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Limited disassembly of cytoplasmic hepatitis B virus nucleocapsids restricts viral infection in murine hepatic cells

Hepatology (Baltimore, Md.)

2022 Jun 19

Zhao, K;Guo, F;Wang, J;Zhong, Y;Yi, J;Teng, Y;Xu, Z;Zhao, L;Li, A;Wang, Z;Chen, X;Cheng, X;Xia, Y;
PMID: 35718932 | DOI: 10.1002/hep.32622

Murine hepatic cells cannot support hepatitis B virus (HBV) infection even with supplemental expression of viral receptor, human sodium-taurocholate cotransporting polypeptide (hNTCP). However, the specific restricted step remains elusive. In this study, we aimed to dissect HBV infection process in murine hepatic cells.Cells expressing hNTCP were inoculated with HBV or hepatitis delta virus (HDV). HBV pre-genomic RNA (pgRNA), covalently closed circular DNA (cccDNA) and different relaxed circular DNA (rcDNA) intermediates were produced in vitro. The repair process from rcDNA to cccDNA was assayed by in vitro repair experiments and in mouse with hydrodynamic injection. Southern blotting and in situ hybridization were used to detect HBV DNA. HBV, but not its satellite virus HDV, was restricted from productive infection in murine hepatic cells expressing hNTCP. Transfection of HBV pgRNA could establish HBV replication in human, but not in murine hepatic cells. HBV replication-competent plasmid, cccDNA and recombinant cccDNA could support HBV transcription in murine hepatic cells. Different rcDNA intermediates could be repaired to form cccDNA both in vitro and in vivo. In addition, rcDNA could be detected in the nucleus of murine hepatic cells, but cccDNA could not be formed. Interestingly, nuclease sensitivity assay showed that the protein-linked rcDNA isolated from cytoplasm was completely nuclease resistant in murine but not in human hepatic cells.Our results imply that the disassembly of cytoplasmic HBV nucleocapsids is restricted in murine hepatic cells. Overcoming this limitation may help to establish an HBV infection mouse model.This article is protected by
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) in a Dog in Connecticut in February 2021

Viruses

2021 Oct 23

Lee, D;Helal, Z;Kim, J;Hunt, A;Barbieri, A;Tocco, N;Frasca, S;Kerr, K;Hyeon, J;Chung, D;Risatti, G;
| DOI: 10.3390/v13112141

We report the first detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in a 3-month-old dog in Connecticut that died suddenly and was submitted to the state veterinary diagnostic laboratory for postmortem examination. Viral RNA was detected in multiple organs of the dog by reverse transcription real time-PCR (RT-qPCR). Negative and positive sense strands of viral RNA were visualized by in situ hybridization using RNAscope technology. Complete genome sequencing and phylogenetic analysis of the hCoV-19/USA/CT-CVMDL-Dog-1/2021 (CT_Dog/2021) virus were conducted to identify the origin and lineage of the virus. The CT_Dog/2021 virus belonged to the GH/B1.2. genetic lineage and was genetically similar to SARS-CoV-2 identified in humans in the U.S. during the winter of 2020-2021. However, it was not related to other SARS-CoV-2 variants identified from companion animals in the U.S. It contained both the D614G in spike and P323L in nsp12 substitutions, which have become the dominant mutations in the United States. The continued sporadic detections of SARS-CoV-2 in companion animals warrant public health concerns about the zoonotic potential of SARS-CoV-2 and enhance our collective understanding of the epidemiology of the virus.
Technical note on the exploration of COVID-19 in autopsy material

Journal of clinical pathology

2023 Jan 30

Humphries, MP;Bingham, V;Abdullah Sidi, F;Craig, S;Lara, B;El-Daly, H;O'Doherty, N;Maxwell, P;Lewis, C;McQuaid, S;Lyness, J;James, J;Snead, DRJ;Salto-Tellez, M;
PMID: 36717223 | DOI: 10.1136/jcp-2022-208525

Interrogation of immune response in autopsy material from patients with SARS-CoV-2 is potentially significant. We aim to describe a validated protocol for the exploration of the molecular physiopathology of SARS-CoV-2 pulmonary disease using multiplex immunofluorescence (mIF).The application of validated assays for the detection of SARS-CoV-2 in tissues, originally developed in our laboratory in the context of oncology, was used to map the topography and complexity of the adaptive immune response at protein and mRNA levels.SARS-CoV-2 is detectable in situ by protein or mRNA, with a sensitivity that could be in part related to disease stage. In formalin-fixed, paraffin-embedded pneumonia material, multiplex immunofluorescent panels are robust, reliable and quantifiable and can detect topographic variations in inflammation related to pathological processes.Clinical autopsies have relevance in understanding diseases of unknown/complex pathophysiology. In particular, autopsy materials are suitable for the detection of SARS-CoV-2 and for the topographic description of the complex tissue-based immune response using mIF.
Modeling SARS-CoV-2: Comparative Pathology in Rhesus Macaque and Golden Syrian Hamster Models

Toxicologic pathology

2022 Feb 05

Choudhary, S;Kanevsky, I;Yildiz, S;Sellers, RS;Swanson, KA;Franks, T;Rathnasinghe, R;Munoz-Moreno, R;Jangra, S;Gonzalez, O;Meade, P;Coskran, T;Qian, J;Lanz, TA;Johnson, JG;Tierney, CA;Smith, JD;Tompkins, K;Illenberger, A;Corts, P;Ciolino, T;Dormitzer, PR;Dick, EJ;Shivanna, V;Hall-Ursone, S;Cole, J;Kaushal, D;Fontenot, JA;Martinez-Romero, C;McMahon, M;Krammer, F;Schotsaert, M;García-Sastre, A;
PMID: 35128980 | DOI: 10.1177/01926233211072767

Coronavirus disease 2019 (COVID-19) in humans has a wide range of presentations, ranging from asymptomatic or mild symptoms to severe illness. Suitable animal models mimicking varying degrees of clinical disease manifestations could expedite development of therapeutics and vaccines for COVID-19. Here we demonstrate that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection resulted in subclinical disease in rhesus macaques with mild pneumonia and clinical disease in Syrian hamsters with severe pneumonia. SARS-CoV-2 infection was confirmed by formalin-fixed, paraffin-embedded (FFPE) polymerase chain reaction (PCR), immunohistochemistry, or in situ hybridization. Replicating virus in the lungs was identified using in situ hybridization or virus plaque forming assays. Viral encephalitis, reported in some COVID-19 patients, was identified in one macaque and was confirmed with immunohistochemistry. There was no evidence of encephalitis in hamsters. Severity and distribution of lung inflammation were substantially more in hamsters compared with macaques and exhibited vascular changes and virus-induced cytopathic changes as seen in COVID-19 patients. Neither the hamster nor macaque models demonstrated evidence for multisystemic inflammatory syndrome (MIS). Data presented here demonstrate that macaques may be appropriate for mechanistic studies of mild asymptomatic COVID-19 pneumonia and COVID-19-associated encephalitis, whereas Syrian hamsters may be more suited to study severe COVID-19 pneumonia.
Diffuse trophoblast damage is the hallmark of SARS-CoV-2-associated fetal demise

Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc

2021 May 18

Garrido-Pontnou, M;Navarro, A;Camacho, J;Crispi, F;Alguacil-Guillén, M;Moreno-Baró, A;Hernandez-Losa, J;Sesé, M;Ramón Y Cajal, S;Garcia Ruíz, I;Serrano, B;Garcia-Aguilar, P;Suy, A;Ferreres, JC;Nadal, A;
PMID: 34006935 | DOI: 10.1038/s41379-021-00827-5

Placental pathology in SARS-CoV-2-infected pregnancies seems rather unspecific. However, the identification of the placental lesions due to SARS-CoV-2 infection would be a significant advance in order to improve the management of these pregnancies and to identify the mechanisms involved in a possible vertical transmission. The pathological findings in placentas delivered from 198 SARS-CoV-2-positive pregnant women were investigated for the presence of lesions associated with placental SARS-CoV-2 infection. SARS-CoV-2 infection was investigated in placental tissues through immunohistochemistry, and positive cases were further confirmed by in situ hybridization. SARS-CoV-2 infection was also investigated by RT-PCR in 33 cases, including all the immunohistochemically positive cases. Nine cases were SARS-CoV-2-positive by immunohistochemistry, in situ hybridization, and RT-PCR. These placentas showed lesions characterized by villous trophoblast necrosis with intervillous space collapse and variable amounts of mixed intervillous inflammatory infiltrate and perivillous fibrinoid deposition. Such lesions ranged from focal to massively widespread in five cases, resulting in intrauterine fetal death. Two of the stillborn fetuses showed some evidence of SARS-CoV-2 positivity. The remaining 189 placentas did not show similar lesions. The strong association between trophoblastic damage and placenta SARS-CoV-2 infection suggests that this lesion is a specific marker of SARS-CoV-2 infection in placenta. Diffuse trophoblastic damage, massively affecting chorionic villous tissue, can result in fetal death associated with COVID-19 disease.
Glycated ACE2 receptor in diabetes: open door for SARS-COV-2 entry in cardiomyocyte

Cardiovascular diabetology

2021 May 07

D'Onofrio, N;Scisciola, L;Sardu, C;Trotta, MC;De Feo, M;Maiello, C;Mascolo, P;De Micco, F;Turriziani, F;Municinò, E;Monetti, P;Lombardi, A;Napolitano, MG;Marino, FZ;Ronchi, A;Grimaldi, V;Hermenean, A;Rizzo, MR;Barbieri, M;Franco, R;Campobasso, CP;Napoli, C;Municinò, M;Paolisso, G;Balestrieri, ML;Marfella, R;
PMID: 33962629 | DOI: 10.1186/s12933-021-01286-7

About 50% of hospitalized coronavirus disease 2019 (COVID-19) patients with diabetes mellitus (DM) developed myocardial damage. The mechanisms of direct SARS-CoV-2 cardiomyocyte infection include viral invasion via ACE2-Spike glycoprotein-binding. In DM patients, the impact of glycation of ACE2 on cardiomyocyte invasion by SARS-CoV-2 can be of high importance. To evaluate the presence of SARS-CoV-2 in cardiomyocytes from heart autopsy of DM cases compared to Non-DM; to investigate the role of DM in SARS-COV-2 entry in cardiomyocytes. We evaluated consecutive autopsy cases, deceased for COVID-19, from Italy between Apr 30, 2020 and Jan 18, 2021. We evaluated SARS-CoV-2 in cardiomyocytes, expression of ACE2 (total and glycosylated form), and transmembrane protease serine protease-2 (TMPRSS2) protein. In order to study the role of diabetes on cardiomyocyte alterations, independently of COVID-19, we investigated ACE2, glycosylated ACE2, and TMPRSS2 proteins in cardiomyocytes from DM and Non-DM explanted-hearts. Finally, to investigate the effects of DM on ACE2 protein modification, an in vitro glycation study of recombinant human ACE2 (hACE2) was performed to evaluate the effects on binding to SARS-CoV-2 Spike protein. The authors included cardiac tissue from 97 autopsies. DM was diagnosed in 37 patients (38%). Fourth-seven out of 97 autopsies (48%) had SARS-CoV-2 RNA in cardiomyocytes. Thirty out of 37 DM autopsy cases (81%) and 17 out of 60 Non-DM autopsy cases (28%) had SARS-CoV-2 RNA in cardiomyocytes. Total ACE2, glycosylated ACE2, and TMPRSS2 protein expressions were higher in cardiomyocytes from autopsied and explanted hearts of DM than Non-DM. In vitro exposure of monomeric hACE2 to 120 mM glucose for 12 days led to non-enzymatic glycation of four lysine residues in the neck domain affecting the protein oligomerization. The upregulation of ACE2 expression (total and glycosylated forms) in DM cardiomyocytes, along with non-enzymatic glycation, could increase the susceptibility to COVID-19 infection in DM patients by favouring the cellular entry of SARS-CoV2.
Cardiac SARS-CoV-2 infection is associated with pro-inflammatory transcriptomic alterations within the heart

Cardiovascular research

2021 Oct 14

Bräuninger, H;Stoffers, B;Fitzek, ADE;Meißner, K;Aleshcheva, G;Schweizer, M;Weimann, J;Rotter, B;Warnke, S;Edler, C;Braun, F;Roedl, K;Scherschel, K;Escher, F;Kluge, S;Huber, TB;Ondruschka, B;Schultheiss, HP;Kirchhof, P;Blankenberg, S;Püschel, K;Westermann, D;Lindner, D;
PMID: 34647998 | DOI: 10.1093/cvr/cvab322

Cardiac involvement in COVID-19 is associated with adverse outcome. However, it is unclear whether cell specific consequences are associated with cardiac SARS-CoV-2 infection. Therefore, we investigated heart tissue utilizing in situ hybridization, immunohistochemistry and RNA-sequencing in consecutive autopsy cases to quantify virus load and characterize cardiac involvement in COVID-19.In this study, 95 SARS-CoV-2-positive autopsy cases were included. A relevant SARS-CoV-2 virus load in the cardiac tissue was detected in 41/95 deceased (43%). MACE-RNA-sequencing was performed to identify molecular pathomechanisms caused by the infection of the heart. A signature matrix was generated based on the single-cell dataset "Heart Cell Atlas" and used for digital cytometry on the MACE-RNA-sequencing data. Thus, immune cell fractions were estimated and revealed no difference in immune cell numbers in cases with and without cardiac infection. This result was confirmed by quantitative immunohistological diagnosis.MACE-RNA-sequencing revealed 19 differentially expressed genes (DEGs) with a q-value <0.05 (e.g. up: IFI44L, IFT3, TRIM25; down: NPPB, MB, MYPN). The upregulated DEGs were linked to interferon pathways and originate predominantly from endothelial cells. In contrast, the downregulated DEGs originate predominately from cardiomyocytes. Immunofluorescent staining showed viral protein in cells positive for the endothelial marker ICAM1 but rarely in cardiomyocytes. The GO term analysis revealed that downregulated GO terms were linked to cardiomyocyte structure, whereas upregulated GO terms were linked to anti-virus immune response.This study reveals, that cardiac infection induced transcriptomic alterations mainly linked to immune response and destruction of cardiomyocytes. While endothelial cells are primarily targeted by the virus, we suggest cardiomyocyte-destruction by paracrine effects. Increased pro-inflammatory gene expression was detected in SARS-CoV-2-infected cardiac tissue but no increased SARS-CoV-2 associated immune cell infiltration was observed.Cardiac injury can be documented in COVID-19, regardless the direct cardiac virus infection and is known to be associated with outcome. However, the direct virus infection of the myocardium leads to transcriptomic alterations and might therefore additionally contribute to pathophysiological processes in COVID-19. Therefore, consequences of cardiac virus infection need to be investigated in future studies, since they might also contribute to long-term effects in case of survival.
Tissue factor upregulation is associated with SARS-CoV-2 in the lungs of COVID-19 patients

Journal of thrombosis and haemostasis : JTH

2021 Jul 08

Subrahmanian, S;Borczuk, A;Salvatore, S;Fung, KM;Merrill, JT;Laurence, J;Ahamed, J;
PMID: 34236752 | DOI: 10.1111/jth.15451

A substantial proportion of patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) develop severe/critical coronavirus disease 2019 (COVID-19) characterized by acute respiratory distress syndrome (ARDS) with thrombosis.We tested the hypothesis that SARS-CoV-2--induced upregulation of tissue factor (TF) expression may be responsible for thrombus formation in COVID-19.We compared autopsy lung tissues from 11 patients with COVID-19--associated ARDS with samples from 6 patients with ARDS from other causes (non-COVID-19 ARDS) and 11 normal control lungs.Dual RNA in situ hybridization for SARS-CoV-2 and TF identified sporadic clustered SARS-CoV-2 with prominent co-localization of SARS-CoV-2 and TF RNA. TF expression was 2-fold higher in COVID-19 than in non-COVID-19 ARDS lungs (P = .017) and correlated with the intensity of SARS-CoV-2 staining (R2  = .36, P = .04). By immunofluorescence, TF protein expression was 2.1-fold higher in COVID-19 versus non-COVID-19 ARDS lungs (P = .0048) and 11-fold (P < .001) higher than control lungs. Fibrin thrombi and thrombi positive for platelet factor 4 (PF4) were found in close proximity to regions expressing TF in COVID-19 ARDS lung, and correlated with TF expression (fibrin, R2  = .52, P < .001; PF4, R2  = .59, P < .001).These data suggest that upregulation of TF expression is associated with thrombus formation in COVID-19 lungs and could be a key therapeutic target. Correlation of TF expression with SARS-CoV-2 in lungs of COVID-19 patients also raises the possibility of direct TF induction by the virus.
SARS-CoV-2 crosses the blood-brain barrier accompanied with basement membrane disruption without tight junctions alteration

Signal transduction and targeted therapy

2021 Sep 06

Zhang, L;Zhou, L;Bao, L;Liu, J;Zhu, H;Lv, Q;Liu, R;Chen, W;Tong, W;Wei, Q;Xu, Y;Deng, W;Gao, H;Xue, J;Song, Z;Yu, P;Han, Y;Zhang, Y;Sun, X;Yu, X;Qin, C;
PMID: 34489403 | DOI: 10.1038/s41392-021-00719-9

SARS-CoV-2 has been reported to show a capacity for invading the brains of humans and model animals. However, it remains unclear whether and how SARS-CoV-2 crosses the blood-brain barrier (BBB). Herein, SARS-CoV-2 RNA was occasionally detected in the vascular wall and perivascular space, as well as in brain microvascular endothelial cells (BMECs) in the infected K18-hACE2 transgenic mice. Moreover, the permeability of the infected vessel was increased. Furthermore, disintegrity of BBB was discovered in the infected hamsters by administration of Evans blue. Interestingly, the expression of claudin5, ZO-1, occludin and the ultrastructure of tight junctions (TJs) showed unchanged, whereas, the basement membrane was disrupted in the infected animals. Using an in vitro BBB model that comprises primary BMECs with astrocytes, SARS-CoV-2 was found to infect and cross through the BMECs. Consistent with in vivo experiments, the expression of MMP9 was increased and collagen IV was decreased while the markers for TJs were not altered in the SARS-CoV-2-infected BMECs. Besides, inflammatory responses including vasculitis, glial activation, and upregulated inflammatory factors occurred after SARS-CoV-2 infection. Overall, our results provide evidence supporting that SARS-CoV-2 can cross the BBB in a transcellular pathway accompanied with basement membrane disrupted without obvious alteration of TJs.
Persistent Low Level of Hepatitis B Virus Promotes Fibrosis Progression During Therapy.

Clin Gastroenterol Hepatol.

2020 Mar 06

Sun Y, Wu X, Zhou J, Meng T, Wang B, Chen S, Liu H, Wang T, Zhao X, Wu S, Kong Y, Ou X, Wee A, Theise ND, Qiu C, Zhang W, Lu F, Jia J, You H
PMID: 32147592 | DOI: 10.1016/j.cgh.2020.03.001

BACKGROUND & AIMS: Progression of liver fibrosis still occurs in some patients with chronic hepatitis B virus (HBV) infection despite antiviral therapy. We aimed to identify risk factors for fibrosis progression in patients who received antiviral therapy. METHODS: We conducted a longitudinal study of patients with chronic HBV infection and liver biopsies collected before and after 78 weeks of anti-HBV therapy. Fibrosis progression was defined as Ishak stage increase ? 1 or as predominantly progressive classified by P-I-R system (Beijing Classification). Levels of HBV DNA and HBV RNA in blood samples were measured by real-time quantitative PCR. HBV RNA in liver tissue was detected by in situ hybridization. RESULTS: A total of 239 patients with chronic HBV infection with paired liver biopsies were included. Among the 163 patients with significant fibrosis at baseline (Ishak ? stage 3), fibrosis progressed in 22 patients (13%), was indeterminate in 24 patients (15%), and regressed in 117 patients (72%). Univariate and multivariate analyses revealed that independent risk factors for fibrosis progression were higher rate of detected HBV DNA at week 78 (odds ratio, 4.84; 95% CI, 1.30-17.98; P = .019) and alcohol intake (odds ratio, 23.84; 95% CI, 2.68-212.50; P = .004). HBV DNA was detected in blood samples from a significantly higher proportion of patients with fibrosis progression (50%) at week 78 than patients with fibrosis regression (19%) or indeterminate fibrosis (26%) (P = .015), despite low viremia (20-200 IU/mL) in all groups. The decrease of serum HBV RNA from baseline in the fibrosis regression group was larger than that in the fibrosis progression group. CONCLUSIONS: In a longitudinal study of patients with chronic HBV infection, we associated liver fibrosis progression at week 78 of treatment with higher rates of detected HBV DNA. We propose that a low level of residual HBV may still promote fibrosis progression, and that patients' levels of HBV DNA should be carefully monitored.
Human Type II Taste Cells Express ACE2 and are Infected by SARS-CoV-2

The American journal of pathology

2021 Jun 05

Doyle, ME;Appleton, A;Liu, QR;Yao, Q;Mazucanti, CH;Egan, JM;
PMID: 34102107 | DOI: 10.1016/j.ajpath.2021.05.010

Chemosensory changes are well-reported symptoms of SARS-CoV-2 infection. The virus targets cells for entry by binding of its spike protein to cell-surface angiotensin-converting enzyme- 2 (ACE2). It was not known whether ACE2 is expressed on taste receptor cells (TRCs) nor if TRCs are infected directly. Using an in-situ hybridization (ISH) probe and an antibody specific to ACE2, ACE2 is present on a subpopulation of TRCs, namely, Type II cells in taste buds in taste papillae. Fungiform papillae (FP) of a SARS-CoV-2+ patient exhibiting symptoms of COVID-19, including taste changes, were biopsied. Based on ISH, replicating SARS-CoV-2 was present in Type II cells. Therefore, taste Type II cells provide a potential portal for viral entry that predicts vulnerabilities to SARS-CoV-2 in the oral cavity. The continuity and cell turnover of the patient's FP taste stem cell layer were disrupted during infection and had not completely recovered 6 weeks post symptom onset. Another patient suffering post-COVID-19 taste disturbances also had disrupted stem cells. These results demonstrate the possibility that novel and sudden taste changes frequently reported in COVID-19 may be the result of direct infection of taste papillae by SARS-CoV-2. This may result in impaired taste receptor stem cell activity and suggest more work is needed to understand the acute and post-acute dynamics of viral kinetics in the human taste bud.
Epacadostat Plus Pembrolizumab in Patients With Advanced Solid Tumors: Phase I Results From a Multicenter, Open-Label Phase I/II Trial (ECHO-202/KEYNOTE-037).

J Clin Oncol. 2018 Sep 28:JCO2018789602.

2018 Sep 28

Mitchell TC, Hamid O, Smith DC, Bauer TM, Wasser JS, Olszanski AJ, Luke JJ, Balmanoukian AS, Schmidt EV, Zhao Y, Gong X, Maleski J, Leopold L, Gajewski TF.
PMID: 30265610 | DOI: 10.1200/JCO.2018.78.9602

Abstract PURPOSE: Tumors may evade immunosurveillance through upregulation of the indoleamine 2,3-dioxygenase 1 (IDO1) enzyme. Epacadostat is a potent and highly selective IDO1 enzyme inhibitor. The open-label phase I/II ECHO-202/KEYNOTE-037 trial evaluated epacadostat plus pembrolizumab, a programmed death protein 1 inhibitor, in patients with advanced solid tumors. Phase I results on maximum tolerated dose, safety, tolerability, preliminary antitumor activity, and pharmacokinetics are reported. PATIENTS AND METHODS: Patients received escalating doses of oral epacadostat (25, 50, 100, or 300 mg) twice per day plus intravenous pembrolizumab 2 mg/kg or 200 mg every 3 weeks. During the safety expansion, patients received epacadostat (50, 100, or 300 mg) twice per day plus pembrolizumab 200 mg every 3 weeks. RESULTS: Sixty-two patients were enrolled and received one or more doses of study treatment. The maximum tolerated dose of epacadostat in combination with pembrolizumab was not reached. Fifty-two patients (84%) experienced treatment-related adverse events (TRAEs), with fatigue (36%), rash (36%), arthralgia (24%), pruritus (23%), and nausea (21%) occurring in ≥ 20%. Grade 3/4 TRAEs were reported in 24% of patients. Seven patients (11%) discontinued study treatment because of TRAEs. No TRAEs led to death. Epacadostat 100 mg twice per day plus pembrolizumab 200 mg every 3 weeks was recommended for phase II evaluation. Objective responses (per Response Evaluation Criteria in Solid Tumors [RECIST] version 1.1) occurred in 12 (55%) of 22 patients with melanoma and in patients with non-small-cell lung cancer, renal cell carcinoma, endometrial adenocarcinoma, urothelial carcinoma, and squamous cell carcinoma of the head and neck. The pharmacokinetics of epacadostat and pembrolizumab and antidrug antibody rate were comparable to historical controls for monotherapies. CONCLUSION: Epacadostat in combination with pembrolizumab generally was well tolerated and had encouraging antitumor activity in multiple advanced solid tumors.

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Description
sense
Example: Hs-LAG3-sense
Standard probes for RNA detection are in antisense. Sense probe is reverse complent to the corresponding antisense probe.
Intron#
Example: Mm-Htt-intron2
Probe targets the indicated intron in the target gene, commonly used for pre-mRNA detection
Pool/Pan
Example: Hs-CD3-pool (Hs-CD3D, Hs-CD3E, Hs-CD3G)
A mixture of multiple probe sets targeting multiple genes or transcripts
No-XSp
Example: Hs-PDGFB-No-XMm
Does not cross detect with the species (Sp)
XSp
Example: Rn-Pde9a-XMm
designed to cross detect with the species (Sp)
O#
Example: Mm-Islr-O1
Alternative design targeting different regions of the same transcript or isoforms
CDS
Example: Hs-SLC31A-CDS
Probe targets the protein-coding sequence only
EnEmProbe targets exons n and m
En-EmProbe targets region from exon n to exon m
Retired Nomenclature
tvn
Example: Hs-LEPR-tv1
Designed to target transcript variant n
ORF
Example: Hs-ACVRL1-ORF
Probe targets open reading frame
UTR
Example: Hs-HTT-UTR-C3
Probe targets the untranslated region (non-protein-coding region) only
5UTR
Example: Hs-GNRHR-5UTR
Probe targets the 5' untranslated region only
3UTR
Example: Rn-Npy1r-3UTR
Probe targets the 3' untranslated region only
Pan
Example: Pool
A mixture of multiple probe sets targeting multiple genes or transcripts

Enabling research, drug development (CDx) and diagnostics

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