Publications by authors named "Karp D"

Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by synovial inflammation, pannus formation, and progressive joint destruction. The inflammatory milieu in RA drives endothelial cell activation and upregulation of adhesion molecules, thus facilitating leukocyte infiltration into the synovium. Reelin, a circulating glycoprotein previously implicated in endothelial activation and leukocyte recruitment in diseases such as atherosclerosis and multiple sclerosis, has emerged as a potential upstream regulator of these processes.

View Article and Find Full Text PDF

Introduction: TLR9 agonists are immunomodulators that have been of interest for combined use with cancer immunotherapy. TLR9 agonists, such as lefitolimod (MGN1703), significantly increased Th1 response in preclinical models and have demonstrated efficacy in early clinical trials. This trial assessed the safety and preliminary efficacy of the combination of lefitolimod and ipilimumab in patients with advanced solid tumors.

View Article and Find Full Text PDF

Background: Selinexor (SEL) is a nuclear exportin 1 inhibitor that blocks the transport of nuclear proteins, including tumor suppressors, to the cytoplasm. Preclinical data suggest that the combination of SEL with checkpoint blockade may result in improved response to immunotherapy.

Methods: NCT02419495 was a multiarm phase IB study of SEL in combination with other standard regimens in patients with advanced malignancies.

View Article and Find Full Text PDF

Background: The ErbB family of receptor tyrosine kinases are key targets for antitumor therapy. Although neratinib, a pan-ErbB kinase inhibitor, is approved in ErbB2-positive breast cancer, drug resistance is common. Preclinical data suggest that combining neratinib with the mTOR inhibitor everolimus may overcome such resistance.

View Article and Find Full Text PDF

Objective: To evaluate signal transducer and activator of transcription 3 (STAT3) inhibition we conducted a co-clinical trial testing danvatirsen, a STAT3 antisense oligonucleotide (ASO) and checkpoint inhibition in conjunction with preclinical experiments.

Methods And Analysis: Orthotopically implanted pancreatic cancer (pancreatic adenocarcinoma (PDAC)) was treated with STAT3 ASO with immune checkpoint inhibition. Tumour infiltrating immune cell populations were characterised via flow cytometry.

View Article and Find Full Text PDF

Background: Talabostat, an oral small molecule inhibitor of dipeptidyl peptidases (DPP4 and DPP8/9), has shown synergistic activity with immune checkpoint inhibitors in preclinical studies. This open label, phase 2 basket trial assessed the antitumor activity of combining talabostat and pembrolizumab (anti-programmed death-1 antibody) in advanced solid tumor patients.

Methods: The primary objective was assessment of dose-limiting toxicity (DLT) rates in the first six patients (lead-in stage) and response rate (efficacy stage; included cohort A [checkpoint inhibitor (ICI) naive] and cohort B [ICI pretreated]) for the study treatment using the Response Evaluation Criteria in Solid Tumors (RECIST) v1.

View Article and Find Full Text PDF

Introduction: Molecular alterations in the PI3K/AKT and Ras/Raf/MEK/ERK pathways are frequently observed in patients with endometrial cancers. However, mTOR inhibitors, such as temsirolimus, have modest clinical benefits. In addition to inducing metabolic changes in cells, metformin activates AMPK, which in turn inhibits the mTOR pathway.

View Article and Find Full Text PDF
Article Synopsis
  • PD-1 inhibition shows effectiveness in treating patients with mismatch repair deficient (dMMR) solid tumors; however, routine testing for dMMR using immunohistochemistry (IHC) is not common across different tumor types.
  • A study involving over 15,000 solid tumor patients demonstrated that next-generation sequencing (NGS) can help identify mutations in MMR genes, revealing a correlation with IHC results in those tested.
  • The findings indicate that patients with MMR mutations showed a significant rate of dMMR, highlighting the potential benefits of employing IHC testing on patients with identified MMR mutations to optimize treatment options.
View Article and Find Full Text PDF

Miller Fisher syndrome (MFS) is a variant of Guillain-Barré syndrome (GBS), where the body's immune system erroneously attacks its own nerves. It typically presents with a triad of symptoms: ataxia, ophthalmoplegia, and areflexia. These symptoms often develop rapidly, usually within a few days after a viral or bacterial infection, most commonly following respiratory or gastrointestinal illnesses.

View Article and Find Full Text PDF

Objective: The objective of this study was to analyze the impact of the Area Deprivation Index (ADI) on disease activity and cardiovascular comorbidity in rheumatoid arthritis (RA).

Methods: A retrospective analysis of adult patients with RA was conducted to highlight differences in academic and safety net hospital clinics. Demographics, RA medication history, patient portal engagement, primary care presence, emergency or inpatient visits, RA disease activity and functional scores, Charlson Comorbidity Index (CCI), and cardiovascular disease (CVD) presence were captured.

View Article and Find Full Text PDF
Article Synopsis
  • - BMS-986156 is a new treatment that enhances T-cell activation and, when combined with other therapies like ipilimumab and nivolumab, shows promise in controlling tumors in advanced solid cancers.
  • - The study enrolled 50 patients with stage IV cancers resistant to standard treatments, dividing them into three groups receiving varying combinations of BMS-986156, ipilimumab, or nivolumab, with and without stereotactic ablative radiotherapy (SABR).
  • - Results indicated that the combination therapies were generally well tolerated, though 44% of patients experienced treatment-related adverse events, with 12% having more severe events, such as increased liver enzyme levels.
View Article and Find Full Text PDF

Cancer cells with BRCA1/2 deficiencies are sensitive to poly (ADP-ribose) polymerase (PARP) inhibitors. We evaluated the efficacy of talazoparib in DNA-Damage Repair (DDR)-altered patients. In this phase II trial, patients were enrolled onto one of four cohorts based on molecular alterations: (1) somatic BRCA1/2, (2) other homologous recombination repair pathway, (3) PTEN and (4) germline BRCA1/2.

View Article and Find Full Text PDF

Background: Paclitaxel resistance limits durability of response in patients with initial clinical benefit. Overexpression of spleen tyrosine kinase (SYK) has been proposed as a possible resistance mechanism. This phase I trial evaluated the safety and preliminary activity of the SYK inhibitor TAK-659 combined with paclitaxel in patients with advanced taxane-refractory solid tumors.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to explore the role of cytokines in predicting the prognosis of interstitial lung disease (ILD) and to distinguish between different ILD subtypes.
  • Researchers examined blood samples from 77 patients, measuring 27 cytokines and analyzing their association with disease progression using statistical methods.
  • Findings revealed that higher levels of IL-13 correlated with slower disease progression, and several cytokines showed significant differences between fibrotic and inflammatory ILD types, suggesting IL-13 could serve as a potential biomarker for ILD stability.
View Article and Find Full Text PDF
Article Synopsis
  • * Research across 2,655 farms in 11 countries shows that diversifying agriculture—through livestock, crops, soils, non-crop plantings, and water conservation—improves both social outcomes like food security and environmental outcomes like biodiversity.
  • * Using multiple diversification strategies together yields better results than using any one strategy alone, highlighting the need for supportive policies to encourage these practices.
View Article and Find Full Text PDF

Landscape ecologists have long suggested that pest abundances increase in simplified, monoculture landscapes. However, tests of this theory often fail to predict pest population sizes in real-world agricultural fields. These failures may arise not only from variation in pest ecology, but also from the widespread use of categorical land-use maps that do not adequately characterize habitat-availability for pests.

View Article and Find Full Text PDF

Behavioral changes are often animals' first responses to environmental change and may act as a bellwether for population viability. Nonetheless, most studies of habitat conversion focus on changes in species occurrences or abundances. We analyzed >14,000 behavioral observations across 55 bird species in communities in northwestern Costa Rica to determine how land use affects reproductive, foraging, and other passive kinds of behaviors not associated with either foraging or reproduction.

View Article and Find Full Text PDF
Article Synopsis
  • Sapanisertib, a dual mTORC1/2 inhibitor, was combined with ziv-aflibercept, an anti-VEGF treatment, in a Phase 1 study to assess its safety and effectiveness in patients with advanced solid tumors.
  • Fifty-five heavily pre-treated patients participated, with the treatment showing a maximum tolerated dose of sapanisertib and ziv-aflibercept resulting in notable side effects like hypertension and fatigue but no severe (grade 5) complications.
  • The combination therapy showed promising anti-tumor activity, with 74% of patients achieving stable disease and an overall disease control rate of 78%.
View Article and Find Full Text PDF

Translation is the process of turning observations in the research laboratory, clinic, and community into interventions that improve people's health. The Clinical and Translational Science Awards (CTSA) program is a National Center for Advancing Translational Sciences (NCATS) initiative to advance translational science and research. Currently, 64 "CTSA hubs" exist across the nation.

View Article and Find Full Text PDF
Article Synopsis
  • The study was a phase I trial focusing on the safety, pharmacokinetics, and effectiveness of tinengotinib, a multi-kinase inhibitor, in patients with advanced solid tumors.
  • Forty-eight patients participated, with a recommended daily dose established at 12 mg; common side effects included hypertension and a specific skin condition.
  • Preliminary results showed that tinengotinib was well tolerated and 30.2% of patients experienced clinical benefits, including some with specific types of cancer, suggesting potential effectiveness.
View Article and Find Full Text PDF

Addressing the ongoing biodiversity crisis requires identifying the winners and losers of global change. Species are often categorized based on how they respond to habitat loss; for example, species restricted to natural environments, those that most often occur in anthropogenic habitats, and generalists that do well in both. However, species might switch habitat affiliations across time and space: an organism may venture into human-modified areas in benign regions but retreat into thermally buffered forested habitats in areas with high temperatures.

View Article and Find Full Text PDF

Sinorhizobium meliloti is a model alpha-proteobacterium for investigating microbe-host interactions, in particular nitrogen-fixing rhizobium-legume symbioses. Successful infection requires complex coordination between compatible host and endosymbiont, including bacterial production of succinoglycan, also known as exopolysaccharide-I (EPS-I). In S.

View Article and Find Full Text PDF

Background: Immune checkpoint blockade has shown mixed results in advanced/recurrent gynecologic malignancies. Efficacy may be improved through costimulation with OX40 and 4-1BB agonists. The authors sought to evaluate the safety and efficacy of avelumab combined with utomilumab (a 4-1BB agonist), PF-04518600 (an OX40 agonist), and radiotherapy in patients with recurrent gynecologic malignancies.

View Article and Find Full Text PDF