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1521 citation(s) found for "Ma, Rachel".

Tracking seizure cycles beats a prospective moving average: Commentary on "Rigorous evaluation of five e‐diary alone seizure forecasting tools"
Stirling, Rachel E. , Brinkmann, Benjamin H. , Freestone, Dean R. , Karoly, Philippa J, Karoly, Phillipa J , Brinkmann, Benjamin H , Freestone, Dean R , Stirling, Rachel E , Karoly, Philippa J.

Epilepsia | December 31, 2025 | Volume: 67 | Issue: 4 | Pages: 1582-1586

10.1002/epi.70084 | PMID 41474376 Get It

Abstract There is debate on the predictive value of multiday seizure cycles versus simple statistical baselines. Multidien seizure cyclicity is a prevalent, patient‐specific phenomenon with promise for epilepsy management. We challenge the assertion that cycle tracking is no better than a moving average, which is an inherently retrospective model that lags changes in seizure likelihood. This commentary compared a causal cyclic forecast to a prospectively applied moving average across a large seizure diary cohort ( n = 768) and two gold‐standard chronic EEG cohorts ( n = 24). For the EEG and diary cohorts, cycle tracking demonstrated significantly superior accuracy to the moving average for both hourly and daily forecasts ( p < 0.0001), using multiple performance metrics. These results confirm that event‐based cyclical models offer more accurate, simulated real‐world forecasts. Robust forecasting tools must prioritize the detection and modeling of seizure cycles to move beyond simple baseline performance and provide actionable clinical utility.
Skin Biopsy for Phosphorylated α‐Synuclein in Mild Cognitive Impairment or Dementia Due to Lewy Body Disease in a Convenience Cohort from a Subspecialty Behavioral Neurology Practice
Botha, Hugo, Barnard, Leland R , Reichard, R. Ross, Larsen, Rachel A. , Cogan, Wendy, Switzer, Aaron , Ramanan, Vijay K., Neth, Bryan J. , Townley, Ryan , Savica, Rodolfo , Jones, D., Miyagawa, Toji , Fields, Julie A. , Vernon, Cynthia J. , Trottier, Zachary A., Lowe, Val J. , Knopman, David S., Petersen, Ronald C., Dickson, Dennis W., Kantarci, Kejal, Graff‐Radford, Jonathan, Boeve, B. F., Kantarci, Kejal , Rigby, Michael J. , Larsen, Rachel, Savica, Rodolfo , Miyagawa, Toji , St Louis, E K , Kantarci, Kejal , Graff-Radford, Jonathan , McCarter, Stuart J , Neth, Byran J. , Switzer, Aaron R , Botha, Hugo , Reichard, R. Ross , Ramanan, Vijay K. , Jones, David T. , Vernon, Cynthia, Trottier, Zachary, Louis, Erik K. St. , Knopman, David S. , Petersen, Ronald C. , Graff‐Radford, Jonathan , McCarter, Stuart J.

Movement Disorders | December 29, 2025 | Volume: 41 | Issue: 4 | Pages: 962-971

10.1002/mds.70158 | PMID 41459992 Get It

Abstract Background Immunohistochemically detected phosphorylated α‐synuclein (p‐α‐syn) in cutaneous nerves has been found in >95% of patients meeting consensus criteria for dementia with Lewy bodies (DLB); however, its performance in prodromal stages (mild cognitive impairment‐Lewy body [MCI‐LB]) and clinical practice is unknown. Objective We evaluated skin biopsy for p‐α‐syn in a convenience cohort of patients with suspected MCI‐LB or DLB in a tertiary care setting. Methods 53 patients underwent commercially available skin biopsy for skin nerve p‐α‐syn as part of a clinical evaluation for suspected MCI‐LB/DLB. Consensus MCI‐LB/DLB criteria blinded to skin biopsy result were applied through retrospective chart review; those not definitively meeting criteria were considered questionable synucleinopathy (QS). Results Median age at skin biopsy was 70 years (range, 43–87 years) with 81% men. 36 patients (68%) had positive skin biopsies. 32/43 (74%) patients meeting clinical consensus criteria for DLB/MCI‐LB had a positive skin biopsy, with higher frequency in MCI‐LB (87%) compared with DLB (60%). 4/10 (40%) QS had positive biopsies. One patient with a positive skin biopsy had no evidence of central nervous system (CNS) α‐syn on autopsy. Conclusions Positive skin biopsy for p‐α‐syn occurs across the spectrum of cognitive presentations of Lewy body disease including prodromal DLB, albeit at a lower frequency in this retrospective review of atypical cases compared with typical clinical presentations. A positive skin biopsy may not reflect CNS synucleinopathy as the etiology for a patient's symptoms in some cases. Longitudinal studies of skin biopsies for p‐α‐syn in suspected MCI‐LB/DLB with autopsy confirmation are needed. © 2025 International Parkinson and Movement Disorder Society.
Whole Blood Gene Expression Network Expression Strongly Relates to Plasma pTau217 Levels
Janve, Vaibhav A, Seto, Mabel, Klinger, Hannah M , Brown, Jane A. , Sperling, R., Aisen, Paul S., Koran, Mary Ellen I. , Group, A4 and LEARN Study, Janve, Vaibhav A. , Seto, Mabel , Sperling, Reisa Anne , Aisen, Paul S., Rissman, Robert A. , Dumitrescu, Logan , Buckley, Rachel F. , Hohman, Timothy J.

Alzheimer's & Dementia | December 24, 2025 | Volume: 21 | Issue: S1 | Pages: No page available

10.1002/alz70855_101170 Get It

Abstract Background pTau217 is a well validated plasma biomarker for Alzheimer's disease (AD), sensitive to the accumulation of amyloid pathology in the preclinical stages of disease. We leveraged whole blood RNA sequencing and plasma pTau217 measures of amyloid burden to identify blood transcriptomic gene‐network changes that relate to plasma pTau217 levels in cognitively normal older adults. We then quantified the abundance of cell populations from the transcriptomic data to identify blood cell abundance alterations that correlate with plasma ptau217 levels. Method Whole blood RNA sequencing and plasma pTau217 data were obtained from 1739 participants in the Anti‐Amyloid Treatment in Asymptomatic Alzheimer's Disease (A4) Study. RNAseq data were aligned, sorted, counted, batch normalized, and iteratively adjusted for covariates. 20,718 genes were available for analysis following quality control. Plasma samples ( n = 1597) were analyzed for pTau217 using the Eli Lilly and Company Diagnostics Laboratory immunoassay. Samples from 724 participants (63% females, mean age 71, 61% amyloid+) with RNA sequencing and biomarker data were used for analysis. Cell fractions were quantified using CIBERSORTx (LM22 used as reference) and WGCNA was used to calculate gene co‐expression modules. Linear regression related gene module expression or cell fraction to mean pTau217 levels covarying for age, sex, education, APOE ε2 and ε4 status. Correction for multiple comparisons used the false discovery rate. Gene enrichment was performed using Gene Ontology. Result Five gene modules were associated with plasma pTau217. For the turquoise module (β=‐0.81, p.fdr=0.005), higher expression was associated with higher p ‐tau217 while higher expression in the blue (β=‐0.70, p.fdr=0.01), lightcyan (β=‐0.68, p.fdr=0.01), grey60 (β=‐0.64, p.fdr=0.02), and brown (β=‐0.55, p.fdr=0.04) modules were associated with lower p ‐tau217. These modules were enriched for phagocytosis, ribonucleoprotein complex biogenesis, immunoglobulin mediated immune response, nucleosome assembly, and cytoplasmic translation pathway genes. In cell fraction analysis, higher predicted abundance of neutrophils related to ptau217 levels (β=0.33, p.fdr=0.03). Conclusion Our results demonstrate an association between immune response and epigenetic pathway genes with plasma pTau217 levels in preclinical AD. Future work will seek to clarify whether these signatures also relate to brain amyloid PET to evaluate blood transcription networks as complementary biomarkers to improve preclinical prediction.
Palliative Care Staff Attitudes Toward Music Therapy for Hospitalized Adult Patients
Carney, Kim , Wiste, Rachel M., Cutshall, Susanne M. , Wood, Christina M., Gentes, Rachel C., Larsen, Brianna E. , Tiwaa, Nana A. , Tetlie, Amelia E., Mackey, Regina M. , Carney, Katherine A , Wood, Christina

American Journal of Hospice and Palliative Medicine® | December 18, 2025 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1177/10499091251407097 | PMID 41408945 Get It

Purpose There is emerging evidence that music therapy (MT) is an effective tool within palliative care to manage patients’ complex needs. This performance improvement project aimed to assess palliative care staff members’ attitudes toward the current utilization of MT within the institution’s hospital-based interdisciplinary practices. Methods Eighty-four staff members practicing within hospital-based palliative care teams were invited to complete a voluntary anonymous mixed methods survey about their impressions of current MT integration. Survey questions inquired about reasons for MT referral, most common pertinent symptoms, perceived benefit to patients, future suggestions for growth, unexpected experiences, and perceived personal benefit to staff. Major Findings Fifty-one staff members (61%) responded. Top reasons for MT referral were psychosocial support, pain and symptom management, and coping. The most common symptom-focused indications were anxiety, mood, and existential distress. A variety of factors influenced decisions to refer for MT. Most felt that at least half of their patients could benefit from MT, and nearly all rated MT as “extremely” or “very” effective for improving patients’ quality of life. Suggestions for potential growth for MT in palliative care in the future centered on themes of greater availability, increased variety and collaboration, research opportunities, and staff members’ desire to receive more exposure to MT. Conclusions In this single-institution performance improvement project, staff attitudes were highly favorable toward MT for palliative care patients. MT is utilized for a variety of reasons, can be highly effective for improving patients’ quality of life, and may also be of direct benefit to staff.
Cervical Cancer, Version 2.2026, NCCN Clinical Practice Guidelines In Oncology
Abu‐Rustum, Nadeem R. , Campos, Susana M. , Amarnath, Sudha, Barber, Emma L. , Bradley, Kristin , Brooks, Rebecca , Chon, Hye Sook, Damast, Shari , Fisher, Christine M. , Frederick, Peter J., Gaffney, David K. , Giuntoli, Robert , Glaser, Scott , Howitt, Brooke E. , Kendra, Kari , Landrum, Lisa M. , Mantia-Smaldone, Gina , Mariani, Andrea , Nagel, Christa , Nieto, Karina , Nwachukwu, Chika , Podoll, Mirna, Rodabaugh, Kerry J. , Salani, Ritu , Schorge, John O., Schuetze, Scott M. , Siedel, Jean , Sisodia, Rachel , Soliman, Pamela T. , Ueda, Stefanie , Urban, Renata R. , Wyse, Emily , McMillian, Nicole R., Arend, Rebecca C. , Chino, Junzo , Crispens, Marta Ann , Gaillard, Stéphanie , Lea, Jayanthi Sivasothy , Lee, Nita Karnik , Mutch, David G. , Nekhlyudov, Larissa , Sambandam, Vaishnavi

Journal of the National Comprehensive Cancer Network | December 17, 2025 | Volume: 23 | Issue: 12 | Pages: 549-573

10.6004/jnccn.2025.0057 | PMID 41671440 Get It

The NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines) for Cervical Cancer provide diagnostic workup, staging, and various treatment recommendations for cervical cancer based on clinical and surgical staging. This selection from the NCCN Guidelines for cervical cancer specifically focuses on diagnosis and workup, principles of staging and surgery, and primary treatment recommendations for early-stage and advanced disease and provides a detailed overview of systemic therapy recommendations for cervical cancer.
Comparison of clinical, radiographic and genomic alterations between histologic and molecular glioblastoma, IDH -wildtype
Lachance, Daniel H , Decker, Paul A. , Kosel, Matthew , Odukoya, AbdulLateef, Maqbool, Muhammad Asad , Jenkins, Robert B. , Eckel‐Passow, Jeanette E. , Odukoya, Lateef A , Kollmeyer, Thomas M. , Praska, Corinne E, Odukoya, AbdulLateef A, Tobin, William Oliver, Galanis, Evanthia , Giannini, Caterina , Vaubel, Rachel A, Ida, Cris M, Jenkins, RB , Eckel-Passow, Jeanette E , Odukoya, Lateef A , Lachance, Daniel , Decker, Paul A. , Drucker, Kristen , Praska, Corinne , Kizilbash, Sani H. , Shafqat, Shameel , Tobin, W. Oliver , Parney, Ian F. , Burns, Terry C. , Galanis, Evanthia , Giannini, Caterina , Vaubel, Rachael A. , Ida, Cristiane M.

Neuro-Oncology Advances | December 16, 2025 | Volume: 8 | Issue: 1 | Pages: No page available

10.1093/noajnl/vdaf260 | PMID 41908146 Get It

Abstract Background Glioblastoma IDH-wildtype (GBM) may be diagnosed histologically (hGBM) or based on molecular features when microvascular proliferation and histologic necrosis are absent (mGBM). Clinical and radiographic distinction between hGBM and mGBM remains unclear. Methods 101 hGBM cases were matched to 109 mGBM cases by age, sex, year of diagnosis, and TERT promoter mutation (TERTp) status. Clinical outcome, radiographic, and molecular features were compared across mGBM and hGBM. Results Median time from first MRI to diagnosis was longer for mGBM versus hGBM (34 vs 7 days, p &lt; .001). mGBM more often presented with seizures (51% vs 26%, p &lt; .001), gliomatosis pattern (12% vs 2%, p = .005), basal ganglia involvement (17% vs 0%, p &lt; .001). Contrast enhancement appeared on MRI for 98% (96/98) of hGBM and 50% (54/107) of mGBM (p &lt; .001). mGBM with non-enhancing MRI were rarely multifocal (2% vs 30%, p &lt; .001). mGBM harbored fewer total copy number alterations (median 20 vs 16.5, p = .029), less often had EGFRamp (34% vs 48%, p = .051), isolated chromosome 10 loss (84% vs 96%, p = .013), and CDKN2A/B homozygous deletion (56% vs 77%, p = .005). Median overall survival was longer for mGBM (2.16 vs 1.44 years, p &lt; .001), and for mGBM without MRI contrast enhancement versus hGBM with enhancement (3.11 vs 1.62 years, adjusted p = .003). mGBM without +7/−10 or without CDKN2A/B homozygous deletion had longer survival and time-to-progression versus hGBM with these alterations. Conclusion mGBM with MRI enhancement may represent undersampled or early/evolving hGBM. mGBM that are non-enhancing, present with seizures, prolonged time to diagnosis, absent CDKN2A/B alteration or +7/−10 may represent other IDH-wildtype entities.
Calibration of Flow Cytometers Enables Reproducible Measurements of Extracellular Vesicle Concentrations and Reference Range Establishment
Bettin, Britta , Li, Bo , Falkena, Kim, Leeuwen, Ton G. van , Gollwitzer, Christian , Varga, Zoltán , Antović, Jovan P. , Berckmans, Pascale , Buzás, Edit I. , Cook, Sean, Dignat‐George, Françoise , Lacroix, Romaric , Maaninka, Katariina , Menezes, Erika G. Marques de , Meyer, Annette, Mizenko, Rachel R. , Nelissen, Inge , Norris, Philip J. , Pink, Desmond , Poudel, Sumeet , Robert, Stéphane, Siljander, Pia , Tang, Vera A. , Broeck, Tina Van Den, Bettin, Britta A , van Leeuwen, Ton G , Ajzenberg, Nadine , Berckmans, Pascale , Buzas, Edit I , Carney, Randy P , Dignat-George, Françoise , Faille, Dorothee , Giebel, Bernd , Jones, Jennifer C , Lacroix, Romaric , Lannigan, Joanne , Lucien, Fabrice , Maaninka, Katariina , de Menezes, Erika G Marques , Mizenko, Rachel R , Nelissen, Inge , Pink, Desmond , Poudel, Sumeet , Siljander, Pia R-M , Tang, Vera A , Tertel, Tobias , Wang, Lili , Welsh, Joshua A , Nieuwland, Rienk , van der Pol, Edwin , Cook, Sean M, Giebel, Bernd , Jones, Jennifer , Kim, Yohan , Lucien, Fabrice , Meyer, Annette, Nolan, John, Welsh, Joshua A , Nieuwland, Rienk

Journal of Extracellular Vesicles | December 15, 2025 | Volume: 14 | Issue: 12 | Pages: No page available

10.1002/jev2.70189 | PMID 41392534 Get It

ABSTRACT The concentration of cells is a key component of modern blood tests. Given the biomarker potential of extracellular vesicles (EVs) in blood, we aimed to establish reference ranges for blood cell‐derived EVs using flow cytometry. To address the orders‐of‐magnitude variability in reported EV concentrations between different flow cytometers (FCMs), we first validated a calibration methodology to enable reproducible EV concentration measurements. The methodology was evaluated in an interlaboratory comparison study and shows that calibration reduces the median absolute deviation of EV concentrations measured on 25 different FCMs from 67 % to 25 %–31 %. The calibration methodology was then used to determine reference ranges of erythrocyte‐, leukocyte‐, and platelet‐derived EVs in human blood plasma in a cohort of healthy individuals ( n = 224). This study demonstrates that calibration enables comparable concentration measurements of blood cell‐derived EVs, thereby bringing EVs one step closer to clinical applications.
Management of Cancer During Pregnancy: ASCO Guideline
Loren, Alison W. , Lacchetti, Christina , Amant, Frédéric , Carey, Lisa A. , Christian, Nicole , Clark, Caroline C. , Dizon, Don S. , Hudson, Melissa M. , Maués, Julia , Peterson, Erika, Prowell, Tatiana M. , Raab, Rachel, Saeed, Hina , Watson, Katie, Yadav, Siddhartha , Carey, Lisa A , Christian, Nicole , Clark, Caroline , Dizon, Don S , Henry, Melissa , Hudson, Melissa M , Maues, Julia , Prowell, Tatiana M , Rogers, Jane E , Sekeres, Mikkael A , Taylor, Jolyn S , Van Loon, Katherine , Wallace, W Hamish , Yadav, Siddhartha , Partridge, Ann H , Amant, Frederic , Cardonick, Elyce H. , Rogers, Jane E. , Sekeres, Mikkael A. , Loon, Katherine Van , Partridge, Ann H.

Journal of Clinical Oncology | December 11, 2025 | Volume: 44 | Issue: 3 | Pages: 200-251

10.1200/jco-25-02115 | PMID 41380115 Get It

ASCO Guidelines provide recommendations with comprehensive review and analyses of the relevant literature for each recommendation, following the guideline development process as outlined in the ASCO Guidelines Methodology Manual . ASCO Guidelines follow the ASCO Conflict of Interest Policy for Clinical Practice Guidelines . Clinical Practice Guidelines and other guidance (“Guidance”) provided by ASCO is not a comprehensive or definitive guide to treatment options. It is intended for voluntary use by clinicians and should be used in conjunction with independent professional judgment. Guidance may not be applicable to all patients, interventions, diseases or stages of diseases. Guidance is based on review and analysis of relevant literature, and is not intended as a statement of the standard of care. ASCO does not endorse third-party drugs, devices, services, or therapies and assumes no responsibility for any harm arising from or related to the use of this information. See complete disclaimer in Appendix 1 and Appendix 2 (online only) for more. PURPOSE To provide guidance on the recommended management of cancer in pregnant patients. METHODS A multidisciplinary Expert Panel convened and conducted a systematic review of the literature. RESULTS The systematic review identified 450 eligible studies. Much of the evidence consisted of observational data, case series, and case reports. RECOMMENDATIONS Management of cancer during pregnancy should be grounded in a values-based informed-consent process outlining maternal and fetal risks and anticipated benefits. Diagnostic evaluation should follow the as low as reasonably achievable (ALARA) principle, with timing of diagnostic studies individualized based on urgency of cancer detection, potential dangers of delay, and the balance of risks to both the pregnant patient and her embryo or fetus. Due to significant risk of harm to the developing embryo and/or fetus, systemic therapy should be deferred until the second trimester. Methotrexate, hormonal therapies, human epidermal growth factor receptor 2–targeted agents, vascular endothelial growth factor and poly (ADP-ribose) polymerase inhibitors, antibody-drug conjugates, and all cellular therapies are contraindicated during pregnancy, regardless of gestational age. For patients who wish to continue their pregnancy, delivery should be planned at or after 37 weeks, with the final chemotherapy dose scheduled 2-4 weeks before birth. Referral to psychosocial support services is essential to address emotional and practical challenges, reduce distress, and support shared decision making. Additional information is available at www.asco.org/survivorship-guidelines .
Progression of disease within 36 months (POD36) of starting first-line targeted therapy independently predicts poor overall survival in patients with chronic lymphocytic leukemia (CLL)
Hampel, Paul J. , Leis, José F., Koehler, Amber B. , Bailen, Rachel, Coddington, Catherine, Behnken, Amy, Schwager, Susan M., Hanson, Curtis A. , Mendoza, Cinthya, Rabe, Kari G. , Maurer, Matthew J. , Wang, Yucai , Kenderian, Saad S. , Muchtar, Eli , Roeker, Lindsey E. , Tsang, Mazie , Hilal, Talal , Parrondo, Ricardo D , Coddington, Catherine, Braggio, Esteban , Shi, Min , Slager, Susan L. , Kay, Neil E. , Parikh, Sameer A.

Blood | December 5, 2025 | Volume: 146 | Issue: Supplement 1 | Pages: 5667-5667

10.1182/blood-2025-5667 Get It

Abstract BACKGROUND Early disease progression within 24 months following chemoimmunotherapy (CIT) is an established adverse prognostic factor for overall survival (OS) in patients (pts) with indolent non-Hodgkin lymphomas. Initially reported in pts with follicular lymphoma, progression of disease (PD) within 24 months in pts with CLL treated with CIT (occurring in ~1-out-of-4 pts) is also associated with inferior OS. The prognostic utility of early event status in pts with CLL treated with targeted therapies is unknown. Recently, we reported worse than expected outcomes with BCL2 inhibitor (BCL2i) treatments in an international cohort of pts with covalent BTK inhibitor (BTKi)-resistant, CIT-naïve CLL. We hypothesize that early disease progression on first-line (1L) targeted agent treatment will identify additional pts with high-risk disease beyond conventional prognostics in the current era. METHODS We identified pts in the Mayo Clinic CLL Database with the following 1L treatments a) BTKi (+/- anti-CD20 monoclonal antibody [CD20mAb]); b) BCL2i + CD20mAb; c) BTKi + BCL2i +/- CD20mAb. PD was defined by a) new or progressive lymphadenopathy or splenomegaly; and/or b) ≥ 50% increase from nadir absolute lymphocyte count (ALC) with persistent (&gt;2 months), and otherwise unexplained ALC ≥ 10x109/L; and/or c) Richter transformation. Logistic regression model evaluated association between clinical factors and POD36 status. OS in pts with PD within 36 months of 1L start (POD36) was evaluated and compared to those without early PD (non-POD36) with analyses: a) starting from time of PD (POD36) and starting from 3 years after 1L initiation (non-POD36); and b) Kaplan-Meier landmark analysis amongst pts alive 3 years post 1L initiation. Cox regression analyses compared a) OS from POD36 by groups and b) OS from 1L treatment with POD36 as a time-dependent covariate. RESULTS A total of 787 pts with CLL initiated 1L targeted therapy (n=538 [68%] BTKi +/- CD20mAb; n=151 [19%] BCL2i + CD20mAb; n=98 [13%] BTKi + BCL2i +/- CD20mAb. The median age at 1L start was 67 years (range 26-92 years), and 67% of pts were male. Among pts with complete CLL-IPI data (n=519), 44% and 15% had high- and very high-risk CLL-IPI risk scores, respectively. Specific pre-1L treatment disease characteristics included TP53 disruption (del17p or TP53 mutation) in 120/639 (19%), del11q in 103/634 (16%), unmutated IGHV in 406/591 (69%), complex karyotype (≥3 clonal structural or numerical abnormalities on karyotype) in 70/273 (26%), and positive CD49d expression in 229/449 (46%). The median pre-treatment beta-2-microglobulin level was 3.3 mcg/mL (range 1.2-24.4 mcg/mL). The median follow-up from 1L start was 50 months (95% CI 46-54 months). 496 pts met criteria for defining POD36 status; 72 (15%) had PD, and 424 did not. TP53 disruption (OR 2.9; 95% CI 1.5-5.7, P=0.001) was associated with POD36 on univariate analysis; complex karyotype, unmutated IGHV status, elevated serum lactate dehydrogenase level, age, sex, and inclusion of CD20mAb were not associated with POD36 status. Median OS from the time of determination of POD36 status was not reached. OS was significantly shorter after POD36 compared to non-POD36 pts (HR 3.5; 95%CI 2.1-6.0, P&lt;0.0001), with 4-year OS estimates of 65% and 88%, respectively. When assessed by landmark analysis at the 3-year timepoint following 1L start (n=50 POD36), OS was also shorter in pts with POD36 compared to non-POD36 pts (HR 3.5; 95%CI 1.8-6.8, P=0.0002). In the overall cohort (n=787), when evaluating OS from 1L treatment with POD36 as a time-dependent covariate, POD36 status was associated with an increased risk of death (HR 4.3; 95% CI 2.6-7.1, P&lt;0.0001) on univariable analysis; and remained an independent marker of shorter OS in multivariable analyses after adjusting for age, sex, TP53 disruption status, and IGHV status (HR 4.2; 95% CI 2.1-8.4, P&lt;0.0001). CONCLUSIONMost pts achieved durable CLL disease control with 1L targeted treatments, and early PD occurs much less frequently than previously reported with CIT. However, among pts who receive 1L targeted therapies for CLL, PD within 36 months is associated with a ~4-fold higher risk of death. These results, if validated in larger data sets, will provide a practical measure for identifying a high-risk subgroup of pts in need of novel treatment strategies in future trials.
Anti-platelet factor 4 antibodies in MGUS-related thrombosis
Kanack, Adam J. , Splinter, Noah P., Mauch, Emily, Leger, Rachel, Shah, Surbhi , Kumar, Shaji , Pruthi, Rajiv K. , Padmanabhan, Anand , Houghton, Damon E. , Dispenzieri, Angela , Chen, Dong

Blood | December 5, 2025 | Volume: 146 | Issue: Supplement 1 | Pages: 1321-1321

10.1182/blood-2025-1321 Get It

Abstract Introduction: Monoclonal gammopathy of thrombotic significance (MGTS) is a recently recognized thrombophilia where monoclonal platelet factor 4 (PF4)-specific IgG antibodies initiate a chronic prothrombotic state characterized by recurrent and potentially life-threatening thrombosis. Studies from large data sets demonstrate that patients with monoclonal gammopathy of undetermined significance (MGUS) have a heightened risk of experiencing thromboembolic events without a precise explanatory mechanism. The prevalence of MGTS in MGUS-related thrombosis is unknown; however, the recent identification of MGTS antibodies as a cause of thrombosis suggests a potentially causative mechanism. Emerging evidence indicates that detecting pathogenic MGTS antibodies presents diagnostic challenges due to the insensitivity of FDA-approved diagnostic assays adopted from HIT (HIT ELISAs) and gold-standard functional tests that use heparin-treated platelets, such as the serotonin release assay (SRA). Only PF4-enhanced functional assays, including the PF4-dependent P-selectin expression assay (PEA) and PF4-SRA, have proven sensitive for detecting MGTS antibodies. In this study, the PEA was utilized to better define the incidence of pathogenic anti-PF4 antibodies among a cohort of MGUS patients with a history of thrombosis. Methods: A search of the Mayo Clinic Dysproteinemia Bank was conducted to identify two cohorts of IgG MGUS patients, one with venous thromboembolism-associated diagnosis code(s) and the other without. A diagnosis of multiple myeloma was exclusionary. Each serum sample was assessed using the PEA. Mayo Clinic's Institutional Review Board approved the research study. Results: Among the 134 patients studied in the thrombosis cohort, 17 (13%) stimulated platelet activation in the PEA (positive cut-off ≥19%), some weakly. Of these, four patients (Patients 1-4) were confirmed to have PF4-dependent platelet-activating antibodies inhibitable with high concentrations of heparin and sensitive to blockade of the IgG receptor on platelets, FcGRIIa. The thrombotic complications experienced included recurrent deep venous thrombosis (DVT) over several years (Patient 1), a single DVT (Patient 2), a thrombotic cerebrovascular accident (CVA) (Patient 3), and a series of thrombotic events, including DVTs, left atrial thrombosis, pulmonary embolism, and acute limb ischemia (Patient 4). Notably, longitudinal samples spanning twelve years (Patient 1), six years (Patient 2), three years (Patient 3), and on a single sample date (Patient 4) were confirmed positive by PEA. The prolonged persistence of platelet-activating anti-PF4 antibodies in Patients 1-3 supported a diagnosis of MGTS in these patients. Strikingly, all four patients tested negative in two FDA-approved HIT ELISAs (Immucor PF4 IgG and Zymutest HIA IgG). SRA was negative for Patients 1 and 2, weakly positive for Patient 3 (33%), and positive for Patient 4 (72%). Of the 166 patients in the MGUS minus thrombosis cohort, one patient demonstrated a non-heparin induced HIT-like antibody that was HIT ELISA (Optical Density &gt;1.0) and PEA-positive, and inhibitable using high concentrations of heparin and FcGRIIa blockade. No follow-up samples were available to assess antibody longevity. The patient had no history of thrombosis, and testing demonstrated that the anti-PF4 antibody was not synonymous with the MGUS antibody.Conclusions: Among a cohort of 134 MGUS patients with thrombosis, the prevalence of MGTS was found to be 2.2% (3 patients with persistent platelet-activating anti-PF4 antibodies). The identification of anti-PF4 antibodies among MGUS patients provides a mechanism contributing to the increased thrombotic risk associated with monoclonal gammopathies. Antibody negativity in HIT ELISA and variable positivity in the SRA highlight the nonclassical serology associated with anti-PF4 antibodies in MGTS and support performing PF4-enhanced functional testing. In addition, some patients appear to produce coincidental (non-monoclonal) platelet-activating anti-PF4 antibodies without evidence of thrombosis, although the longevity of such antibodies could not be examined in the one patient where it was identified. These findings highlight the need for larger, prospective MGUS studies to validate these observations, further define the interplay between monoclonal gammopathies and thrombotic risk, and to better understand the long-term outcomes of patients with MGTS.