Citations

Clear

2290 citation(s) found for "Singh, S".

Evolving Treatment Patterns and Clinical Outcomes in Children with Newly Diagnosed Crohn's Disease and Ulcerative Colitis in the United States, 2007–2023
Gonzalez, Michelle , Qi, Yuchen , Xu, Ronghui , Jairath, Vipul, Goodwin, Shane W. , Olén, Ola , Faubion, William A. , Kappelman, Michael D. , Singh, Siddharth

Mayo Clinic

American Journal of Gastroenterology | October 7, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.14309/ajg.0000000000004219 | PMID 42841617 Get It

Background & Aims: We examined treatment patterns and clinical outcomes in a contemporary cohort of children with newly diagnosed inflammatory bowel disease (IBD) in a large, commercially insured U.S. population. Methods: Using the OptumLabs® Data Warehouse, we created an inception cohort of physician-diagnosed IBD in children aged 6–17 years between 2007–23. We examined cumulative incidence of hospitalization, surgery, safety events, and medication use in patients with Crohn's disease (CD) and ulcerative colitis (UC), overall and stratified by diagnostic era, race and ethnicity, sex, and age at diagnosis. Results: Among 787 children with newly diagnosed CD (age at diagnosis, 13.4±2.9y; 57% male; 82% White, 5% Black, 7% Hispanic) followed over mean 4.6±3.0y, 5-year risk of IBD-related hospitalization and major surgery was 30% and 10%, respectively. In children diagnosed in 2019–23, 1-year cumulative use of corticosteroids and advanced therapy was 46% and 75%, respectively; advanced therapy use increased significantly over time (aHR, 3.43 [95% CI, 2.71–4.32] for 2019–23 vs. 2007–12), while corticosteroid use declined (0.67 [0.53–0.84]). Risk of IBD-related hospitalization was lower in children diagnosed between 2019–23 (0.65 [0.43–0.97]) compared with those diagnosed between 2007-12; surgical risk did not decline significantly, with confidence intervals compatible with a clinically meaningful reduction. Among 399 children with newly diagnosed UC (age at diagnosis, 14.0±3.0y; 53% male; 78% White, 5% Black, 7% Hispanic) followed over 4.5±3.0y, 5-year risk of IBD-related hospitalization and colectomy was 36% and 8%, respectively. Advanced therapy use increased significantly over time (4.46 [2.85–6.98] for 2019–23 vs. 2007–12), with no significant change in hospitalization or surgical risk across eras. No consistent racial and ethnic, age, or sex differences in advanced therapy use or clinical outcomes were identified in either CD or UC. Conclusions: In a contemporary cohort of commercially insured children with newly diagnosed IBD, early advanced therapy use has increased markedly over time. Surgical risk did not decline significantly in either disease; however, the study was not powered to exclude a clinically meaningful reduction, and these findings are hypothesis-generating rather than conclusive.
Multimorbidity, Polypharmacy, and Neighborhood Disadvantage as Determinants of Cognitive Performance in the ARCHES Cohort
Gebremichael, Dagem , Bekena, Semere , Singh, Ramkrishna K. , Walker, Alexis I. B., Millsap, Mario , Banks, Christian F., Bekele, Bisrat, Zhu, Yiqi, Trani, Jean-Francois, Babulal, Ganesh M.

Mayo Clinic

Journal of Applied Gerontology | October 7, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1177/07334648261491344 | PMID 42842789 Get It

Background African American adults experience a disproportionate burden of dementia, shaped by structural and clinical factors that remain unclear. Objective To quantify associations between multimorbidity, polypharmacy, and cognition in the context of neighborhood disadvantage. Methods This study is a cross-sectional analysis of 348 African American adults aged 45–92 years (mean 64.3 years; 73.6% female) from the Aging Research Characterizing Health Exposome via Social drivers (ARCHES) cohort. Comorbidity burden was assessed using a modified Charlson Comorbidity Index (CCI), polypharmacy as ≥5 medications, and neighborhood disadvantage using the Area Deprivation Index (ADI). Linear regression estimated associations with a Preclinical Alzheimer’s Cognitive Composite (PACC). The polypharmacy model included modified CCI as a covariate, and effect modification by ADI was assessed using an interaction term between polypharmacy and ADI. Results Higher modified CCI was associated with lower cognitive performance (B = −0.071; 95% CI: −0.130, −0.012). Polypharmacy was not independently associated with cognition after modified CCI adjustment (B = −0.081; β = −0.057; p = 0.257). No significant ADI interaction was found (p = 0.064).
Beyond Weight Loss: Tolerability, Acceptability, and Patient-Centered Outcomes of GLP-1 Receptor Agonists in Polycystic Ovary Syndrome
Tauseef, Urvah , Farook, Farshi , Shetty, Vaishnavi J. , Ramos-Ocola, Edith , Premkumar, Chandra Rupini , Haider, Muhammad Zaryab , Gandhi, Aashna , Shingala, Tunisha , Singh, Simardeep , Tahir, Muhammad Moiz , Wilson, Sancia Mary Jerold, Saraboji, Kaaviyashri , Yadav, Jyoti , Bumrah, Simardeep Kaur, Bilgaiyan, Rashi , Elangovan, Poonguzhali , Arunachalam, Shivaram P.

Mayo Clinic

Reproductive Medicine | October 5, 2026 | Volume: 7 | Issue: 4 | Pages: 55

10.3390/reprodmed7040055 Get It

Background/Objectives: Glucagon-like peptide-1 receptor agonists (GLP-1RAs) have emerged as a promising therapeutic option for women with polycystic ovary syndrome (PCOS). Clinical trials and data demonstrate significant improvements in body weight, insulin resistance, hyperandrogenism, and, in some studies, menstrual regularity and reproductive outcomes. However, the current evidence base remains disproportionately focused on short-term metabolic and anthropometric endpoints, while outcomes most relevant to patients—including treatment satisfaction, gastrointestinal tolerability, psychological well-being, body image, fertility planning, financial burden, and long-term adherence—remain inadequately characterized. Methods: We searched PubMed and Google Scholar for English-language literature published between 2021 and 2026, using structured keyword searches. This narrative review evaluates the literature on GLP-1RA use in PCOS beyond weight-focused outcomes, examining mechanisms of action, comparative tolerability across agents, and patient-centered domains including quality of life, eating behavior, and reproductive planning. Results: The published literature reveals a substantial gap between trial-reported completion rates and treatment success, and actual persistence and patient satisfaction. This discrepancy is particularly consequential in PCOS, where treatment decisions intersect with high baseline rates of depression, anxiety, and body image disturbance, and where ovulatory benefits must be weighed against mandatory discontinuation before conception. Conclusions: We identify a systematic absence of validated patient-reported outcome measures, standardized core outcome sets, and long-term follow-up data after treatment withdrawal. This review proposes a research agenda prioritizing patient-centered endpoints as co-primary outcomes, structured assessment of acceptability and persistence, qualitative and mixed-methods approaches, and a dedicated study of fertility planning and treatment interruption.
Anti‐calcitonin gene‐related peptide treatments in women's health: Gaps and clinical evidence in menstrual‐related migraine, pregnancy, lactation, and hormonal contraception: A narrative review
Pejic, Jelena , Halker Singh, Rashmi B

Mayo Clinic

Headache: The Journal of Head and Face Pain | September 29, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1111/head.70195 | PMID 42808257 Get It

Abstract Objective This study was conducted to review and synthesize current evidence on anti‐calcitonin gene‐related peptide (CGRP) therapies in women with menstrual‐related migraine, during pregnancy and lactation, and while using hormonal contraception. Background Migraine disproportionately affects women, with prevalence peaking during reproductive years when hormonal fluctuations modulate neurovascular and nociceptive pathways, including CGRP signaling, that contribute to migraine susceptibility. Despite the established efficacy of anti‐CGRP therapies—including monoclonal antibodies (erenumab, fremanezumab, galcanezumab, and eptinezumab) and gepants (ubrogepant, rimegepant, atogepant, and zavegepant)—evidence regarding their use across critical reproductive health contexts remains limited. Methods A systematic search of MEDLINE and Embase was conducted using MeSH terms and keywords related to migraine, CGRP‐targeted therapies, and reproductive health contexts. Studies were screened independently by two reviewers. Data were extracted using standardized forms and synthesized narratively by clinical domain. Results Sixteen studies met inclusion criteria. For menstrual‐related migraine, post hoc analyses and observational studies demonstrate that CGRP monoclonal antibodies reduce migraine frequency both during and outside the perimenstrual window (galcanezumab: −5.1 vs. −3.2 days, p < 0.001), although the perimenstrual period remains a time of relatively higher headache burden despite treatment. Pregnancy data are limited to pharmacovigilance analyses and case reports of unintended exposures, which have not identified specific patterns of maternal, fetal, or neonatal toxicity. Phase 1 pharmacokinetic studies demonstrate minimal gepant transfer into breast milk (relative infant doses, 0.04%–0.19%), well below the 10% safety threshold, although no human lactation data exist for CGRP monoclonal antibodies. No studies specifically evaluated anti‐CGRP therapies in women using hormonal contraceptives. Conclusion Substantial evidence gaps exist across all reproductive health contexts examined. Prospective trials in menstrual‐related migraine, pregnancy registries, lactation studies assessing infant outcomes, and research examining interactions with hormonal contraceptives are needed to optimize migraine care for women.
Flow Diversion for a Cervical Internal Carotid Artery Aneurysm: A Case Report and Literature Review
Esquetini-Vernon, Camila , Sandhu, Sukhwinder Johnny Singh, Beegle, Richard D , Tawk, Rabih

Mayo Clinic

Vascular and Endovascular Surgery | September 29, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1177/15385744261494490 | PMID 42809653 Get It

Introduction Extracranial internal carotid artery (ICA) aneurysms are rare (<1% of arterial aneurysms) yet clinically significant due to risks of distal embolization, local compressive symptoms, and, less commonly, rupture. High-quality evidence is limited, and no consensus guidelines exist, management is therefore individualized to aneurysm morphology, cervical segment involvement, vessel tortuosity, and operator expertise. Flow diversion with Pipeline Embolization Device (PED) achieves aneurysm exclusion while reconstructing the parent artery and is especially useful in tortuous cervical segments. Clinical Summary A 60-year-old woman with incidentally discovered bilateral cervical ICA aneurysms (left 2.3 cm mid-ICA; right 0.5 cm) and a type III bovine arch underwent PED diversion of the lesion. Via femoral access, a long 6-F Fubuki sheath (Asahi Intecc, Irvine, USA) with Sofia catheter (Micro-Vention, Tustin, USA) support and systemic heparinization (ACT >250 s) enabled deployment of a 5.0 × 25 mm Pipeline Flex (Medtronic Neurovascular, Irvine, USA) across the aneurysm neck. Immediate angiography showed intra-aneurysmal stasis while preserving parent-artery flow . At 12 months, she is asymptomatic with a 70% reduction in the contrast-opacified aneurysm component to 7 mm, and the contralateral small aneurysm remains stable. Conclusion Flow diversion with a PED provided an effective, artery-preserving solution for a mid-cervical ICA aneurysm in tortuous anatomy, achieving immediate flow stasis with parent-artery patency. At 12 months, the patient is asymptomatic with a contrast-opacified component reduced to 7 mm. This case supports using flow diversion for extracranial ICA aneurysms when anatomy is favorable, alongside careful antiplatelet therapy and planned imaging follow-up.
Emerging Technologies in Cardiovascular Disease Modeling: Bridging Basic Science and Clinical Translation
Singh Angom, Ramcharan , Magnano, Carter , Ashbrook, Sophie K , Mukhopadhyay, Debabrata

Mayo Clinic

Cells | September 28, 2026 | Volume: 15 | Issue: 19 | Pages: 1754

10.3390/cells15191754 | PMID 42882452 Get It

Cardiovascular diseases (CVDs) remain the leading cause of death worldwide, yet therapeutic development is limited by experimental models that incompletely recapitulate human physiology, disease heterogeneity, and treatment responses. Emerging human-relevant models, including patient-derived induced pluripotent stem cells, cardiac organoids, engineered tissues, organ-on-chip systems, genome editing, multi-omics, and computational approaches, are improving the ability to investigate cardiovascular disease mechanisms and therapeutic responses. In this review, we critically compare these technologies with respect to physiological relevance, reproducibility, scalability, throughput, and translational potential. We highlight their applications in disease modeling, drug discovery, toxicity assessment, and precision medicine while examining persistent limitations, including cellular immaturity, incomplete vascularization and systemic integration, model variability, and limited clinical validation. We further discuss how integration of bioengineering, genome editing, multi-omics, and computational methods may improve predictive performance. Standardization, interlaboratory validation, regulatory qualification, and prospective benchmarking against human clinical outcomes will be essential for translating these platforms into reliable tools for cardiovascular research and therapeutic development. Collectively, the convergence of stem cell biology, bioengineering, genome editing, multi-omics, and computational approaches is establishing a new generation of human-centered cardiovascular models with the potential to strengthen mechanistic discovery and accelerate the development of more predictive and personalized therapies.
Utilization of thyroid nodule images in consultations: secondary evaluation of a pilot randomized study
Patel, Urja, Perneth, Sandra Algarin, Rocha, Andrea Ortiz , Barb, Diana, Acosta, Gonzalo, Srihari, Ashok, Dziegielewski, Peter, Kawkgi, Omar El, Castro, M Regina, Dean, Diana, Ryder, Mabel, Hargraves, Ian, Bylund, Carma L., Roy, Arkaprava , Zhang, Zhongyue , Montori, Víctor M. , Brito, Juan P., Ospina, Naykky M Singh, Barb, Diana , Dziegielewski, Peter T. , Kawkgi, Omar El , Castro, M Regina, Ryder, Mabel , Bylund, Carma L. , Brito, Juan P. , Ospina, Naykky Singh

Mayo Clinic

No container title available | September 23, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.21203/rs.3.rs-10842799/v1 Get It

Abstract Context. Thyroid nodule ultrasound findings are crucial in guiding management decisions for patients with thyroid nodules. However, the frequency with which ultrasound images are discussed and reviewed with patients during clinical visits is not well understood. Objective. To assess how often thyroid ultrasound images are shown and discussed with patients during consultations, and to identify predictors of image review during clinical visits. Design and setting. Secondary analysis of a multicenter pilot randomized clinical trial conducted at two academic medical centers in the United States. Participants. Adults undergoing evaluation for thyroid nodules. Intervention. Participants were randomized to receive either usual care or care enhanced with a conversation aid. Main Outcome Measures. The primary outcome was the frequency of thyroid nodule imaging review evaluated as a binary outcome. Secondary outcomes included evaluation of predictors of image discussion. Results. Eighty-five patients were evaluated. Most participants were women (80%), mean age (60 years, SD 16), and White (86%), undergoing new patient visits (84%). Thyroid nodule ultrasound images were reviewed with patients in 53% of visits (45/85), and in all cases, clinicians initiated the imaging discussion. Predictors of image review included type of consultation (new patient visit) (OR 10.6, 95% CI: 1.79, 62.3). Age, sex, study arm, thyroid nodule size or cancer risk and plan of care (e.g., completing a biopsy) were not statistically associated with review of clinical images. Conclusions. Review of thyroid ultrasound images during clinical visits is relatively common, with consultation type serving as significant predictor.
Targeted delivery platforms for in vivo immune cell engineering: emerging strategies for cancer immunotherapy
Rachamala, Hari Krishnareddy, Atla, Sandeep , Angom, Ramcharan Singh , Rachamala, Hari Krishnareddy

Mayo Clinic

Frontiers in Pharmacology | September 21, 2026 | Volume: 17 | Issue: No issue available | Pages: No page available

10.3389/fphar.2026.1936688 | PMID 42835670 Get It

Cancer immunotherapy is a transformative technology allowing for the elimination of malignant cells through immune system stimulation; however, the large-scale clinical application of adoptive cellular therapy technologies is limited due to difficulties in ex vivo immune cell engineering, high costs, and complicated manufacturing process. Recently, in vivo immune cell engineering was discovered as an emerging approach that allows for the genetic reprogramming of immune cells in patients, thus circumventing many problems inherent to traditional cellular therapy technologies. Breakthroughs in targeted drug delivery systems such as cell-penetrating peptides, antibody- and receptor-mediated delivery approaches, lipid nanoparticles (LNPs), polymeric drug carriers, and biomimetic delivery systems allow for the more effective selective delivery of messenger RNA (mRNA), clustered regularly interspaced short palindromic repeats (CRISPR)/Cas gene editing systems, proteins, and other types of cargo to the target immune cells. In vivo immune cell engineering allows for the efficient generation of chimeric antigen receptor T-cells (CAR-T), CAR- natural killer (NK) cells, engineered macrophages, dendritic cells, and other immune cell types; moreover, transient and permanent immune reprogramming is achievable via vivo technologies. The present review discusses the biological barriers limiting immune cell-targeted delivery, including biodistribution, cellular uptake, intracellular transport, and endosomal escape of delivered drugs, and reviews the latest advancements in targeted delivery technologies addressing these obstacles. We also address the latest applications of in vivo immune cell engineering in hematological malignancies and solid tumors, including mRNA therapeutics, CRISPR-based genome editing, and advanced programmable immunotherapy technologies. Furthermore, we discuss unresolved issues related to the specificity of targeting, efficiency of drug delivery, safety of treatment, manufacturing processes, and regulation of in vivo immune engineering technologies and outline future opportunities arising from the integration of nanomedicine, synthetic biology, genome engineering, and artificial intelligence-assisted materials science.
PDS0101 With Pembrolizumab in HPV16-Positive Recurrent/Metastatic Head and Neck Squamous Cell Carcinoma
Weiss, J., Chintakuntlawar, Ashish, Worden, Francis P., Mehra, Ranee , Kang, Hyunseok , Zinner, Ralph G., Arnold, Susanne M. , Bhateja, Priyanka, Harrington, Kevin, Gupta, Shilpi, Zhao, Yujie, Pham, Dahn C., Najeeb, Sidra, Kaur, Varinder, Sukari, Ammar, Giri, Anshu , Panella, Timothy J., Grewal, Jaspreet, Galligan, Barbara, Nadler, Eric, Grant, Cliona, Arteta-Bulos, Rafael, Schaaf, David, Price, Katharine A., Kang, Hyunseok , Weiss, Jared, Kaczmar, John M. , Zinner, Ralph , Harrington, Kevin J. , Kaur, Varinder , Sukari, Ammar , Panella, Timothy, Grewal, Jaspreet Singh , Galligan, Barbara Marie, Nadler, Eric , Noble, David J. , Schaaf, David

Mayo Clinic

JAMA Oncology | September 17, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1001/jamaoncol.2026.3492 | PMID 42752531 Get It

Importance The incidence of human papillomavirus type 16 (HPV16–positive) recurrent/metastatic (R/M) head and neck squamous cell carcinoma (HNSCC) is rising. Approved therapies offer a durable response to a minority of patients. Objective To determine the efficacy and safety of a therapeutic HPV16-targeted immunotherapy, PDS0101, in combination with pembrolizumab in participants with HPV16-positive R/M HNSCC, with separate evaluation of immune checkpoint inhibitor (ICI)–naive and ICI-resistant cohorts. Design, Setting, and Participants VERSATILE-002 was a phase 2, open-label, multicenter nonrandomized clinical trial conducted at 26 oncology centers from March 29, 2021, to May 15, 2025, across the US, UK, and Ireland using the Simon 2-stage optimal design. Efficacy analyses were performed on modified intent-to-treat (mITT) population; safety analyses included all participants who received 1 or more doses. Eighty-eight participants with histologically confirmed R/M HPV16-positive HNSCC were enrolled, of whom 87 (98.9%) received treatment and composed the safety population. Seventy five (85.2%) were in the mITT population used for efficacy analyses, of whom 53 (70.7%) were ICI-naive with a programmed cell death ligand 1 combined positive score of 1 or greater and 22 (29.3%) were ICI-resistant. Exposures Pembrolizumab (200 mg, intravenously, every 3 weeks for up to 35 cycles) plus subcutaneous PDS0101 (5 scheduled doses per protocol). Main Outcomes and Measures The primary end point was objective response rate (ORR) per the Response Evaluation Criteria in Solid Tumors , version 1.1, by a masked independent central reviewer. Secondary end points included progression-free survival (PFS), median overall survival (mOS), and safety, with exploratory end points of duration of response, disease control rate, and response rates by programmed cell death ligand 1 status. Results Of the 75 patients in the mITT population, the mean (SD) age was 64.0 (8.3) years; 4 individuals (5%) were female and 71 (95%) were male; and 2 individuals (3%) were Asian, 1 (1%) was Black, 5 (7%) were Hispanic, and 71 (95%) were White. Among 53 ICI-naive participants in the mITT cohort, ORR by the central reviewer was 34.0%, median PFS was 5.3 months (95% CI, 2.10-9.00), and mOS was 39.3 months (95% CI, 23.90 to not evaluable). Among 22 ICI-resistant patients in the mITT cohort, no objective responses were observed and the primary end point (ORR by central reviewer) was not met, but mOS was 14.8 months (95% CI, 8.50-26.00). The treatment was well tolerated, with 13.8% experiencing grade 3 or higher treatment-related adverse events. Conclusions and Relevance The results of this nonrandomized clinical trial suggest that PDS0101 plus pembrolizumab showed antitumor activity in ICI-naive HPV16-positive R/M HNSCC, with favorable safety, response rates, and survival outcomes. The findings support further evaluation in a first-line setting. Trial Registration ClinicalTrials.gov Identifier: NCT04260126
Distinct and shared multimodal neuroimaging patterns in clinical frontotemporal dementia syndromes
Sintini, Irene , Ali, Farwa , Duffy, Joseph R. , Clark, Heather M, Meade, Gabriela, Dickson, Dennis W. , Lowe, Val J. , Josephs, Keith A. , Whitwell, Jennifer L. , Singh, Neha Atulkumar , Duffy, Joseph R , Meade, Gabriela F, Dickson, Dennis W , Josephs, Keith A , Whitwell, Jennifer , Singh, Neha Atulkumar , Clark, Heather M. , Utianski, Rene L. , Meade, Gabriela , Machulda, Mary M. , Satoh, Ryota

Mayo Clinic

Brain Communications | September 9, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1093/braincomms/fcag341 | PMID 42756560 Get It

Abstract Clinical syndromes of frontotemporal dementia present both distinct and overlapping neuroimaging abnormalities and, consequently, domains of impairment. The aim of this study was to determine how well covariance patterns from multiple neuroimaging modalities discriminate across clinical frontotemporal dementia syndromes. Four-hundred participants with a clinical frontotemporal dementia diagnosis, including behavioral variant of frontotemporal dementia, semantic variant of primary progressive aphasia, right temporal variant of frontotemporal dementia, primary progressive aphasia, apraxia of speech with agrammatic aphasia, primary progressive apraxia of speech, progressive supranuclear palsy and corticobasal syndrome, and 109 cognitively unimpaired participants underwent extensive neurological and neuropsychological assessments, structural MRI, flortaucipir-PET for tau and [18F] fluorodeoxyglucose-PET. Multimodal imaging covariance was investigated at the voxel-level using principal component analysis after adjusting for age and sex effects. Linear regression models were fit to investigate the relationship between principal components and clinical scores. Multinomial logistic regression models investigated the ability of imaging principal components to discriminate across syndromes. The first principal component, which describes the largest source of variability in the data, was a pattern of widespread cortical atrophy (21% variability explained) and of frontoparietal and temporal hypometabolism (21%): scores were lowest in behavioral variant of frontotemporal dementia and correlated with general cognitive impairment. On tau-PET, the first principal component (43% variability) was not significantly different among syndromes and captured a widespread cortical tau uptake, with a focus on the temporal lobe. In all three modalities, the second principal component captured temporal lobe imaging abnormalities, contrasting the motor and semantic clinical syndromes. Subsequent components described smaller variability. On cross-validation, the classifiers based on principal components from MRI (multiclass area under the receiver operating characteristic: 0.76) and [18F]fluorodeoxyglucose-PET (0.79) outperformed tau-PET (0.71), while combining all three modalities did not significantly improve the classifier performance. On cross-validation, the sensitivity of the image-based classifiers was heterogeneous across syndromes and modalities, with highest values for progressive supranuclear palsy and semantic variant of primary progressive aphasia and lowest for primary progressive aphasia and corticobasal syndrome. Our study found that the covariance components of structural and molecular neuroimaging underlying frontotemporal dementia clinical syndromes exist both as a continuum and with syndrome-specific patterns. More than one imaging model was able to correctly classify several frontotemporal dementia clinical syndromes with good specificity and sensitivity, highlighting the value of imaging in aiding patient diagnosis.