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Workforce Analysis of Laryngologists in the United States Between 1993 and 2022
Parikh, Neil U. , Zheng, Melissa , Meratı, Albert L., Johns, Michael M. , Shuman, Elizabeth A. , Shuman, Elizabeth

The Laryngoscope | December 18, 2024 | Volume: 135 | Issue: 5 | Pages: 1759-1766

10.1002/lary.31944 | PMID 39692290 Get It

Introduction This study queries the US laryngology workforce geographic distribution and density and models laryngology workforce trends through 2050. Methods A national database of fellowship‐trained laryngologists (FTLs) and nonfellowship‐trained laryngologists (nFTLs) practicing primarily laryngology was formed by identifying laryngologists via internet search, with validation by regional laryngologists and senior laryngologists on this manuscript. Demographic variables included residency and/or fellowship graduation year, institutional affiliation, and practice zip code. US Census Bureau population data and projections were grouped by hospital referral region (HRR), as defined by the Dartmouth Healthcare Atlas. The National Resident Matching Program (NRMP) provided annual fellowship match data from 2012 to 2022. Results As of May 2023, there were 349 active laryngologists in the United States, including 303 FTLs. The median practice length for all laryngologists was 11 years. HRRs with the largest number of laryngologists were Manhattan, Boston, and Los Angeles, with 23, 16, and 14 respectively. One hundred and ninety‐four of 306 (63%) HRRs did not have an active, primary laryngologist. The national median density of people per laryngologist including HRRs with at least one laryngologist was 645,160. Assuming a 35‐year practice horizon prior to workforce exit and holding the 2018–2022 NRMP average of 18 fellows constant, the number of forecasted laryngologists by 2040 would be 568—an increase of 66%. Conclusions To date, no comprehensive database of practicing US laryngologists nor laryngology workforce forecast exists. Based on current benchmarks, the laryngology workforce would increase by 66% by 2040, ideally addressing the current dearth of laryngologists in low‐density areas. Level of Evidence NA Laryngoscope , 135:1759–1766, 2025
Estimation of prevalence of autoimmune diseases in the United States using electronic health record data
Abend, Aaron, He, Ingrid, Bahroos, Neil , Christianakis, Stratos , Crew, Ashley B., Lipori, Gloria , He, Xing , Murphy, Shawn N. , Herrick, Christopher, Weiner, Mark G. , Zelko, Jacob S., Matute-Arcos, Erica, Abajian, M. , Davis, Heather , Hoberg, Asher A, Ortman, Chris, Gode, Amit D., Osinski, Kristen , Rose, Noel R., Fairweather, DeLisa , Di Florio, Damian N, Fairweather, DeLisa , Wise, Leanna , Avasarala, Jagannadha Rao , Payne, Philip , Lai, Albert M. , Gode, Amit, Taylor, Bradley , Florio, Damian N. Di , Miller, Frederick W. , Tsokos, George C.

Journal of Clinical Investigation | December 12, 2024 | Volume: 135 | Issue: 4 | Pages: No page available

10.1172/jci178722 | PMID 39666393 Get It

BACKGROUND Previous epidemiologic studies of autoimmune diseases in the US have included a limited number of diseases or used metaanalyses that rely on different data collection methods and analyses for each disease. METHODS To estimate the prevalence of autoimmune diseases in the US, we used electronic health record data from 6 large medical systems in the US. We developed a software program using common methodology to compute the estimated prevalence of autoimmune diseases alone and in aggregate that can be readily used by other investigators to replicate or modify the analysis over time. RESULTS Our findings indicate that over 15 million people, or 4.6% of the US population, have been diagnosed with at least 1 autoimmune disease from January 1, 2011, to June 1, 2022, and 34% of those are diagnosed with more than 1 autoimmune disease. As expected, females (63% of those with autoimmune disease) were almost twice as likely as males to be diagnosed with an autoimmune disease. We identified the top 20 autoimmune diseases based on prevalence and according to sex and age. CONCLUSION Here, we provide, for what we believe to be the first time, a large-scale prevalence estimate of autoimmune disease in the US by sex and age. FUNDING Autoimmune Registry Inc., the National Heart Lung and Blood Institute, the National Center for Advancing Translational Sciences, the Intramural Research Program of the National Institute of Environmental Health Sciences.
Management of Acute Decompensated Valvular Heart Disease
Lüsebrink, Enzo , Lanz, Hugo, Kellnar, Antonia , Karam, Nicole , Makkar, Raj, Abraham, William T. , Leon, Martin B. , Sannino, Anna , Shuvy, Mony , Guerrero, Mayra , Fam, Neil , Butler, Javed, Adamo, Marianna, Rudolph, Volker , Tang, Gilbert , Rommel, Karl-Philipp , Thiele, Holger , Maßberg, Steffen , Prendergast, Bernard, Hausleiter, Jörg , Hausleiter, Jörg , Sannino, Anna , Kapadia, Samir , Makkar, Raj , Latib, Azeem , Guerrero, Mayra , Adamo, Marianna , Stocker, Thomas J. , Lurz, Philipp , Praz, Fabien

European Journal of Heart Failure | December 12, 2024 | Volume: 27 | Issue: 4 | Pages: 630-649

10.1002/ejhf.3549 | PMID 39663714 Get It

Abstract Worldwide, valvular heart disease (VHD) is a common cause of hospitalization for acute heart failure. In acute heart failure caused by VHD, symptoms result from rapid haemodynamic changes and subsequent decline in cardiac function, and if left untreated, leads to acute decompensation and cardiogenic shock. Current evidence remains scarce and recommendations regarding the management of acute heart failure caused by VHD are lacking in most recent international guidelines. Herein, we review the management of acute heart failure caused by VHD with a focus on transcatheter therapies and describe currently available evidence based on a systematic literature search on the following valve pathologies: (i) aortic stenosis, (ii) aortic regurgitation, (iii) mitral regurgitation, and (iv) mitral stenosis. Articles reporting outcomes following urgent or emergent valve intervention in the setting of cardiogenic shock or acute heart failure were considered. After screening a total of 2234 articles, 76 published between 1994 and 2023 were included in subsequent analysis. Based on available evidence, proposed treatment algorithms to guide optimal management of acute heart failure caused by VHD were created. As the number of patients presenting with acute heart failure caused by VHD continues to rise and outcomes following transcatheter valve interventions continue to improve, it is inevitable that minimally invasive options will play an increasingly important role in the acute setting, especially given these patients are at an increased operative risk. This review aims to present an organized approach to the complex management and interventional treatment of patients with acute heart failure caused by VHD.
Association between Locoregional Failure and NFE2L2/KEAP1/CUL3 Mutations in NRG/RTOG 9512: A Randomized Trial of Radiation Fractionation in T2N0 Glottic Cancer
Guan, Li , Torres‐Saavedra, Pedro A. , Zhao, Xiaobei , Major, Michael B. , Holmes, Brittany , Nguyen, Ngan K. , Kumaravelu, Parasakthy , Hodge, Tim , Diehn, Maximilian , Zevallos, Jose P. , Emami, Bahman, Hayward, Michele C. , Sagar, Stephen M. , Morrison, William H. , Schultz, Christopher J. , Jones, Christopher U. , Galloway, Thomas J. , Yom, Sue S. , Kudrimoti, Mahesh , Kim, Harold E., Harris, Jonathan , Le, Quynh‐Thu , Holmes, Brittany J , Zevallos, Jose , Holsinger, F Chris , Emami, Bahman , Jordan, Richard C , Hayward, Michele C , Sagar, Stephen M , Morrison, William , Schultz, Christopher , Caudell, Jimmy J , Jones, Christopher U , Bratman, Scott V , Galloway, Thomas J , Ma, Daniel , Yom, Sue S , Kudrimoti, Mahesh , Kim, Harold E , Harris, Jonathan , Le, Quynh-Thu , Hayes, D Neil , Diehn, Maximillian , Holsinger, F. Christopher , Daniel, J.

Clinical Cancer Research | December 10, 2024 | Volume: 31 | Issue: 9 | Pages: 1615-1624

10.1158/1078-0432.ccr-24-2334 | PMID 39656603 Get It

Abstract Purpose: NFE2L2/KEAP1/CUL3 mutations have been validated for radioresistance in cell-based assays and animal models. However, clinical validation of these biomarkers has been challenging because of multimodality treatment regimens. This study aims to investigate the association between NFE2L2/KEAP1/CUL3 mutations and patient outcomes, including local failure, locoregional failure, disease-free survival (DFS), and overall survival, using samples from a phase III trial in which patients were treated with radiation monotherapy at two controlled doses. Patients and Methods: We investigated NFE2L2/KEAP1/CUL3 mutations in 250 randomized patients with T2N0 glottic squamous cell carcinoma receiving definitive radiotherapy in the NRG/RTOG 9512 trial. A total of 119 patients had available biospecimens that were subjected to amplicon-based next-generation sequencing to assess for the presence of NFE2L2/KEAP1/CUL3 mutations without regard to outcomes. Mutations in NFE2L2/KEAP1/CUL3 were assessed blinded to clinical outcomes. Cox models (two-sided α = 0.05) were used to evaluate the association with clinical outcomes, performed by an independent statistical team. Results: Nineteen of 119 patients (16.0%) had NFE2L2/KEAP1/CUL3 mutations. Patient, treatment, and tumor characteristics were similar between those with and without mutations. Patients with mutation compared with those without had significantly more local failure [HR = 3.50; 95% confidence interval (CI), 1.56–7.89; P = 0.0025] and locoregional failure (HR = 3.80; 95% CI, 1.80–8.03; P = 0.0005). DFS was significantly worse for the mutated compared with the nonmutated group in the first 2 years (HR = 2.88; 95% CI, 1.46–5.66; P = 0.0022). The median DFS was shorter in the mutation group (10.3 months) versus those with intact NFE2L2/KEAP1/CUL3 (4.2 years). Conclusions: NFE2L2/KEAP1/CUL3 mutations may predict radiation treatment failure in T2N0 glottic cancer. See related commentary by Rao, p. 1563
Contributions of neurologists to diagnostic timelines of ALS and thinkALS as an early referral instrument for clinicians
Dave, Kuldip D. , Yersak, Jill, Krauss, Ramona , Heiman‐Patterson, Terry , Lomen‐Hoerth, Catherine , Selig, Wendy , Paul, Ilisa Halpern, Schaeffer, Melody , Garcia-Trujillo, Brittany, Waldo, Daniel R., Thakur, Neil , Babu, Suma , Oskarsson, Björn

Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration | December 10, 2024 | Volume: 26 | Issue: 3-4 | Pages: 215-224

10.1080/21678421.2024.2432034 | PMID 39654532 Get It

Scoping Review of Ethical Discourse in Global Cleft Surgery Literature
Shamim, Abrar , Ming, Neil, Seo, G., Khalili, Tali, Brady, Noah , Choi, J. , Seo, Ga Young, Wu, Anette

Journal of Craniofacial Surgery | December 6, 2024 | Volume: 36 | Issue: 3 | Pages: e345-e351

10.1097/scs.0000000000010974 | PMID 39641787 Get It

Background: The ethical discourse regarding the delivery of global surgical care has increased in the 21st century. The aims of this manuscript are to explore the differences in ethical domains in the global cleft surgical literature discussed by authors from high-income countries versus lower-middle-income countries and to elucidate changes in ethical discussions over the last decade. Methods: A thematic coding analysis was completed using NVivo 12 qualitative data analysis software. Articles were analyzed and coded for discussion of 24 distinct subdomains in the global cleft surgical literature from 1992 to 2022. Findings: The domains with the most significant discourse in the global cleft surgery literature found were (1) clinical care and delivery and (2) engagement in collaborations and partnerships. Furthermore, when manuscripts are first authored by low- and middle-income country (LMIC) authors, the subdomains of (1) level of visiting trainee supervision, (2) relevance of educational activities, and (3) patient/procedure/location selection increase in relative discourse. The impact of visiting trainees on local educational programs is the ethical subdomain that has the largest increase in the last decade. There are barriers to publication as evidenced by the exclusion of abstracts which included LMIC authors but did not result in publications in peer-reviewed journals. Conclusions: A critical finding of this study is that the distribution of discussed ethical domains differs when LMIC authors are included as authors, in particular when primary authorship is from an LMIC author. To the authors' knowledge, there is no other study to date which has attempted this form of analysis.
The Impact of Therapeutic Selective Pressure on the Evolutionary Landscape of Chronic Lymphocytic Leukemia
Karisani, Negin , Gohil, Satyen , Schlueter-Kuck, Kristy , Rassenti, Laura Z., Tran, Tuan N., Cheung, Leo W.K. , Szafer-Glusman, Iliana Edith, Rai, Kanti R., Brown, Jennifer R. , Byrd, John C., Wu, Catherine J. , Byrd, John C. , Byrd, John C , Sud, Amit , Li, Liang , Gohil, Satyen Harish , Dean, James P. , Chen, Guang , Tsuji, Junko , Kay, Neil E. , Rai, Kanti R., Gribben, John G. , Neuberg, Donna , Stewart, Chip , Božić, Ivana , Kipps, Thomas J. , Getz, Gad

Blood | December 6, 2024 | Volume: 144 | Issue: Supplement 1 | Pages: 3233-3233

10.1182/blood-2024-199916 Get It

BACKGROUND Our knowledge of how the genomic landscape of chronic lymphocytic leukemia (CLL) is impacted by the selective pressure imposed by chemotherapy and targeted agents remains incomplete. We hypothesize that the extent of clonal evolution, baseline transcriptional state, and the overall and clone-specific growth kinetics of CLL will vary under native conditions or following exposure to chemotherapy and targeted therapy. METHODS We report the systematic genomic analysis of leukemia-normal whole-exome sequencing (WES) of 420 samples collected from 170 patients who were >65 years of age with treatment-naïve CLL. The treatment-cohort consisted of 83 patients who received ibrutinib (420mg daily) and 40 patients who received chlorambucil (0.5 mg/kg up to maximum 0.8 mg/kg, on days 1 and 15 of a 28-day cycle, up to 12 cycles) as part of the RESONATE-2 trial (NCT01722487). The ‘watch and wait’ (WW) cohort comprised 47 age-matched patients whose samples originated from the CLL Research Consortium and were untreated for their CLL during sampling. Sampling occurred at baseline and at day 300, and/or day 600, following initiation of therapy or following a diagnosis of CLL for those in the WW cohort. The WW cohort had more cases with a mutated IGHV (72% vs 40%), del17p (14% vs 0%), and del13q (72% vs 45%) when compared to the treatment cohort. Baseline CLL RNA-seq data were available for 150 patients. We used PhylogicNDT to reconstruct the clonal architecture from WES. By determining the fraction of cancer cells with each mutation (cancer cell fraction [CCF]) and their multiplicities (number of DNA molecules carrying a mutation per cancer cell), subclones were identified through clustering of CCFs of mutational events across samples from each patient. This allowed us to estimate the phylogenetic relationships and significant clonal shifts (defined as a distribution shift of CCF in a subclone of >95% between two timepoints, corresponding to a median ΔCCF of 18%) for each patient's CLL and to relate these shifts to somatic and clinical features. RESULTS In total, we identified 791 subclonal clusters across the three patient cohorts (ibrutinib = 406, chlorambucil = 189, WW = 196). We observed higher rates of significant clonal shifts between any two time points in patients exposed to chlorambucil (68%, q=0.008) and ibrutinib (77%, q<0.0001) when compared to patients on WW (36%). There was no significant difference in the number of patients exhibiting a clonal shift between those receiving ibrutinib and chlorambucil (q=0.3). More patients treated with ibrutinib (54%, q=0.0002) and chlorambucil (50%, q=0.004) harbored a clone that reduced in size than those on WW (17%). More patients treated with ibrutinib (71%, q<0.0002) and chlorambucil (55%, q=0.12) possessed at least one clone that increased in size during therapy than patients receiving WW (34%). In ibrutinib-treated patients, SF3B1 mutations (q=0.13, 14% vs 5%) and XPO1 mutations (q=0.13, 5% vs 0.3%) were enriched in subclones that significantly reduced over the complete time period. We also observed more BIRC3 mutations in subclones that had a significant shift in CCF when compared to subclones that remained stable over time (q=0.2, 5% vs 2%). Consistent with the overall study, with 8 years of follow-up in this patient subset, long-term progression-free survival (PFS) was significantly higher in the patients treated with ibrutinib when compared to chlorambucil (P<0.0001). This PFS benefit was also seen regardless of subclonal growth patterns. Using baseline RNA-seq data, we identified 7 of the 8 recently defined CLL expression clusters (EC), that were identified in the context of chemoimmunotherapy for CLL (Knisbacher et al. Nat Gen 2022), and could recapitulate the relationship to outcomes in individuals treated with chlorambucil. However, despite the larger cohort, no significant relationship between EC clusters and PFS were observed in ibrutinib-treated patients, suggesting that a distinct predictive baseline transcriptional signature may be present in ibrutinib-treated patients. CONCLUSION Our analyses highlight the need to interrogate the molecular features of CLL in relation to the impact of therapeutic selective pressure imposed by BTK inhibition, which appear distinct from exposure to chemotherapy. Ongoing analyses aim to identify relationships between patterns of growth and subclonal growth rates molecular and clinical features.
The Incidence of CNS Relapse in Philadelphia Chromosome Positive (Ph+) Acute Lymphoblastic Leukemia (ALL) and Its Impact on Clinical Outcome: Results from Consortium on Myeloid Malignancies and Neoplastic Diseases (COMMAND)
Shah, Kashish J., Kettani, Mobachir El , Narra, Ravi , Coltoff, Alexander , Medawar, Georgio , Hisrich, Brooke, Shallis, Rory M. , Hunter, Cameron J. , Desai, Shreya, Correia, Guilherme Sacchi de Camargo, Palmisiano, Neil , Curran, Emily , Litzow, Mark R. , Shah, Kashish J., Mims, Alice S , Kota, Vamsi , Othman, Tamer , Jonas, Brian A. , Patel, Anand , DuVall, Adam , Omer, Zulfa , Advani, Anjali S. , Atallah, Ehab , Litzow, Mark R. , Badar, Talha

Blood | December 6, 2024 | Volume: 144 | Issue: Supplement 1 | Pages: 4184-4184

10.1182/blood-2024-205812 Get It

Background While central nervous system (CNS) disease is found in minority of patients (pts) at diagnosis of Ph+ ALL, later relapses can occur in pts despite adequate CNS prophylaxis. CNS disease can be managed with varying combinations of systemic, radiation, and intrathecal (IT) therapy and can be associated with significant toxicity, especially in older pts. While there are more durable systemic responses with 2nd or 3rd generation tyrosine kinase inhibitors (TKIs) based combinations, CNS penetration can vary by TKI. In this large multi-center study, we analyze the incidence of CNS disease in Ph+ ALL in the context of induction therapies and survival post relapse. Methods We conducted a multicenter observational study in collaboration with 10 U.S. academic centers under the COMMAND consortium and reviewed the incidence of CNS relapse in 505 Ph+ ALL pts. We evaluated baseline characteristics, treatment given prior to CNS relapse, and outcome post relapse. Results Baseline characteristics, initial treatment and outcome prior to CNS relapse Eighteen (3.56%) pts were identified to have CNS disease at relapse. Median age of the pts in years (yrs) was 51 (range [R], 22-75), median white blood cell (WBC) was 33.3 x 10(9)/L (R, 2.1-200) and 6 (33%) pts had additional cytogenetic abnormalities at diagnosis. Sixty-one percent (n= 11) of pts received intensive chemotherapy (IC) during induction; 2 (11%), 14 (78%) and 2(11%) of pts received 1st, 2nd or 3rd generation TKI-based combination during induction, respectively. All of pts achieved complete remission (CR), 45.5% achieved complete molecular remission (CMR) at 3 months from the time of diagnosis. Five (28%) pts received allogeneic stem cell transplantation (allo-HCT) as a consolidation therapy. Treatment received at CNS relapse and response The median time to CNS relapse after induction was 10.8 months (mo) (R, 2-79). All pts except 1 had isolated CNS relapse after CR1, 4/18 (22%) pts had T315I mutation at relapse. Twelve (67%) and 6 (33%) pts received intrathecal chemotherapy (IT) with TKI and systemic chemotherapy + TKI in addition to IT, respectively. Eleven (61%) pts received dasatinib, 5 (28%) pts received ponatinib and one (6%) pts each received bosutinib and imatinib at relapse. Ninety-three percent of pts achieved CR (n=3, not evaluable). Six (33%) pts underwent allo-HCT after CNS relapse, one of these transplanted pts had second allo-HCT. Survival after CNS relapse The median relapse free survival (RFS) and overall survival (OS) after CNS relapse was 9.8 (95% CI: 3.80-15.76) and 13.87 (95% CI: 4.08-23.65) mo, respectively. In subset analysis, we compared survival outcome among pts who had relapse without CNS involvement (n= 160/505 [32%]). The median RFS (9.9 vs 9.8, p= 0.88) and OS (31.53 vs 28.80, p= 0.57) after relapse was not significantly different among pts who had relapse with or without CNS involvement, respectively. We also compared OS among pts without relapse to those with relapse. The median OS was not reached (NR; 73% alive at 5 years), 28.80 and 31.53 months (p= <0.001) among pts with no relapse, relapse with CNS and without CNS involvement, respectively. Conclusion Our retrospective analysis from a large database showed that CNS relapses were uncommon (3.56%) in adult pts with Ph+ ALL. A majority of pts (89%) received a 2nd or a 3rd generation TKI during induction. Approximately one quarter of pts with CNS relapse had emergence of T315I mutation. While almost all pts achieved CR, the RFS was relatively short. We did not see significant differences in survival among pts who had relapse with or without CNS involvement.
Prevalence, Genetic Predispositions and Clinical Consequences of Non-CLL-Type MBL: Screening in 10,330 Individuals
Yao, Yuan , Achenbach, Sara J., Olson, Janet E., Basnet, Soren, Robinson, Dennis P. , Hoel, Mingma , Call, Timothy G., Vachon, Celine M. , Hanson, Curtis A. , Shanafelt, Tait D. , Shanafelt, Tait D , Parikh, Sameer A. , Norman, Aaron D. , Rabe, Kari G. , Boddicker, Nicholas , Olson, Janet E. , Waller, Rosalie G. , Basnet, Soren, Clay‐Gilmour, Alyssa , Lehman, Stacey L. , Cerhan, James R. , Vachon, Celine M. , Kay, Neil E. , Braggio, Esteban , Slager, Susan L.

Blood | December 5, 2024 | Volume: 144 | Issue: Supplement 1 | Pages: 397-397

10.1182/blood-2024-194932 Get It

Background: Monoclonal B-cell lymphocytosis (MBL) is a common premalignant condition that can be classified into chronic lymphocytic leukemia (CLL)-type (CD5, CD23, and CD20 co-expression), and non-CLL-type (CD5-negative) based on flow cytometry immunophenotypes. CLL-type MBL is relatively well characterized with increased risk of hematologic (especially lymphoid) malignancies, serious infections, and decreased response to vaccinations. However, the prevalence, genetic predispositions, and clinical consequences of non-CLL-type MBL remain to be fully elucidated. Herein, we report findings in non-CLL-type MBL in a large screening cohort. Methods: We screened 10,330 individuals (40 years or older with no prior history of hematologic cancers) for MBL with highly sensitive flow cytometry, in the Mayo Clinic Biobank, with patients recruited from primary care-based clinics. Individuals were genotyped by Regeneron Genetics. Logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (CI). Among those individuals residing in the 27 counties surrounding Rochester, Minnesota, we identified incident hematologic malignancies and melanomas using ICD codes and the Rochester Epidemiology Project, a population based medical records linkage system. All diagnoses were manually reviewed for confirmation. Cox regression was used to calculate hazard ratios (HR) and 95% CIs, adjusted for age and sex. Results: We identified 1,736 individuals with MBL and 8,341 individuals without MBL. Among those with MBL, 246 (14.2%) had non-CLL-type MBL as the major clone. The median age of non-CLL-type MBL was 77 years (range, 47-95). The prevalence of non-CLL-type MBL significantly increased with age, with 0.5% prevalence among those between 40 to 59 years of age, 2.3% prevalence among those between 60 and 79 years, and 7.8% prevalence in those 80 years of age or older. The prevalence of non-CLL-type MBL was significantly higher (P < .001) among males (3.1%) than females (2.0%). Using the genome-wide complex trait analysis tool, the heritability of non-CLL-type MBL was estimated to be ~26%, suggesting inherited genetics plays a role in etiology. To identify common inherited variants, we first evaluated the known CLL susceptibility variants, many of which also associated with CLL-type MBL. Among the 42 variants, none were statistically associated (all P > .05) with non-CLL-type MBL. We next conducted a genome-wide association study to identify novel variants, and the most significant variant resided in 10q26.3 (minor allele frequency [MAF]control = 0.7%, MAFMBL = 3.5%, OR = 6.4, 95% CI 3.6-11.3, P = 5.7 * 10-8). Among the 6,478 individuals (192 with non-CLL-type MBL and 6,286 without MBL) followed for incident hematologic malignancies, 36 developed lymphoid and 23 developed myeloid malignancies after a median of 4.2 years of follow up. Similar to CLL-type MBL, non-CLL-type MBL was associated with a 5.2-fold risk for lymphoid malignancies (95% CI 2.0-13.0, P < .001). Elevated but not significant risks were observed for myeloid malignancies (HR = 2.3, 95% CI 0.5-10.3, P = 0.27). The lymphoid malignancies developed by individuals with non-CLL-type MBL included diffuse large B-cell lymphoma, multiple myeloma, marginal zone lymphoma, and other low-grade lymphomas. We recently reported that individuals with CLL-type MBL are at higher risk for developing melanoma (HR = 1.9, 95% CI 1.3-2.8). Interestingly, non-CLL-type MBL had no evidence of an association with melanoma risk (HR = 0.4, 95% CI 0.1-1.8). We did not observe a significant difference in overall survival between individuals with non-CLL-type MBL vs those without MBL. Conclusions: In the largest screening cohort to date, we evaluated the etiology and clinical outcomes of non-CLL-type MBL, an understudied yet common condition that occurs in ~4 million adults in the United States. Non-CLL-type MBL is more common in men and older individuals, and evidence supports that inherited genetics plays an etiological role with 10q26.3 locus identified as a novel susceptibility locus. Individuals with non-CLL-type MBL had significantly increased risk of lymphoid malignancies, similar to CLL-type MBL, but, distinct from CLL-type MBL, no evidence of an increased risk of melanoma. Our study provides insights into the prevalence, genetic predispositions and clinical consequences of non-CLL-type MBL and how it differs from the classic CLL-type MBL.
A High-Fiber Dietary Intervention (NUTRIVENTION) in Precursor Plasma Cell Disorders Improves Biomarkers of Disease and May Delay Progression to Myeloma
Cogrossi, Laura Lucia , Policastro, Anna , Jenna, Blaslov, Adintori, Peter , McAvoy, Devin , Baichoo, Mirae , Anuraj, Aishwarya , Pohl, Charlotte , Sanchez, Jenny Paredes, Gipson, Brianna , Block, Torin , Korde, Neha , Tan, Carlyn , Hultcrantz, Malin , Hassoun, Hani , Scordo, Michael , Landau, Heather J., Chesi, Marta, Bergsagel, P. Leif , Mailankody, Sham , Giralt, S., Iyengar, Neil M. , Pohl, Charlotte , Shah, Urvi A. , Derkach, Andriy , Castro, Francesca , Fei, Teng , DeWolf, Susan , Garcés, Juan‐José , Grioni, Matteo , Sisti, Sofia , Hosszu, Kinga K , Cross, Justin R , Ramos, Ruben, Maclachlan, Kylee , Gradissimo, Ana , Boiocchi, Leonardo , Koche, Richard P , Chaligne, Ronan , Shah, Gunjan L. , Lahoud, Oscar , Chung, David J , Landau, Heather , Peled, Jonathan U. , Clementi, Nicola , Chesi, Marta , Bergsagel, P. Leif , Pollak, Michaël , D’Souza, Anita , Landgren, Ola , Chimonas, Susan , Usmani, Saad Z. , Lesokhin, Alexander M. , Bellone, Matteo , van den Brink, Marcel R M

Blood | December 5, 2024 | Volume: 144 | Issue: Supplement 1 | Pages: 671-671

10.1182/blood-2024-202224 Get It

Introduction Poor diet quality, elevated body mass index (BMI), insulin resistance, microbiome dysbiosis, inflammation as well as immune dysfunction have all been implicated in progression from monoclonal gammopathy of undetermined significance (MGUS) and smoldering multiple myeloma (SMM) to multiple myeloma (MM). Plant-based diets have been associated with reduced risk of MGUS and MM in epidemiological studies. Whether a dietary intervention can impact these modifiable risk factors and delay disease progression has not been investigated. Methods We conducted a pilot, single-arm trial providing controlled high fiber plant based dietary (HFPBD) intervention for 12 weeks and health coaching for 24 weeks in 20 patients with MGUS/SMM with BMI≥25 (NCT04920084). The primary endpoint was feasibility (adherence and BMI reduction). Secondary and exploratory endpoints included quality of life, metabolic markers (insulin, adiponectin, leptin, LDL cholesterol), microbiome (diversity and composition by 16S and shotgun sequencing) and immune profiling in peripheral blood (flow cytometry and Olink inflammation panel) and bone marrow (scRNAseq and ATACseq). We also conducted an in vivo study in transgenic Vk*MYC mice fed a high fiber or control diet at the phase of mouse(m)SMM. The mice were monitored for the progression to active mMM. Differences in microbiome and immune response profiles between high fiber- and control-treated mice were assessed via microbiome 16S sequencing and flow cytometry. Results The HFPBD intervention was safe, feasible, improved quality of life and addressed modifiable risk factors - metabolic profile (improved BMI, insulin resistance, adiponectin leptin ratio), microbiome profile (increased alpha-diversity and butyrate producers) and immune (decreased inflammation and increased anti-inflammatory classical monocyte) subsets. A reduction in long-term progression trajectory was observed in 2 patients. Consistently, the high fiber diet delayed progression from mSMM to mMM in Vk*MYC mice increasing median progression-free survival from 12 weeks in the control arm to 30 weeks in the high fiber diet intervention arm. Additionally, in the intervention arm 40% of mice did not progress to mMM during the study period whereas all mice in the control arm progressed. Both human and mouse data showed that HFPBD modulated gut microbiota composition favoring the expansion of butyrate-producing bacteria. Additionally, short-chain fatty acids were increased in the feces of mice fed a high fiber diet. Integrated analysis from human bone marrow and peripheral blood analysis indicated that the dietary intervention reduced inflammatory biomarkers and skewed the immune response towards T helper and CD14+ monocytes. Consistently, the bone marrow of Vk*MYC mice fed high fiber diet was more infiltrated by IFNg-producing T lymphocytes while displaying less exhausted T cells and immunosuppressive myeloid cells. Conclusion This is the first interventional clinical trial and in vivo study to show that a HFPBD intervention may delay progression from MGUS/SMM to MM. To our knowledge there has been no similar dietary interventional study in hematological cancers or solid tumors. Together our in vivo and clinical data support the beneficial anti-inflammatory role of a HFPBD providing a link between diet, microbiota, and immune modulation to delay disease progression in MGUS/SMM.