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15414 citation(s) found for "Iv, Michael".

Consensus recommendations for CAR T-cell administration in adult acute lymphoblastic leukemia: a modified Delphi study
Muffly, Lori , Frey, Noelle V. , Roloff, Gregory W. , Park, Jae H, Advani, Anjali S. , Bachanová, Veronika , Cassaday, Ryan D. , Daunov, Michael , Dykes, Kaitlyn C. , Gatell, Vivian Irizarry , Jamy, Omer , Kota, Vamsi, Kumaran, Muthu, O’Dwyer, Kristen M. , Oliai, Caspian , Schwartz, Marc S., Solh, Melhem M., Stock, Wendy, Tsai, Stephanie B., Ulrickson, Matthew L., Vasu, Sumithira, Leonard, Jessica T., Aldoss, Ibrahim, Dholaria, Bhagirathbhai R , Advani, Anjali S , Cassaday, Ryan D , Daunov, Michael , Dykes, Kaitlyn C , Grunwald, Michael , Hilal, Talal , Hill, LaQuisa C , Jamy, Omer , Lin, Chenyu , Logan, Aaron C , Luskin, Marlise R , O'Dwyer, Kristin , Oliai, Caspian H , Oluwole, Olalekan O , Sasine, Joshua , Wang, Eunice S. , Strickland, Stephen Anthony , Leonard, Jessica T , Shah, Bijal , Bachanova, Veronika , Muffly, Lori , Frey, Noelle V , Roloff, Gregory W , Dholaria, Bhagirathbhai , Grunwald, Michael R. , Hilal, Talal , Hill, LaQuisa C. , Kota, Vamsi , Oluwole, Olalekan O. , Sasine, Joshua , Solh, Melhem , Stock, Wendy , Tsai, Dr. Stephanie B., Ulrickson, Matthew L. , Vasu, Sumithira , Yalniz, Fevzi , Shah, Bijal , Aldoss, Ibrahim

Blood | May 19, 2026 | Volume: 148 | Issue: 6 | Pages: 657-668

10.1182/blood.2026033559 | PMID 42154904 Get It

Abstract The use of chimeric antigen receptor (CAR) T-cell therapy is increasing for adult B-cell acute lymphoblastic leukemia (B-ALL), with 3 CD19 CAR T-cell products commercially available. Several key clinical questions related to best practices for CAR T-cell administration in this population exist, and limited prospective randomized trials have been conducted to fill these knowledge gaps. Thus, to help guide clinical practice, we conducted a modified Delphi study to develop and validate consensus recommendations on the administration of commercially available CAR T-cell therapy for adults with B-ALL. Consensus panelists (n = 9) included principal investigators (PIs) from Real World Outcomes Collaborative of CAR T-Cell Therapy in Adult ALL (ROCCA) consortium sites and were selected based on expertise and CAR T-cell center volume. Final panel consensus recommendations were distributed for rating by the remaining PIs from ROCCA consortium sites, which served as the validation group (n = 27). Consensus topics included patient selection, bridging and pre–CAR T-cell leukemia staging, lymphodepletion, and CAR T-cell treatment setting, specific toxicity prevention and management, post–CAR T-cell response assessment and disease monitoring, and the role of consolidation and/or maintenance therapies after CAR T-cell therapy. Initially, 58 recommendation statements were evaluated for consensus. After 2 panel meetings, a total of 34 statements achieved consensus rating among the expert panel. After rating by the validation group, all but 1 recommendation statement continued to meet consensus, for a total of 33 consensus recommendation statements on the administration of CAR T-cell therapy in adult B-ALL.
Optimizing Radiography Utilization: Multidisciplinary Expert Consensus Recommendations Endorsed by the Society of Academic Bone Radiologists, Society of Skeletal Radiology, American Society of Emergency Radiology,
Rilland, Eddy D. Zandee van , Fayad, Laura M. , Link, Thomas M. , Davis, Kirkland W. , Wu, Jim S. , Chang, Eric Y. , Chow, Lawrence C. , Desai, Shaun C., Fritz, Jan, Gorbachova, Tetyana , Gray, Mingyang L., Gross, Joel A. , Ha, Patrick K., Halle, Tyler R. , Hall, M. Kennedy, Lee, Mark A. , Mann, Edana D. , Obey, Mitchel R. , Osgood, Greg M., Patel, Zara M. , Rendon, Juan M. , Sabbatini, Amber K. , Tannoury, Chadi , Yu, Joseph S. , Boutin, Robert D. , Zandee van Rilland, Eddy D , Brown, Ian P , Chang, Eric Y , Chow, Lawrence C , Gatz, J David , Garner, Hillary W , Gorbachova, Tetyana , Guermazi, Ali , Halle, Tyler R , Hanna, Tarek N , Kornblith, Aaron E , Lopez-Ben, Robert R , Mann, Edana D , Moore, Christopher L. , Obey, Mitchel R , Patel, Zara , Raja, Ali S , Rendon, Juan M , Sabbatini, Amber K , Tannoury, Chadi , Yu, Joseph S , Boutin, Robert D , Link, Thomas M , Desai, Shaun C. , Fritz, Jan , Garner, Hillary W. , Gray, Mingyang Liu , Hall, M. Kennedy , Osgood, Greg Michael

Radiology | May 19, 2026 | Volume: 319 | Issue: 2 | Pages: No page available

10.1148/radiol.252309 | PMID 42153836 Get It

Expert consensus recommendations from 21 academic centers were established for appropriate radiography utilization at 12 potentially low-yield anatomic sites through a multidisciplinary process endorsed by six major American medical societies.
Rebuilding the clinical academic pipeline: an early career vision for reform
Drozd, Michael, Sebopelo, Lorraine, Nimmons, Danielle , Safdar, Nawaz, Varghese, Chris, Drozd, Michael , Sebopelo, Lorraine Arabang , Safdar, Nawaz Z. , Varghese, Chris

BMJ | May 19, 2026 | Volume: 393 | Issue: No issue available | Pages: e088639

10.1136/bmj-2025-088639 | PMID 42156112 Get It

Design and preliminary report of a randomized phase IIb clinical trial of multitargeted recombinant adenovirus 5 vaccines against CEA, MUC1, and brachyury (Tri-Ad5) and the IL-15 receptor superagonist nogapendekin alfa inbakicept in Lynch syndrome (TRIAD5-
Bansal, Ajay, Stoffel, Elena M., Lim, Ramona , Burke, Carol, Hall, Michael J., Singh, Aparajita , Boardman, Lisa A., Samadder, Niloy Jewel, Ballestar, Veroushka, Muller, Charles, Scott, Aaron J. , Xu, Yanfei , Eickhoff, Jens, Meredith, Hyun, Aquila, Lanni , Szabó, Éva , Della’Zanna, Gary , Bengtson, Lisa, Schlom, Jeffrey, Donahue, Renee N., Horn, Lucas A., Palena, Claudia, Gulley, James L., Samaddar, Sohini, Moore, Dennis F., Sharma, Parth, Madan, Rashna , Hurley, Karen, Soon‐Shiong, Patrick , Gabitzsch, Elizabeth, Sender, Lennie, Brenner, Dean, Schuetze, Scott, Djuric, Zora, Barroilhet, L. E., Thompson, Patricia, Bauman, Julie, Khan, Seema, Vilar, Eduardo, Szabo, Eva , Stoffel, Elena M. , Stanich, Peter P. , Patel, Swati , Burke, Carol A. , Hall, Michael J. , Muller, Charles , Benante, Kelly A. , Eickhoff, Jens C. , Zaborek, Jen , Umar, Asad , Richmond, Ellen S. , Schlom, Jeffrey , Donahue, Renee Nicole , Toney, Nicole J. , Palena, Claudia , Gulley, James L , Moore, Dennis F., Djurić, Zora , Barroilhet, Lisa , Vilar, Eduardo

Frontiers in Immunology | May 19, 2026 | Volume: 17 | Issue: No issue available | Pages: No page available

10.3389/fimmu.2026.1809281 | PMID 42238576 Get It

Introduction Lynch syndrome (LS) is a hereditary cancer syndrome that increases risk for colorectal and other cancers. We hypothesize that vaccines against tumor-associated antigens CEA, MUC1, and brachyury, simultaneously delivered in an adenovirus serotype-5 vector (Tri-Ad5) combined with the immune-enhancing IL-15 receptor superagonist nogapendekin-alfa-inbakicept (NAI) will reduce the incidence of colorectal neoplasms in LS carriers. Methods In this ongoing phase IIB double-blind placebo-controlled trial, two open-label safety phases (SPs) assessed safety of Tri-Ad5 alone (SP1, n=10) and with added NAI (SP2, n=10). A randomized controlled trial (RCT) follows the SPs. After baseline colonoscopy, vaccine dosing occurs at weeks 0, 4 and 8; Tri-Ad5 alone in SP1 and Tri-Ad5 plus NAI in SP2, with identical boosters at Week 52. The RCT phase participants (n=138) were randomized to receive Tri-Ad5 plus NAI or placebo. All participants complete colonoscopy at Weeks 52 and 104 for assessment of the primary endpoint: cumulative colorectal neoplasm incidence. Secondary endpoints include safety, tolerability, and immunogenicity. Results All 20 SP participants (median age 57.5 (range 42–75), 70% female, 15% minority) received all prime and booster series. SP1 participants reported 139 adverse events (AEs) and SP2 participants reported 178. AEs were predominantly grade 1; no treatment-related serious adverse events (SAEs) occurred. The most common treatment-related AEs were reactogenic events including grade 3 rash (without skin necrosis or breakdown) at NAI injection site (100% of SP2 participants). The RCT phase (n=138) recently completed accrual. Discussion In LS carriers without active cancer, the combination of Tri-Ad5 + NAI was well-tolerated; the RCT phase is ongoing. Clinical Trial Registration https://clinicaltrials.gov/study/ , identifier NCT05419011.
Elevated AD biomarkers do not explain cognitive performance in a community‐recruited clinical trial cohort
Landau, Susan , Taggett, Jacinda , Ward, Tyler J. , Murphy, Alice, Lovato, Laura, Koeppe, Robert, Farias, Sarah Tomaszewski , Snyder, Heather M. , Harvey, Danielle , Weiner, Michael W. , Baker, Laura D. , Jagust, William J. , Initiative, U.S. POINTER Study Group and Alzheimer's Disease Neuroimaging, Harvey, Danielle J , Liu, Peiwei , Harrison, Theresa M. , Lockhart, Samuel N. , Papp, Kathryn V. , Espeland, Mark Andrew , Maillard, Pauline , DeCarli, Charles , Vemuri, Prashanthi , Initiative, U.S. POINTER Study Group and Alzheimer's Disease Neuroimaging

Alzheimer's & Dementia | May 19, 2026 | Volume: 22 | Issue: 5 | Pages: No page available

10.1002/alz.71472 | PMID 42151735 Get It

Abstract INTRODUCTION To examine the generalizability of Alzheimer's disease (AD) biomarker models in real‐world older adults, we examined AD biomarker relationships with cognition in two multicenter cohorts that differ with respect to recruitment approach and health risk factors but were matched on a variety of characteristics. METHODS We compared harmonized health and demographic data, AD and cerebrovascular biomarkers, and cognitive performance in the community‐recruited U.S. Study to Protect Brain Health Through Lifestyle Intervention to Reduce Risk (U.S. POINTER) Imaging substudy and a matched sample from the Alzheimer's Disease Neuroimaging Initiative (ADNI) which recruited primarily from academic specialty clinics. RESULTS Elevated β‐amyloid (Aβ) and tau were associated with cognitive performance in ADNI but not U.S. POINTER. Findings were consistent across different cohort matching schemes, and were not explained by discrepancies in vascular risk. DISCUSSION The role of Aβ and tau in cognitive performance may be reduced in real world samples compared to academic specialty clinics.
A National Cross-sectional Assessment of the Mayo Clinic Vestibular Schwannoma Quality of Life (VSQOL) Index by Tumor Management Strategy
Epperson, Madison V. , Lohse, Christine M., Link, Michael J., Carlson, Matthew L., Epperson, Madison V. , Lohse, Christine M. , Link, Michael J. , Carlson, Matthew L.

Otology & Neurotology | May 19, 2026 | Volume: 47 | Issue: 8 | Pages: 1016-1022

10.1097/mao.0000000000004945 | PMID 42150888 Get It

Objective: To compare disease-specific quality of life (QOL) among patients with sporadic vestibular schwannoma (VS) by tumor management strategy using the recently developed and validated Mayo Clinic VSQOL Index relative to established minimal important difference (MID) thresholds. Study design: Cross-sectional cohort. Setting: Acoustic Neuroma Association and tertiary care center. Patients: Adults with sporadic VS. Interventions: Microsurgery, radiation, or observation. Main outcome measures: VSQOL Index scores were compared by tumor management strategy adjusting for age, sex, setting, tumor size at diagnosis, and duration of follow-up. Scores range from 0 to 100; higher scores indicate better QOL. Results: Of the 652 patients included, 333 (51%) were managed with microsurgery, 175 (27%) with radiation, and 144 (22%) with observation. The mean (SD) duration of follow-up was 6.2 (2.7) years. Global QOL adjusted mean scores (95% CI) differed significantly ( P <0.001) by management group: 70 (67-72) for microsurgery, 73 (70-77) for radiation, and 79 (75-83) for observation. Hearing Problems ( P <0.001), Dizziness and Imbalance ( P <0.001), Problems with Face or Eyes ( P <0.001), and Difficulty with Thinking and Memory ( P =0.03) domain scores also differed significantly by group. Pairwise comparisons that exceeded at least the lower bound of published MIDs included Global QOL scores (microsurgery versus observation) and Hearing Problems scores (microsurgery and radiation versus observation). Conclusions: At a mean follow-up of 6.2 years, several notable statistically and clinically significant differences in QOL were identified. These findings may be used to guide patient counseling regarding management options and require validation in future prospective studies.
Association Between Glucagon‐Like Peptide‐1 Receptor Agonists and Suicidality: A Systematic Review
Chan, Timothy H., Leppien, Emily, Sommers, Eleanor J., Lussier, Mia E. , Gionfriddo, Michael R. , Lussier, Mia E , Cosler, Leon E.

Diabetes, Obesity and Metabolism | May 18, 2026 | Volume: 28 | Issue: 8 | Pages: 6482-6508

10.1111/dom.70878 | PMID 42150748 Get It

ABSTRACT Aims We aimed to examine the association between GLP‐1 RA use and suicidal ideation or behaviours through a systematic review of observational studies. Materials and Methods A comprehensive search of MEDLINE, PubMed, EMBASE, CINAHL and PsycINFO was conducted from database inception through December 11, 2025. Observational studies investigating suicidal ideation, suicide attempts or complete suicide among adults using GLP‐1 RAs were included. Eligibility screening, data extraction and risk of bias assessments were performed independently and in duplicate, with disagreements resolved by a third reviewer. Results Forty‐three studies were included. Findings varied by study design. Some case reports suggested a temporal relationship between GLP‐1 RA use and suicidal ideation. Cross‐sectional studies and case–control studies identified a negative association between GLP‐1 RAs and suicide attempts. Pharmacovigilance and cohort studies showed more mixed results, with some studies identifying a positive association between semaglutide or liraglutide and suicidal ideation, while others paradoxically reported a negative association with suicidal behaviours (i.e., attempts and intentional self‐harm) or completed suicide. Conclusions While evidence does not support GLP ‐1 RAs as a causative agent for suicidality, due to multiple risk factors in this population, clinicians should routinely assess mental health status before and during GLP ‐1 RA treatment regardless of indication. Importantly, a history of concurrent mental health conditions should not preclude use of a GLP ‐1 RA ; rather, individual patient factors should be accounted for when making prescribing decisions.
Resolving inflammatory bowel disease risk variants to genes and cell types
Zhang, Rui, Gettler, Kyle , Haritunians, Talin , Cleynen, Isabelle , Stevens, Christine R , Zhang, Qian , Tastad, Christopher, Medici, Catalina, Abreu, María T. , Achkar, Jean-Paul, Ahmad, Tariq, Bernstein, Charles, Brooks, Johanne , Bujanda, Luis, Butterworth, Jeffrey, Clark, Katie, Cummings, F, Buono, Joanne Del, Foley, Stephen, Franchimont, Denis , Hancock, L, Hart, Ailsa, Hooper, Patricia, Jarvis, Mark , Johnston, EL, Kemp, Cheryl, Kennedy, Nick, Lewis, James D. , Li, Andy, Louis, Édouard , Moayyedi, Paul, Moran, G , Newman, Bill, Oglesby, Arabis, Pekow, Joel, Perez, Kate J., Pollok, R, Radford-Smith, Graham , Raffals, L, Raine, Tim, Ramadas, Arvind, Ramakrishnan, S., Reinisch, Walter , Satsangi, Jack, Selinger, Christian, Shedwell, Sophy, Silverberg, Mark S. , Singh, Salil, Steel, Alan, Uhlig, Holm H. , Verma, Ajay, Weersma, Rinse K. , Xavier, Ramnik, Parkes, M, Lee, James C. , McGovern, D, Anderson, Carl A. , Lee, James , Raine, Tim , Zhang, Rui , Haritunians, Talin , Raine, Tim , Anderson, Carl A , Fachal, Laura , Cleynen, Isabelle , Stevens, Christine R. , Zhang, Qian , Tastad, Christopher , Do, Ron , Achkar, Jean–Paul , Ahmad, Tariq , Kok, Klaartje Bel , Butterworth, Jeffrey R., Cummings, Fraser , D’Amato, Mauro , Duerr, Richard H , Ellinghaus, David , Franchimont, Denis , Franke, André , Hart, Ailsa , Hooper, Patricia, Irving, Peter Miles , Julià, Antonio , Kennedy, Nicholas Alexander , Kupcinskas, Juozas , Latiano, Anna , Lewis, James D , McLaughlin, John , Moayyedi, Paul , Mowat, Craig , Newberry, Rodney D. , Perez, Kate J, Prescott, Natalie , Radford‐Smith, Graham L , Raffals, Laura E. , Reinisch, Walter , Rogler, Gerhard , Sands, Bruce E , Satsangi, Jack, Scharl, Michael , Schreiber, Stefan , Sebastian, Shaji , Selinger, Christian P. , Steed, Helen , Vermeire, Séverine , Halfvarson, Jonas , Daly, Mark J. , Lamb, Christopher A , Huang, Hailiang , McGovern, Dermot P.B. , Rioux, John D. , Cho, Judy H , Zhang, Rui

No container title available | May 18, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.64898/2026.05.13.26352926 Get It

Abstract Inflammatory bowel diseases (IBD), principally Crohn’s disease (CD) and ulcerative colitis (UC), are common chronic disorders involving inflammation and often progressive tissue damage. Genome-wide association studies have mapped many risk signals, but the causal variants, effector genes and relevant cellular contexts remain difficult to resolve, limiting mechanistic interpretation and therapeutic translation. Here we performed a multi-ancestry GWAS meta-analysis of 125,992 individuals with IBD and more than 1.2 million controls, identifying 619 independent association signals (374 novel) at 420 IBD regions that account for 77–80% of SNP-based heritability. Fine-mapping resolved 81 high-confidence variants, 41 not previously reported. Although most signals were shared between CD and UC, 39% showed IBD subtype specificity, with UC signals showing stronger enrichment in functional annotations from intestinal epithelial, secretory and enteroendocrine cells, and CD showing stronger genetic correlations with circulating inflammatory biomarkers, including C-reactive protein and glycoprotein acetylation. Latent causal modelling supported a causal effect of decreased high-density lipoprotein on CD risk. By integrating bulk and single-cell eQTL and pQTL resources using colocalisation and Mendelian randomisation, together with coding-variant evidence from exome sequencing, we prioritised 664 candidate effector genes across 341 signals, including 390 newly implicated IBD genes, revealing new biological mechanisms and candidate therapeutic targets supported by human genetics.
C66-09 Quantitative Analysis and Comparison of Chest Computed Tomography in Portopulmonary Hypertension, Hepatopulmonary Syndrome, and Portal Hypertension
Karanam, V, Dubrock, H M, Hassanzadeh, S, Krowka, M J, Hahn, L, Karanam, V., DuBrock, Hilary M. , Krowka, Michael J. , Hahn, Lewis D.

American Journal of Respiratory and Critical Care Medicine | May 18, 2026 | Volume: 212 | Issue: Supplement_1 | Pages: No page available

10.1093/ajrccm/aamag162.5855 Get It

Abstract Rationale Portopulmonary hypertension (POPH) and hepatopulmonary syndrome (HPS) are two distinct pulmonary vascular complications of liver disease. POPH is characterized by pulmonary hypertension and elevated pulmonary vascular resistance while HPS is characterized by intrapulmonary vasodilation and hypoxemia. POPH and HPS reflect opposing pulmonary vascular responses with markedly different therapeutic and transplant implications. Accurate distinction on imaging may aid clinical decision-making and risk stratification. We aimed to quantitatively characterize and compare chest CT imaging features of POPH and HPS compared to controls with isolated portal hypertension (PoH). Methods Three cohorts of HPS, POPH, and PoH were included (n = 5 per cohort). POPH patients with intrapulmonary vasodilation on contrast echocardiography were excluded. Contrast-enhanced chest CTs with slice thickness ≤ 1.5mm obtained closest to the time of diagnosis were selected (mean 2.7 years following diagnosis). CT images were analyzed using a deep learning algorithm developed in-house that segmented and computed volumes of central, interlobar, peripheral, upper peripheral, and lower peripheral pulmonary arteries (PAs); total, upper, and lower pulmonary veins (PVs); and the four cardiac chambers. Resulting volumes were indexed by body-surface area. One-way analysis of variance (ANOVA) was performed with a post-hoc pairwise Mann-Whitney U test for comparison. Results Patients with HPS were 80% male, had a mean age of 48.6±17.4, and mean MELD-Na of 15.4±3.4. The POPH cohort was 20% male, had a mean age of 56.8±11.9, and mean MELD-Na of 13.4±4.0. The PoH cohort was 100% male, had a mean age of 62.8±4.8, and mean MELD-Na of 12.8±8.8. HPS patients had smaller central PA volumes (mean 26.4±1.8 mm2/m2) compared to both PoH (mean 38.6±9.8 mm2/m2, p = 0.03) and POPH patients (44.8±10.8 mm2/m2, p = 0.008). HPS patients, however, had larger lower peripheral PA (mean 30.7±1.9 mm2/m2) and PV (mean 28.3±6.7 mm2/m2) volumes compared to PoH (PAs mean 20.1±4.8 mm2/m2, p = 0.008; PVs mean 18.2±2.8 mm2/m2, p = 0.02) and larger lower peripheral PA volumes compared to POPH patients (PAs mean 22.1±5.1 mm2/m2, p = 0.03). There was no significant difference in volumes between POPH and PoH for all segments. Conclusion Compared to PoH and POPH, HPS is associated with lower central PA volume and higher peripheral PA volume in the lower lungs. Volumes were similar between POPH and PoH; however, this may reflect limited statistical power given the small sample size. Larger studies are needed to further delineate imaging distinctions between POPH, HPS, and PoH. This abstract is funded by: NHLBI
B106-23 A Real-world Registry of Sotatercept in Pulmonary Arterial Hypertension: The Mayo Clinic Experience
Dubrock, H M, Valle, K T Del, Cajigas, H R, Anand, V, Kane, G C, Krowka, M J, Kushwaha, S, McCully, R B, Mielniczuk, L , Murphy, J G, Reddy, Y N V, Frantz, R P, DuBrock, Hilary M. , Cajigas, Héctor , Anand, Vidhu , Kane, Garvan C. , Krowka, Michael J. , McCully, Robert B. , Murphy, Joseph G. , Reddy, Yogesh N.V. , Frantz, Robert P.

American Journal of Respiratory and Critical Care Medicine | May 18, 2026 | Volume: 212 | Issue: Supplement_1 | Pages: No page available

10.1093/ajrccm/aamag162.5753 Get It

Abstract Rationale Sotatercept is a novel activin signaling inhibitor approved for the treatment of pulmonary arterial hypertension (PAH). Sotatercept has been studied in randomized clinical trials, but little is known regarding the real-world use of sotatercept. We sought to describe the safety, tolerability and efficacy of sotatercept in our clinical practice. Methods We performed a combined prospective and retrospective cohort study of all patients treated with sotatercept at Mayo Clinic Rochester since its approval in March 2024. Patients enrolled in a separate clinical trial of sotatercept were excluded from this analysis as their data will be reported separately. Clinical data was abstracted from the electronic health record. Follow-up data was collected at 6 ± 3 months after initiation of sotatercept. Data is summarized as n (%) and mean ± SD. We used paired t-tests to compare baseline and follow-up characteristics within individuals. Results Fifty-eight PAH patients treated with sotatercept were included. Patients were 48.4 ± 37.6 years old at treatment initiation and were predominantly female with a mean duration of PAH of 6.7 years and a range of PAH etiologies including portopulmonary hypertension, congenital heart disease, and pulmonary veno-occlusive disease (Table 1). Twenty-one (36%) of patients had mixed etiologies of PH. Six months after initiation of sotatercept, patients had a significant improvement in NTproBNP (1922 ± 4464 to 363 ± 596 pg/ml, p = 0.04), 6 minute walk distance (378.8 ±144.6 to 395.7±129.5 meters, p = 0.02) and right ventricular systolic pressure (74.6 ± 20.5 to 60.6 ± 20.3 mm Hg, p &lt; 0.001). No patients permanently discontinued due to abnormal laboratory values. Mean highest hemoglobin achieved over the initial 6 months of treatment was 15.5 ± 2.1 g/dL and mean lowest platelet count was 181 ± 74K. Seven patients discontinued sotatercept at a range of 170-275 days after starting. Four patients discontinued due to possible treatment-related adverse effects: 1 each of gastrointestinal hemorrhage, retinal hemorrhage, hypoxia/intrapulmonary vasodilatation and spontaneous bilateral subdural hematomas. Three patients discontinued due to other reasons: newly diagnosed metastatic cancer leading to transition to hospice and two due to lack of improvement. Conclusions In this real-world registry of sotatercept in PAH, sotatercept was well-tolerated among patients with PAH and associated with improvements in exercise capacity, echocardiographic parameters, and NTproBNP. Overall discontinuation due to possible treatment-related adverse effects was low and reasons for discontinuation included bleeding and hypoxia attributed to intrapulmonary vasodilatation. This abstract is funded by: None