scholarly journals P816 Functional rare variants influence the clinical response to anti-TNF therapy in Crohn’s disease

2019 ◽  
Vol 13 (Supplement_1) ◽  
pp. S529-S531
Author(s):  
M Chaparro ◽  
A Aterido ◽  
I Guerra ◽  
M Iborra ◽  
J Cabriada ◽  
...  
Keyword(s):  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Clinical Response ◽  
Rare Variants

scholarly journals Functional rare variants influence the clinical response to anti-TNF therapy in Crohn’s disease

2019 ◽  
Vol 12 ◽  
pp. 175628481986784
Author(s):  
María Chaparro ◽  
Adrià Aterido ◽  
Iván Guerra ◽  
Marisa Iborra ◽  
Jose Luis Cabriada ◽  
...  
Keyword(s):  
T Cells ◽  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Clinical Response ◽  
Signaling Pathway ◽  
Rare Variants ◽  
Low Frequency ◽  
Whole Genome ◽  
Cell Type ◽  
Epigenetic Marks

Background: The effect of low-frequency functional variation on anti-tumor necrosis factor alpha (TNF) response in Crohn’s disease (CD) patients remains unexplored. The objective of this study was to investigate the impact of functional rare variants in clinical response to anti-TNF therapy in CD. Methods: CD anti-TNF naïve patients starting anti-TNF treatment due to active disease [Crohn’s Disease Activity Index (CDAI > 150)] were included. The whole genome was sequenced using the Illumina Hiseq4000 platform. Clinical response was defined as a CDAI score <150 at week 14 of anti-TNF treatment. Low-frequency variants were annotated and classified according to their damaging potential. The whole genome of CD patients was screened to identify homozygous loss-of-function (LoF) variants. The TNF signaling pathway was tested for overabundance of damaging variants using the SKAT-O method. Functional implication of the associated rare variation was evaluated using cell-type epigenetic enrichment analyses. Results: A total of 41 consecutive CD patients were included; 3250 functional rare variants were identified (2682 damaging and 568 LoF variants). Two homozygous LoF mutations were found in HLA-B and HLA-DRB1 genes associated with lack of response and remission, respectively. Genome-wide LoF variants were enriched in epigenetic marks specific for the gastrointestinal tissue (colon, p = 4.11e–4; duodenum, p = 0.011). The burden of damaging variation in the TNF signaling pathway was associated with response to anti-TNF therapy ( p = 0.016); damaging variants were enriched in epigenetic marks from CD8+ ( p = 6.01e–4) and CD4+ ( p = 0.032) T cells. Conclusions: Functional rare variants are involved in the response to anti-TNF therapy in CD. Cell-type enrichment analysis suggests that the gut mucosa and CD8+ T cells are the main mediators of this response.

scholarly journals P537 Early predictors of long term clinical response to adalimumab in Crohn's disease

2013 ◽  
Vol 7 ◽  
pp. S225-S226
Author(s):  
M. Martinato ◽  
T. Slongo ◽  
M. Piovanello ◽  
M. Rigato ◽  
A. Ugoni ◽  
...  
Keyword(s):  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Clinical Response ◽  
Early Predictors

scholarly journals OP26 Risankizumab induces early clinical remission and response in patients with Moderate-to-Severe Crohn’s Disease: Results from the phase 3 ADVANCE and MOTIVATE studies

2021 ◽  
Vol 15 (Supplement_1) ◽  
pp. S026-S027
Author(s):  
S W Schreiber ◽  
M Ferrante ◽  
R Panaccione ◽  
J F Colombel ◽  
T Hisamatsu ◽  
...  
Keyword(s):  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Clinical Response ◽  
Induction Therapy ◽  
Clinical Remission ◽  
Activity Index ◽  
Unmet Need ◽  
Inadequate Response ◽  
Biologic Treatment ◽  
Double Blind

Abstract Background Present therapies leave an unmet need for early and effective treatment for patients with Crohn’s disease (CD). Risankizumab (RZB), a humanized immunoglobulin G1 monoclonal antibody against the p19 subunit of interleukin-23, was evaluated as an induction therapy to induce early clinical remission and response in patients with moderate-to-severe CD in two double-blind, randomized, placebo (PBO)-controlled studies (ADVANCE [NCT03104413] and MOTIVATE [NCT03105128]). Methods Patients with moderate-to-severe CD (CD Activity Index [CDAI] of 220–450, Simple Endoscopic Score for CD [SES-CD] ≥ 6 [≥ 4 for isolated ileal disease] excluding the narrowing component, and average daily [liquid/very soft] stool frequency [SF] ≥ 4 and/or average daily abdominal pain [AP] score ≥ 2) who had inadequate response or intolerance to conventional and/or biologic treatment (ADVANCE), or biologic treatment only (MOTIVATE) were randomised 2:2:1 (ADVANCE) or 1:1:1 (MOTIVATE) to receive intravenous RZB 600 mg, RZB 1200 mg, or PBO as induction therapy at weeks 0, 4, and 8. Clinical remission (per either CDAI or a composite of SF and AP criteria), clinical response (per CDAI criterion), and enhanced clinical response (per a composite of SF and AP criteria) were evaluated at weeks 4, 8, and 12 (endpoints defined in Figure 1 footnotes). Safety was assessed throughout the studies. Results A total of 1419 patients from ADVANCE (N = 850) and MOTIVATE (N = 569) respectively, were randomised and included in the intention-to-treat population. In both studies, starting at week 4 (the first prespecified measurement), greater proportions of RZB 600 mg or RZB 1200 mg- vs PBO-treated patients achieved clinical remission per either CDAI (P = .01/P &lt; .05) or SF/AP criteria (P &lt; .01/P &lt; .01), clinical response per CDAI criterion (P = .001/P &lt; .01), and enhanced clinical response per SF/AP criteria (P &lt; .01/P = .14) (Figure 1). For both RZB 600 mg and RZB 1200 mg, the efficacy and treatment effect increased through week 12 (P ≤ .001/P ≤ .001) (Figure 1). Treatment with RZB 600 mg or 1200 mg was well tolerated, and no new safety risks were identified.1,2 Conclusion Induction therapy with both RZB 600 mg and 1200 mg intravenous resulted in significantly greater clinical remission and response vs PBO as early as week 4 and sustained through week 12 in patients with moderate-to-severe CD who had inadequate response or intolerance to conventional and/or biologic treatment. References

scholarly journals Short-term tolerability and effectiveness of methotrexate monotherapy in adult patients with Crohn’s disease: a retrospective study

2021 ◽  
Vol 14 ◽  
pp. 175628482110430
Author(s):  
Hee Seung Hong ◽  
Kyuwon Kim ◽  
Kyunghwan Oh ◽  
Jae Yong Lee ◽  
Seung Wook Hong ◽  
...  
Keyword(s):  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Oral Administration ◽  
Clinical Response ◽  
Activity Index ◽  
Medical Center ◽  
Retrospective Chart Review ◽  
Asian Population ◽  
Aminosalicylic Acid ◽  
Parenteral Injection

Introduction: Immunomodulators remain fundamental for the medical treatment of Crohn’s disease (CD). Methotrexate (MTX) is widely used as a second-line immunomodulator; however, there is a lack of recent data on MTX monotherapy among the Asian population with CD. Therefore, in this study, we aimed to investigate the tolerability and clinical outcomes of MTX in Korean patients with CD. Methods: A retrospective chart review was performed for CD patients treated with MTX monotherapy or in combination with 5-aminosalicylic acid (5-ASA), at the Asan Medical Center, Seoul, South Korea. The tolerability of MTX monotherapy within 6 months was assessed and the clinical effectiveness of MTX was evaluated based on the Crohn’s disease activity index (CDAI). Results: In total, 85 patients were included, of which 29 (34.1%) discontinued MTX due to intolerability during the follow-up. Adverse events (AEs) were reported in 41 (48.2%) patients. The most common AE was gastrointestinal disorders (17/41) and only one patient experienced a serious AE, a systemic infection that required hospitalization. Among the 56 patients who tolerated MTX within 6 months, 44 (65.9%) showed a clinical response. Moreover, no factor was significantly associated with intolerability. The administration method was the only factor significantly associated with a response to MTX ( p = 0.041). The adjusted odds ratio of parenteral injection compared to oral administration was 5.68 (95% confidence interval (CI), 1.07–30.08). Conclusion: In this study, one-third of patients were intolerant to MTX; nonetheless, the response rate was as high as 65.9% among tolerant patients. In addition, no significant factors affected intolerability. In terms of the clinical response, parenteral injection could be better than oral administration.

scholarly journals Epithelial Cell Biomarkers Are Predictive of Response to Biologic Agents in Crohn’s Disease

2020 ◽  
Author(s):  
Mark T Osterman ◽  
Kelli L VanDussen ◽  
Ilyssa O Gordon ◽  
Elisabeth M Davis ◽  
Katherine Li ◽  
...  
Keyword(s):  
Crohn’S Disease ◽  
Epithelial Cell ◽  
Crohn's Disease ◽  
Clinical Response ◽  
Predictive Value ◽  
Controlled Trial ◽  
Biologic Agents ◽  
Intestinal Epithelial ◽  
Randomized Controlled ◽  
Discriminant Ability

Abstract Background Therapeutic efficacy of biologics has remained at about 50% for 2 decades. In Crohn’s disease (CD) patients, we examined the predictive value of an epithelial cell biomarker, ileal microvillar length (MVL), for clinical response to ustekinumab (UST) and vedolizumab (VDZ) and its relationship to another biomarker, intestinal epithelial cell (IEC) pyroptosis, with respect to response to VDZ. Method Ileal biopsies from the UNITI-2 randomized controlled trial were analyzed for MVL as a predictor of clinical response to UST. In a 5-center academic retrospective cohort of CD patients, ileal MVL was analyzed to determine its predictive value for response to VDZ. Correlation between ileal MVL and IEC pyroptosis was determined, and the discriminant ability of the combination of 2 biomarkers to VDZ was examined. Results Clinical response in UST was significantly higher than placebo (65% vs 39%; P = 0.03), with patients with normal MVL (&gt;1.7 µm) having the greatest therapeutic effect: 85% vs 20% (P = 0.02). For VDZ, clinical response with MVL of 1.35 to 1.55 µm was 82% vs 44% (&lt;1.35 µm) and 40% (&gt;1.55 µm; P = 0.038). There was no correlation between ileal MVL and IEC pyroptosis. The combination criteria of ileal pyroptosis &lt;14 positive cells/1000 IECs or MVL of 1.35 to 1.55 µm could identify 84% of responders and 67% of nonresponders (P = 0.001). Conclusion Ileal MVL was predictive of response to UST and VDZ in prospective and retrospective CD cohorts. It was independent of ileal IEC pyroptosis, and combination of the 2 biomarkers enhanced the discriminate ability of responders from nonresponders to VDZ.

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