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N. Levhar · SciRah

Researcher profile · Semantic Scholar

N. Levhar

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N. Levhar — researcher profile on SciRah

h-index: 17
Works: 56
Citations: 894

Most-cited papers

Detection of Small Bowel Mucosal Healing and Deep Remission in Patients With Known Small Bowel Crohn’s Disease Using Biomarkers, Capsule Endoscopy, and Imaging
U. Kopylov, D. Yablecovitch, A. Lahat, S. Neuman +7 more
2015American Journal of Gastroenterology137 citations
Semantic Scholar
Assessment of small bowel mucosal healing by video capsule endoscopy for the prediction of short-term and long-term risk of Crohn's disease flare: a prospective cohort study.
S. Ben-Horin, A. Lahat, M. Amitai, E. Klang +15 more
2019The Lancet Gastroenterology and Hepatology80 citations
Semantic Scholar
The Impact of Magnetic Resonance Enterography and Capsule Endoscopy on the Re-classification of Disease in Patients with Known Crohn's Disease: A Prospective Israeli IBD Research Nucleus (IIRN) Study.
T. Greener, E. Klang, D. Yablecovitch, A. Lahat +12 more
2016Journal of Crohn's & Colitis79 citations Open access
Semantic Scholar
Early drug and anti‐infliximab antibody levels for prediction of primary nonresponse to infliximab therapy
H. Bar-Yoseph, N. Levhar, L. Selinger, U. Manor +8 more
2018Alimentary Pharmacology and Therapeutics74 citations
Semantic Scholar
Individualized Dynamics in the Gut Microbiota Precede Crohn's Disease Flares.
T. Braun, A. Di Segni, M. Benshoshan, S. Neuman +15 more
2019American Journal of Gastroenterology71 citations
Semantic Scholar
Prospective Observational Evaluation of Time‐Dependency of Adalimumab Immunogenicity and drug concentrations: the POETIC Study
B. Ungar, T. Engel, D. Yablecovitch, A. Lahat +18 more
2018American Journal of Gastroenterology70 citations
Semantic Scholar
The Lewis score or the capsule endoscopy Crohn’s disease activity index: which one is better for the assessment of small bowel inflammation in established Crohn’s disease?
D. Yablecovitch, A. Lahat, S. Neuman, N. Levhar +4 more
2018Therapeutic Advances in Gastroenterology51 citations Open access
Semantic Scholar
Magnetic resonance enterography versus capsule endoscopy activity indices for quantification of small bowel inflammation in Crohn’s disease
U. Kopylov, E. Klang, D. Yablecovitch, A. Lahat +13 more
2016Therapeutic Advances in Gastroenterology45 citations Open access
Semantic Scholar
Vedolizumab Levels in Breast Milk of Nursing Mothers With Inflammatory Bowel Disease
A. Lahat, A. Shitrit, T. Naftali, Y. Milgrom +9 more
2018Journal of Crohn's & Colitis31 citations
Semantic Scholar
GATA6-AS1 Regulates Intestinal Epithelial Mitochondrial Functions, and its Reduced Expression is Linked to Intestinal Inflammation and Less Favourable Disease Course in Ulcerative Colitis
K. Sosnovski, T. Braun, A. Amir, Danielle Moshel +20 more
2023Journal of Crohn's & Colitis28 citations Open access
Semantic Scholar
Magnetic resonance enterography or video capsule endoscopy – what do Crohn’s disease patients prefer?
A. Lahat, U. Kopylov, M. Amitai, S. Neuman +9 more
2016Patient Preference and Adherence28 citations Open access
Semantic Scholar
Serum MMP-9: a novel biomarker for prediction of clinical relapse in patients with quiescent Crohn’s disease, a post hoc analysis
D. Yablecovitch, U. Kopylov, A. Lahat, M. Amitai +13 more
2019Therapeutic Advances in Gastroenterology25 citations Open access
Semantic Scholar
Re-phrasing the question: A simple tool for evaluation of adherence to therapy in patients with inflammatory bowel disease
T. Engel, B. Ungar, G. Ben-Haim, N. Levhar +2 more
2017United European Gastroenterology journal25 citations Open access
Semantic Scholar
Diet-omics in the Study of Urban and Rural Crohn disease Evolution (SOURCE) cohort
T. Braun, Rui Feng, Amnon Amir, N. Levhar +22 more
2024Nature Communications22 citations Open access
Semantic Scholar
Mucosal transcriptomics highlight lncRNAs implicated in ulcerative colitis, Crohn’s disease, and celiac disease
T. Braun, K. Sosnovski, A. Amir, M. Benshoshan +29 more
2023JCI Insight21 citations Open access
Semantic Scholar
Helicobacter pylori prevalence and clinical significance in patients with quiescent Crohn’s disease
A. Lahat, U. Kopylov, S. Neuman, N. Levhar +6 more
2017BMC Gastroenterology19 citations Open access
Semantic Scholar
Capsule Endoscopy Validation of the Magnetic Enterography Global Score in Patients with Established Crohn’s Disease
E. Klang, M. Amitai, A. Lahat, D. Yablecovitch +8 more
2018Journal of Crohn's & Colitis18 citations
Semantic Scholar
Propagation of EBV-driven Lymphomatous Transformation of Peripheral Blood B Cells by Immunomodulators and Biologics Used in the Treatment of Inflammatory Bowel Disease.
N. Levhar, B. Ungar, U. Kopylov, E. Fudim +10 more
2020Inflammatory Bowel Diseases17 citations
Semantic Scholar
Structural bowel damage in quiescent Crohn's disease.
M. Amitai, M. Zarchin, A. Lahat, D. Yablecovitch +7 more
2017Digestive and Liver Disease16 citations
Semantic Scholar
Rising prevalence of celiac disease is not universal and repeated testing is needed for population screening
Rachel Levinson-Castiel, R. Eliakim, E. Shinar, T. Perets +6 more
2019United European Gastroenterology journal15 citations Open access
Semantic Scholar
Perturbations of Diet and Gut Signatures Persist During Remission in Crohn's Disease Despite Effective Immune Suppression.
T. Braun, N. Levhar, G. Efroni, R. Hadar +17 more
2026Gastroenterology5 citations Open access
Semantic Scholar
Fecal and Serum Metabolome in Crohn’s Disease is Linked With Future Flare
N. Levhar, R. Hadar, T. Braun, R. Naamneh +12 more
2025United European Gastroenterology journal4 citations Open access
Semantic Scholar
Supplementation with endogenous healthy gut metabolites reverses the disruptions of in vitro and ex vivo epithelial functions induced by fecal content from IBD patients
H. Abbas-egbariya, L. Elwahidi, D. J. Levy, T. Braun +15 more
2025Gut microbes4 citations
Semantic Scholar
Fecal metabolic signals are associated with changes in microbiota and systemic metabolic pathways in Crohn’s disease
N. Levhar, R. Hadar, T. Braun, Hila Shacham +17 more
2026Scientific Reports3 citations Open access
Semantic Scholar
P392 Comprehensive video capsule endoscopy-based monitoring predicts short and long-term risk of disease flares in small bowel Crohn’s disease: A prospective cohort study
S. Ben-Horin, A. Lahat, M. Amitai, E. Klang +13 more
20183 citations
Semantic Scholar
Sa1174 The Impact of Magnetic Resonance Enterography and Capsule Endoscopy on the Classification of Disease in Patients With Known Crohn's Disease: A Prospective Israeli IBD Research Network (IIRN) Study
T. Greener, U. Kopylov, D. Yablecovitch, A. Lahat +6 more
20152 citations
Semantic Scholar
P1314 Multi-omics analysis of Crohn’s Disease trajectory from active to remission reveals that the altered ileal anti-bacterial epithelial signals and pathogenic microbial composition and metabolomics persist despite normalizing ileal immune signals during remission
Y. H. Ziv, T. Braun, N. Levhar, G. Efroni +11 more
2025Journal of Crohn's & Colitis1 citations
Semantic Scholar
DOP09 Models for predicting Crohn Disease (CD) exacerbation using serum and fecal metabolomics
N. Levhar, R. Hadar, T. Braun, G. Efroni +11 more
2024Journal of Crohn's & Colitis1 citations Open access
Semantic Scholar
DOP30 Identifying dietary factors and metabolites that may promote healthier Crohn Disease microbiome and mucosal transcriptomics signals as future targets using Diet-Omics
Y. H. Ziv, T. Braun, A. Amir, N. Levhar +6 more
2023Journal of Crohn's & Colitis1 citations
Semantic Scholar
Su1178 - Serum MMP-9 - A Novel Biomarker for Prediction of Clinical Relapse in Patients with Quiescent small Bowel Crohn's Disease
D. Yablecovitch, U. Kopylov, A. Lahat, M. Amitai +12 more
20181 citations
Semantic Scholar
P181 Home smart-phone based measurement of fecal calprotectin by IBD patients: correlation with laboratory assay and applicability as patient-friendly monitoring tool.
B. Ungar, A. Lahat, L. Selinger, N. Levhar +8 more
2017Journal of Crohn's & Colitis1 citations Open access
Semantic Scholar
DOP139 Perturbations of diet and gut signatures persist during remission in Crohn’s Disease despite effective immune suppression
T. Braun, N. Levhar, G. Efroni, R. Hadar +10 more
2026Journal of Crohn's & Colitis0 citations
Semantic Scholar
P0119 Simple short-term nut supplementation induced beneficial shifts in the fecal metabolite and microbial profiles in Inflammatory Bowel Disease and healthy controls
A. Ben Dov, G. Efroni, N. Levhar, R. Hadar +11 more
2026Journal of Crohn's & Colitis0 citations
Semantic Scholar
P0334 Metabolomic profiling of luminal (fecal) and mucosal (rectal swab) samples reveals significant niche-related differences, along with altered Inflammatory Bowel Disease (IBD) signals
R. Naamnh, N. Levhar, T. Braun, G. Efroni +8 more
2026Journal of Crohn's & Colitis0 citations
Semantic Scholar
DOP116 Meta-analyses of gut metabolomics signals across four IBD cohorts highlight robust, consistent signals, prioritizing azelate as a potential beneficial intervention with functional support of its ability to reduce epithelial inflammatory response in vitro
R. Naamnh, N. Levhar, T. Braun, G. Efroni +5 more
2026Journal of Crohn's & Colitis0 citations
Semantic Scholar
The Israeli IBD Research Nucleus: collaborative advancements in Israeli IBD research
I. Dotan, S. Ben-Horin, D. Schwartz, H. Bar-Yoseph +87 more
2026Therapeutic Advances in Gastroenterology0 citations Open access
Semantic Scholar
Su1990: DESPITE DIFFERENCES IN RECTAL AND ILEAL INVOLVEMENT BETWEEN ULCERATIVE COLITIS AND CROHN’S DISEASE, WE NOTED HIGH SIMILARITY IN MICROBIAL AND METABOLIC SIGNALS IN RECTAL SWAB SAMPLINGS AND MICROBIAL SIGNALS IN THE TERMINAL ILEUM
R. Naamneh, N. Levhar, R. Hadar, T. Braun +9 more
2025Gastroenterology0 citations Open access
Semantic Scholar
Su1960: MULTI-OMICS ANALYSIS OF CROHN’S DISEASE TRAJECTORY FROM ACTIVE TO REMISSION REVEALS THAT DURING REMISSION, ALTERED ILEAL ANTI-BACTERIAL EPITHELIAL SIGNALS AND PATHOGENIC MICROBIOME AND METABOLOMICS PERSIST DESPITE NORMALIZING ILEAL IMMUNE SIGNALS
Y. Haberman, T. Braun, N. Levhar, G. Efroni +11 more
2025Gastroenterology0 citations
Semantic Scholar
DOP025 Subjects sharing bacterial amplicon sequence variants exhibit differences in their IgA and IgG coating of gut bacteria, with enrichment of IgG binding for bacteria typically found in the oral cavity
N. Levhar, R. Hadar, T. Braun, G. Efroni +3 more
2025Journal of Crohn's & Colitis0 citations
Semantic Scholar
Tu1754 MODELS FOR PREDICTING CROHN DISEASE (CD) EXACERBATION USING SERUM AND FECAL METABOLOMICS
N. Levhar, R. Hadar, T. Braun, G. Efroni +11 more
2024Gastroenterology0 citations
Semantic Scholar
P004 Untargeted serum metabolome shows Crohn Disease (CD) associated signature, signals that correlate with disease activity and CRP, and signals that may precede disease flare
N. Levhar, R. Hadar, T. Braun, G. Efroni +14 more
2023Journal of Crohn's & Colitis0 citations
Semantic Scholar
Sa1861 CROHN DISEASE UNTARGETED FECAL METABOLOME SHOWS STRONG CORRELATION WITH SPECIFIC SALIVARY ASSOCIATED MICROBIAL TAXA, AND WITH DISEASE ACTIVITY
N. Levhar, R. Hadar, T. Braun, G. Efroni +14 more
2023Gastroenterology0 citations
Semantic Scholar
P046 Crohn Disease (CD) untargeted fecal metabolome shows strong correlation with specific salivary associated microbial taxa, and with disease activity
N. Levhar, R. Hadar, T. Braun, G. Efroni +14 more
2023Journal of Crohn's & Colitis0 citations Open access
Semantic Scholar
Mo1704 USING DIET-OMICS IN CROHN DISEASE TO IDENTIFY BENEFICIAL FECAL METABOLITES AND DIETARY COMPOUNDS THAT PROMOTE HEALTHIER MICROBIOME AND MUCOSAL TRANSCRIPTOMICS SIGNALS
Y. Haberman, T. Braun, A. Amir, N. Levhar +7 more
2023Gastroenterology0 citations
Semantic Scholar
794: DIETARY AND MULTI-OMICS CHARACTERIZATION OF NEW ONSET TREATMENT NAIVE CROHN DISEASE IDENTIFIES FACTORS THAT MAY CONTRIBUTE TO DISEASE PATHOGENESIS
Y. Haberman, T. Braun, A. Amir, N. Levhar +5 more
2022Gastroenterology0 citations
Semantic Scholar
OP31 Dietary and Multi-Omic characterization of new onset treatment naive Crohn Disease identifies factors that may contribute to disease pathogenesis
Y. H. Ziv, T. Braun, A. Amir, N. Levhar +7 more
2022Journal of Crohn's & Colitis0 citations Open access
Semantic Scholar
P014 Untargeted serum metabolome in longitudinal Crohn’s Disease (CD) cohort enrolled during remission shows strong individualized signature and CD-associated signals that are maintained also in patients who normalized their fecal calprotectin
N. Levhar, R. Hadar, T. Braun, G. Efroni +17 more
20210 citations
Semantic Scholar
P043 The effects of IBD biologic drugs on the propagation of lymphomatous transformation of EBV-infected peripheral blood mononuclear cells
N. Levhar, B. Ungar, U. Kopylov, M. Yavzori +5 more
20180 citations Open access
Semantic Scholar
P190 Serum MMP-9: a novel biomarker for prediction of clinical relapse in patients with Quiescent Small Bowel Crohn’s disease
D. Yablecovitch, U. Kopylov, A. Lahat, M. Amitai +12 more
20180 citations
Semantic Scholar
DOP089 Individualised variations in the gut microbiota during remission precede Crohn’s disease flares
T. Braun, A. Di Segni, S. Neuman, N. Levhar +14 more
20180 citations Open access
Semantic Scholar

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S. Ben-Horin×42
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S. Ben-Horin — researcher profile on SciRah
U. Kopylov×33
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U. Kopylov — researcher profile on SciRah
G. Efroni×27
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G. Efroni — researcher profile on SciRah
O. Picard×26
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O. Picard — researcher profile on SciRah

×25

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A. Lahat — researcher profile on SciRah

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S. Neuman — researcher profile on SciRah

D. Yablecovitch×23

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D. Yablecovitch — researcher profile on SciRah

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R. Hadar — researcher profile on SciRah

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T. Braun — researcher profile on SciRah

Y. Haberman×20

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Y. Haberman — researcher profile on SciRah

L. Selinger×16

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L. Selinger — researcher profile on SciRah

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M. Yavzori — researcher profile on SciRah