, Benjamin , Papadimitriou, Marios , Davies, Faith E. , Boyle, Eileen M. , Walker, Brian A. , Hultcrantz, Malin , Silva, Ariosto, Hampton, Oliver , Teer, Jamie K. , Siegel, Erin M. , Bolli, Niccolò , Jackson, Graham , Kaiser, Martin , Cook, Gordon , Kazandjian, Dickran , Stein, Caleb, Chesi, Marta , Bergsagel, Leif, Elias, K. , Goldschmidt, Hartmut , Fenk, Roland , Rhee, Fritz Van, Usmani, Saad Z. , Shain, Kenneth H. , Weinhold, Niels , Bergsagel, P. Leif , Bergsagel, P. Leif , Davies, Faith E , Walker, Brian A , Jackson, Graham H , Pawlyn, Charlotte , Cook, Gordon , Kazandjian, Dickran , Chesi, Marta , Mai, Elias K , Goldschmidt, Hartmut , Weisel, Katja C , Fenk, Roland , Raab, Marc S , van Rhee, Frits , Usmani, Saad , Shain, Kenneth H , Weinhold, Niels , Landgren, C Ola , Bolli, Niccolo' , Boyle, Eileen M , Kaiser, Martin F , Maura, Francesco , Durante, Michael , Maclachlan, Kylee , Derkach, Andriy , Diamond, Benjamin T , Pawlyn, Charlotte , Stein, Caleb, Raab, Marc S. , Morgan, Gareth J. , Landgren, Ola

Journal of Clinical Oncology | January 9, 2024 | Volume: 42 | Issue: 11 | Pages: 1229-1240

10.1200/jco.23.01277 | PMID 38194610 Get It

PURPOSE Outcomes for patients with newly diagnosed multiple myeloma (NDMM) are heterogenous, with overall survival (OS) ranging from months to over 10 years. METHODS To decipher and predict the molecular and clinical heterogeneity of NDMM, we assembled a series of 1,933 patients with available clinical, genomic, and therapeutic data. RESULTS Leveraging a comprehensive catalog of genomic drivers, we identified 12 groups, expanding on previous gene expression–based molecular classifications. To build a model predicting individualized risk in NDMM (IRMMa), we integrated clinical, genomic, and treatment variables. To correct for time-dependent variables, including high-dose melphalan followed by autologous stem-cell transplantation (HDM-ASCT), and maintenance therapy, a multi-state model was designed. The IRMMa model accuracy was significantly higher than all comparator prognostic models, with a c-index for OS of 0.726, compared with International Staging System (ISS; 0.61), revised-ISS (0.572), and R2-ISS (0.625). Integral to model accuracy was 20 genomic features, including 1q21 gain/amp, del 1p, TP53 loss, NSD2 translocations, APOBEC mutational signatures, and copy-number signatures (reflecting the complex structural variant chromothripsis). IRMMa accuracy and superiority compared with other prognostic models were validated on 256 patients enrolled in the GMMG-HD6 (ClinicalTrials.gov identifier: NCT02495922 ) clinical trial. Individualized patient risks were significantly affected across the 12 genomic groups by different treatment strategies (ie, treatment variance), which was used to identify patients for whom HDM-ASCT is particularly effective versus patients for whom the impact is limited. CONCLUSION Integrating clinical, demographic, genomic, and therapeutic data, to our knowledge, we have developed the first individualized risk-prediction model enabling personally tailored therapeutic decisions for patients with NDMM.
Incidence of Concomitant Semicircular Canal Dehiscence With Otosclerosis
Walker, Brian A. , Thorwarth, Ryan, Stull, Lindsey L., Deep, Nicholas L. , Weisskopf, Peter A., Thorwarth, Ryan M, Stull, Lindsey B., Hoxworth, Joseph M.

Otology & Neurotology Open | August 5, 2022 | Volume: 2 | Issue: 2 | Pages: e012

10.1097/ono.0000000000000012 | PMID 38516327 Get It

Objective: The concurrence of otosclerosis and superior semicircular canal dehiscence (SSCD) presents a diagnostic challenge and failure to differentiate between these 2 diagnoses results in mischaracterization and unsuccessful surgery. The objective of this study is to identify the incidence of SSCD in patients who have computed tomography (CT) evidence of otosclerosis. Study Design: Retrospective chart review. Setting: Tertiary referral hospital. Patients: Adults with CT scan of the temporal bone diagnosed with radiological unilateral or bilateral fenestral otosclerosis from January 1995 to April 2018. Methods: Retrospective review of patient imaging from a multi-center tertiary-referral health system from January 1995 to April 2018. Imaging was reviewed to quantify the incidence of SSCD among patients with CT-diagnosed bilateral fenestral otosclerosis. Poor quality imaging was excluded from review. Results: One-thousand two-hundred eight patients (1214 CT scans) were identified with otosclerosis, of which 373 were diagnosed with fenestral otosclerosis (663 ears) with imaging of sufficient quality for review. This population was predominantly female (57.2%) with bilateral fenestral otosclerosis (78%). Of these, 23 ears (3.5%) had definitive evidence of SSCD, with an additional 15 ears (2.3%) with possible radiographic evidence of SSCD. There was no significant difference in laterality between the SSCD and otosclerosis. Conclusions: Among 373 patients with fenestral otosclerosis per CT temporal bone imaging at a tertiary referral hospital, as many as 8.3% of patients had radiographic evidence of SSCD. Given this incidence, it continues to be important to consider SSCD when diagnosing and treating otosclerosis.
Perspectives on the Risk-Stratified Treatment of Multiple Myeloma
Davies, Faith E. , Pawlyn, Charlotte , Usmani, Saad Z. , Miguel, Jesús F. San , Boyle, Eileen M. , Corre, Jill , Auclair, Daniel , Cho, Hearn Jay , Sonneveld, Pieter , Stewart, A. Keith , Bergsagel, P. Leif , Kaiser, Martin , Morgan, Kathryn E., Ghobrial, Irene M. , Orlowski, Robert Z. , Caers, Joseph, Chari, Ajai , Walker, Brian A. , Kumar, Shaji , Costa, Luciano J. , Bergsagel, P. Leif , San-Miguel, Jesus , Boyle, Eileen M , Corre, Jill , Cho, Hearn Jay , Kaiser, Martin F , Keats, Jonathan J , Mikhael, Joseph R , Orlowski, Robert Z. , Landgren, C Ola , Gay, Francesca , Chng, Wee Joo , Chari, Ajai , Walker, Brian A , Kumar, Shaji K , Costa, Luciano J , Anderson, Kenneth C , Morgan, Gareth J , Davies, Faith E , Ghobrial, Irene M , Pawlyn, Charlotte , Usmani, Saad , Einsele, Hermann , Lonial, Sagar , Weisel, Katja C , Keats, Jonathan J. , Mıkhael, Joseph , Landgren, Ola , Gay, Francesca , Chng, Wee Joo , Anderson, Kenneth C. , Morgan, Gareth J.

Blood Cancer Discovery | June 2, 2022 | Volume: 3 | Issue: 4 | Pages: 273-284

10.1158/2643-3230.bcd-21-0205 | PMID 35653112 Get It

Summary: The multiple myeloma treatment landscape has changed dramatically. This change, paralleled by an increase in scientific knowledge, has resulted in significant improvement in survival. However, heterogeneity remains in clinical outcomes, with a proportion of patients not benefiting from current approaches and continuing to have a poor prognosis. A significant proportion of the variability in outcome can be predicted on the basis of clinical and biochemical parameters and tumor-acquired genetic variants, allowing for risk stratification and a more personalized approach to therapy. This article discusses the principles that can enable the rational and effective development of therapeutic approaches for high-risk multiple myeloma.
Laryngeal Actinomycosis Presenting as Foreign Body
Walker, Brian A. , Gerber, Mark E.

OTO Open | February 10, 2022 | Volume: 6 | Issue: 1 | Pages: No page available

10.1177/2473974x211073701 | PMID 35174301 Get It

Genomic Profiling of Smoldering Multiple Myeloma Classifies Molecular Groups with Distinct Pathogenic Phenotypes and Clinical Outcomes
Bustoros, Mark , Sklavenitis‐Pistofidis, Romanos , Boyle, Eileen M. , Neuse, Carl Jannes , Chavda, Selina J , Boehner, Cody J. , Rahmat, Mahshid , Zhitomirsky, Benny , Dutta, Ankit K. , Trippa, Lorenzo , Casneuf, Tineke, Boyle, Eileen M , Sklavenitis-Pistofidis, Romanos , Anand, Shankara K. , Redd, Robert , Tai, Yu‐Tzu , Dunford, Andrew , Stewart, Chip , Kastritis, Efstathios , Walker, Brian A. , Davies, Faith E. , Dimopoulos, Meletios Α. , Bergsagel, P. Leif , Yong, Kwee , Morgan, Gareth J. , Aguet, François , Getz, Gad , Ghobrial, Irene M.

Blood | November 23, 2021 | Volume: 138 | Issue: Supplement 1 | Pages: 723-723

10.1182/blood-2021-150767 Get It

Abstract Introduction: Multiple Myeloma (MM) is an incurable plasma cell malignancy commonly preceded by the asymptomatic stage smoldering multiple myeloma (SMM). MM is characterized with significant genomic heterogeneity of chromosomal gains and losses (CNVs), translocations, and point mutations (SNVs); alterations that are also observed in SMM patients. However, current SMM risk models rely solely on clinical markers and do not accurately capture progression risk. While incorporating some genomic biomarkers improves prediction, using all MM genomic features to comprehensively stratify patients may increase risk stratification precision in SMM. Methods: We obtained a total of 214 patient samples at SMM diagnosis. We performed whole-exome sequencing on 166 tumors; of these, RNA sequencing was performed on 100. Targeted capture was done on 48 additional tumors. Upon binarization of DNA features, we performed consensus non-negative matrix factorization to identify distinct molecular clusters. We then trained a random forest classifier on translocations, SNVs, and CNVs. The predicted clinical outcomes for the molecular subtypes were further validated in an independent SMM cohort of 74 patients. Results: We identified six genomic subtypes, four with hyperdiploidy (&gt;48 chromosomes, HMC, HKR, HNT, HNF) and two with IgH translocations (FMD, CND) (Table 1). In multivariate analysis accounting for IMWG (20-2-20) clinical risk stages, high-risk (HMC, FMD, HKR) and intermediate-risk (HNT, HNF) genetic subtypes were independent predictors of progression (Hazards ratio [HR]: 3.8 and 5.5, P = 0.016 and 0.001, respectively). The low-risk, CND subtype harboring translocation (11;14) was enriched for the previously defined CD-2 MM signature defined by the B cell markers CD20 and CD79A (FDR = 0.003 ), showed upregulation of CCND1, E2F1, and E2F7 (FDR = 0.01, 0.0004, 0.08), and was enriched for G2M checkpoint, heme metabolism, and monocyte cell signature (FDR = 0.003, 0.003, 0.003, respectively). The FMD subtype with IgH translocations (4;14) and (14;16) was enriched for P53, mTORC1, unfolded protein signaling pathways and plasmacytoid dendritic cell signatures (FDR = 0.01, 0.005, 0.008, respectively). The HKR tumors were enriched for inflammatory cytokine signaling, MYC target genes, T regulatory cell signature, and the MM proliferative (PR) signatures (FDR = 0.02, 0.03, 0.007, 0.02, respectively). The APOBEC mutational signature was enriched in HMC and FMD tumors (P = 0.005), while there was no statistical difference across subtypes in the AID signature. The median follow-up for the primary cohort is 7.1 years. Median TTP for patients in HMC, FMD, and HKR was 3.8, 2.6, and 2.2 years, respectively; TTP for HNT and HNF was 4.3 and 5.2, respectively, while it was 11 years in CND patients (P = 0.007). Moreover, by analyzing the changes in MM clinical biomarkers over time, we found that patients from high-risk subgroups had higher odds of developing evolving hemoglobin and monoclonal protein levels over time (P = 0.01 and 0.002, respectively); Moreover, the absolute increase in M-protein was significantly higher in patients from the high-risk genetic subtypes at one, two, and five years from diagnosis (P = 0.001, 0.03, and 0,01, respectively). Applying the classifier to the external cohort replicated our findings where intermediate and high-risk genetic subgroups conferred increased risk of progression to MM in multivariate analysis after accounting for IMWG staging (HR: 5.5 and 9.8, P = 0.04 and 0.005, respectively). Interestingly, within the intermediate-risk clinical group in the primary cohort, patients in the high-risk genetic subgroups had increased risk of progression (HR: 5.2, 95% CI 1.5 - 17.3, P = 0.007). In the validation cohort, these patients also had an increased risk of progression to MM (HR: 6.7, 95% CI 1.2 - 38.3, P = 0.03), indicating that molecular classification improves the clinical risk-stratification models. Conclusion: We identified and validated in an independent dataset six SMM molecular subgroups with distinct DNA alterations, transcriptional profiles, dysregulated pathways, and risks of progression to active MM. Our results underscore the importance of molecular classification in addition to clinical evaluation in better identifying high-risk SMM patients. Moreover, these subgroups may be used to identify tumor vulnerabilities and target them with precision medicine efforts. Figure 1 Figure 1. Disclosures Bustoros: Janssen, Bristol Myers Squibb: Honoraria, Speakers Bureau; Takeda: Consultancy, Honoraria. Casneuf: Janssen: Current Employment. Kastritis: Amgen: Consultancy, Honoraria, Research Funding; Takeda: Honoraria; Pfizer: Consultancy, Honoraria, Research Funding; Genesis Pharma: Honoraria; Janssen: Consultancy, Honoraria, Research Funding. Walker: Bristol Myers Squibb: Research Funding; Sanofi: Speakers Bureau. Davies: Takeda: Consultancy, Honoraria; Amgen: Consultancy, Honoraria; Abbvie: Consultancy, Honoraria; BMS: Consultancy, Honoraria; Roche: Consultancy, Honoraria; Janssen: Consultancy, Honoraria. Dimopoulos: Amgen: Honoraria; BMS: Honoraria; Takeda: Honoraria; Beigene: Honoraria; Janssen: Honoraria. Bergsagel: Genetech: Consultancy, Honoraria; Oncopeptides: Consultancy, Honoraria; Janssen: Consultancy, Honoraria; Pfizer: Consultancy, Honoraria; Novartis: Consultancy, Honoraria, Patents & Royalties: human CRBN mouse; GSK: Consultancy, Honoraria; Celgene: Consultancy, Honoraria. Yong: BMS: Research Funding; Autolus: Research Funding; Takeda: Honoraria; Janssen: Honoraria, Research Funding; Sanofi: Honoraria, Research Funding; GSK: Honoraria; Amgen: Honoraria. Morgan: BMS: Membership on an entity's Board of Directors or advisory committees; Jansen: Membership on an entity's Board of Directors or advisory committees; Karyopharm: Membership on an entity's Board of Directors or advisory committees; Oncopeptides: Membership on an entity's Board of Directors or advisory committees; GSK: Membership on an entity's Board of Directors or advisory committees. Getz: IBM, Pharmacyclics: Research Funding; Scorpion Therapeutics: Consultancy, Current holder of individual stocks in a privately-held company, Membership on an entity's Board of Directors or advisory committees. Ghobrial: AbbVie, Adaptive, Aptitude Health, BMS, Cellectar, Curio Science, Genetch, Janssen, Janssen Central American and Caribbean, Karyopharm, Medscape, Oncopeptides, Sanofi, Takeda, The Binding Site, GNS, GSK: Consultancy.