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Dive into the research topics where Roopal Thakkar is active.

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Featured researches published by Roopal Thakkar.


Gastroenterology | 2012

Adalimumab Induces and Maintains Clinical Remission in Patients With Moderate-to-Severe Ulcerative Colitis

William J. Sandborn; Gert Van Assche; Walter Reinisch; Jean-Frederic Colombel; Geert R. D'Haens; Douglas C. Wolf; Martina Kron; Mary Beth Tighe; Andreas Lazar; Roopal Thakkar

BACKGROUND & AIMS Adalimumab is a fully human monoclonal antibody that binds tumor necrosis factor (TNF)-α. Its efficacy as maintenance therapy for patients with ulcerative colitis has not been studied in a controlled, double-blind trial. METHODS Ulcerative colitis long-term remission and maintenance with adalimumab 2 (ULTRA 2) was a randomized, double-blind, placebo-controlled trial to evaluate the efficacy of adalimumab in induction and maintenance of clinical remission in 494 patients with moderate-to-severe ulcerative colitis who received concurrent treatment with oral corticosteroids or immunosuppressants. Patients were stratified based on prior exposure to TNF-α antagonists (either had or had not been previously treated with anti-TNF-α) and randomly assigned to groups given adalimumab 160 mg at week 0, 80 mg at week 2, and then 40 mg every other week or placebo. Primary end points were remission at weeks 8 and 52. RESULTS Overall rates of clinical remission at week 8 were 16.5% on adalimumab and 9.3% on placebo (P = .019); corresponding values for week 52 were 17.3% and 8.5% (P = .004). Among anti-TNF-α naïve patients, rates of remission at week 8 were 21.3% on adalimumab and 11% on placebo (P = .017); corresponding values for week 52 were 22% and 12.4% (P = .029). Among patients who had previously received anti-TNF agents, rates of remission at week 8 were 9.2% on adalimumab and 6.9% on placebo (P = .559); corresponding values for week 52 were 10.2% and 3% (P = .039). Serious adverse events occurred in 12% of patients given adalimumab or placebo. Serious infections developed in 1.6% of patients given adalimumab and 1.9% given placebo. In the group given adalimumab, 1 patient developed squamous cell carcinoma and 1 developed gastric cancer. CONCLUSIONS Adalimumab was safe and more effective than placebo in inducing and maintaining clinical remission in patients with moderate-to-severe ulcerative colitis who did not have an adequate response to conventional therapy with steroids or immunosuppressants.


Gut | 2011

Adalimumab for induction of clinical remission in moderately to severely active ulcerative colitis: results of a randomised controlled trial

Walter Reinisch; William J. Sandborn; Daniel W. Hommes; Geert R. D'Haens; Stephen B. Hanauer; Stefan Schreiber; Remo Panaccione; Richard N. Fedorak; Mary Beth Tighe; Bidan Huang; Wendy Kampman; Andreas Lazar; Roopal Thakkar

Objective The aim of this study was to assess the efficacy and safety of adalimumab (ADA), a recombinant human monoclonal antibody against tumour necrosis factor α (TNF), for the induction of clinical remission in anti-TNF naïve patients with moderately to severely active ulcerative colitis. Methods This 8-week, multicentre, randomised, double-blind, placebo-controlled study (NCT00385736), conducted at 94 centres in North America and Europe, enrolled ambulatory adult patients with Mayo score of ≥6 points and endoscopic subscore of ≥2 points despite treatment with corticosteroids and/or immunosuppressants. Under the original study protocol, 186 patients were randomised (1:1) to subcutaneous treatment with ADA160/80 (160 mg at week 0, 80 mg at week 2, 40 mg at weeks 4 and 6) or placebo. Subsequently, at the request of European regulatory authorities, the protocol was amended to include a second induction group (ADA80/40: 80 mg at week 0, 40 mg at weeks 2, 4 and 6). The primary efficacy endpoint was clinical remission (Mayo score ≤2 with no individual subscore >1) at week 8, assessed in 390 patients randomised (1:1:1) to ADA160/80, ADA80/40, or placebo. Safety was assessed in all enrolled patients. Patients, study site personnel, investigators, and the sponsor were blinded to treatment assignment. Results At week 8, 18.5% of patients in the ADA160/80 group (p=0.031 vs placebo) and 10.0% in the ADA80/40 group (p=0.833 vs placebo) were in remission, compared with 9.2% in the placebo group. Serious adverse events occurred in 7.6%, 3.8% and 4.0% of patients in the placebo, ADA80/40, and ADA160/80 groups, respectively. There were two malignancies in the placebo group, none in the ADA groups. There were no cases of tuberculosis and no deaths. Conclusions ADA160/80 was safe and effective for induction of clinical remission in patients with moderately to severely active ulcerative colitis failing treatment with corticosteroids and/or immunosuppressants. Clinical trial NCT00385736.


Clinical Gastroenterology and Hepatology | 2014

Adalimumab Induces Deep Remission in Patients With Crohn's Disease

Jean-Frederic Colombel; Paul Rutgeerts; William J. Sandborn; Mei Yang; Anne Camez; Paul F. Pollack; Roopal Thakkar; Anne M. Robinson; Naijun Chen; Parvez Mulani; Jingdong Chao

BACKGROUND & AIMS Patients with moderate to severe ileocolonic Crohns disease (CD) who received adalimumab induction and maintenance therapy had greater rates of mucosal healing than patients who received placebo after adalimumab induction therapy in a 52-week trial (EXTend the Safety and Efficacy of Adalimumab Through ENDoscopic Healing). We investigated whether this treatment also induced deep remission-a composite clinical and endoscopic end point. METHODS Rates of deep remission, defined as the absence of mucosal ulceration and CD Activity Index scores less than 150, were compared between patients given continuous adalimumab and those given only induction therapy followed by placebo. We assessed the relationships between deep remission and other outcomes among patients who received adalimumab. The outcomes of patients with deep remission were compared with those of patients with only the absence of mucosal ulceration or only clinical remission. RESULTS Rates of deep remission were 16% in patients given adalimumab vs 10% in those given placebo (P = .34) at week 12, and 19% vs 0% (P < .001) at week 52. Rates of deep remission were greatest among patients who received adalimumab and had CD for 2 years or less (33% at weeks 12 and 52). At week 52, patients who achieved deep remission at week 12 required significantly fewer adalimumab treatment adjustments, hospitalizations, and CD-related surgeries; had significantly less activity impairment; and had better quality of life and physical function compared with patients not achieving deep remission. Deep remission generally was associated with better outcomes than only an absence of mucosal ulceration; outcomes of patients with deep remission vs only clinical remission were similar. Deep remission was associated with estimated total cost savings of


Gastroenterology | 2014

Increased Risk of Malignancy With Adalimumab Combination Therapy, Compared With Monotherapy, for Crohn's Disease

Mark T. Osterman; William J. Sandborn; Jean-Frederic Colombel; Anne M. Robinson; Winnie Lau; Bidan Huang; Paul F. Pollack; Roopal Thakkar; James D. Lewis

10,360 (from weeks 12 through 52) compared with lack of deep remission. CONCLUSIONS In an exploratory study of patients with moderate to severe ileocolonic CD who received adalimumab induction and maintenance therapy, patients achieving deep remission appeared to have better 1-year outcomes than those not achieving deep remission. These findings should be validated in large, prospective trials. ClinicalTrials.gov number: NCT00348283.


European Journal of Heart Failure | 2009

Levosimendan vs. dobutamine: outcomes for acute heart failure patients on β‐blockers in SURVIVE†

Alexandre Mebazaa; Markku S. Nieminen; Gerasimos Filippatos; John G.F. Cleland; Jeffrey Salon; Roopal Thakkar; Robert J. Padley; Bidan Huang; Alain Cohen-Solal

BACKGROUND & AIMS Few studies have assessed the risk of malignancy from anti-tumor necrosis factor monotherapy or combination therapy for Crohns disease (CD). We determined the relative risk of malignancy in patients with CD who received adalimumab monotherapy, compared with the general population. We also compared the risk of malignancy associated with combination adalimumab and immunomodulator therapy with that of adalimumab monotherapy. METHODS We performed a pooled analysis of data from 1594 patients with CD who participated in clinical trials of adalimumab (CLASSIC I and II, CHARM, GAIN, EXTEND, and ADHERE studies; 3050 patient-years of exposure). We calculated rates of malignancy among patients; the expected rates of malignancy, based on the general population, were derived from the Surveillance, Epidemiology, and End Results registry and National Cancer Institute survey. RESULTS Compared with the general population, patients receiving adalimumab monotherapy did not have a greater than expected incidence of nonmelanoma skin cancer (NMSC) or other cancers, whereas those receiving combination therapy had a greater than expected incidence of malignancies other than NMSC (standardized incidence ratio, 3.04; 95% confidence interval [CI], 1.66-5.10) and of NMSC (standardized incidence ratio, 4.59; 95% CI, 2.51-7.70). Compared with patients receiving adalimumab monotherapy, those patients receiving combination therapy had an increased risk of malignancy other than NMSC (relative risk, 2.82; 95% CI, 1.07-7.44) and of NMSC (relative risk, 3.46; 95% CI, 1.08-11.06). CONCLUSIONS In patients with CD, the incidence of malignancy with adalimumab monotherapy was not greater than that of the general population. Co-administration of immunomodulator therapy and adalimumab was associated with an increased risk of NMSC and other cancers.


Alimentary Pharmacology & Therapeutics | 2013

One-year maintenance outcomes among patients with moderately-to-severely active ulcerative colitis who responded to induction therapy with adalimumab: subgroup analyses from ULTRA 2

William J. Sandborn; J.-F. Colombel; G. D'Haens; G. Van Assche; D. Wolf; Martina Kron; Andreas Lazar; Anne M. Robinson; Mei Yang; Jingdong Chao; Roopal Thakkar

Many chronic heart failure (CHF) patients take β‐blockers. When such patients are hospitalized for decompensation, it remains unclear how ongoing β‐blocker treatment will affect outcomes of acute inotrope therapy. We aimed to assess outcomes of SURVIVE patients who were on β‐blocker therapy before receiving a single intravenous infusion of levosimendan or dobutamine.


Gastroenterology | 2014

Adalimumab Therapy Is Associated With Reduced Risk of Hospitalization in Patients With Ulcerative Colitis

Brian G. Feagan; William J. Sandborn; Andreas Lazar; Roopal Thakkar; Bidan Huang; Nattanan Reilly; Naijun Chen; Mei Yang; Martha Skup; Parvez Mulani; Jingdong Chao

Patients with moderately‐to‐severely active ulcerative colitis (UC) are unlikely to continue anti‐TNF therapy in the absence of early therapeutic response.


The American Journal of Gastroenterology | 2014

Four-Year Maintenance Treatment With Adalimumab in Patients with Moderately to Severely Active Ulcerative Colitis: Data from ULTRA 1, 2, and 3

Jean-Frederic Colombel; William J. Sandborn; Subrata Ghosh; Douglas C. Wolf; Remo Panaccione; Brian G. Feagan; Walter Reinisch; Anne M. Robinson; Andreas Lazar; Martina Kron; Bidan Huang; Martha Skup; Roopal Thakkar

BACKGROUND & AIMS Adalimumab is effective for induction and maintenance of remission in patients with moderate to severe ulcerative colitis (UC). We assessed whether adalimumab, in addition to standard UC therapy, reduced the risk for hospitalization (from all causes, from complications of UC, or from complications of UC or the drugs used to treat it) and colectomy in patients with moderate to severe UC compared with placebo. METHODS Data were combined from patients that received induction therapy (a 160-mg dose followed by an 80-mg dose of adalimumab) or placebo in 2 trials (ULTRA 1 and ULTRA 2; n = 963). The risks of hospitalization and colectomy were compared between groups using unadjusted rates during the 8-week induction period, and patient-year-adjusted rates during 52 weeks. Statistical differences between groups were determined using the χ(2) method and Z score normal approximations. Numbers of hospitalizations were compared using Poisson regression with time offset. RESULTS Significant reductions in risk of all-cause, UC-related, and UC- or drug-related hospitalizations (by 40%, 50%, and 47%, respectively; P < .05 for all comparisons) were observed within the first 8 weeks of adalimumab therapy compared with placebo. Significantly lower incidence rates for all-cause (0.18 vs 0.26; P = .03), UC-related (0.12 vs 0.22; P = .002), and UC- or drug-related (0.14 vs 0.24; P = .005) hospitalizations were observed during 52 weeks of adalimumab therapy compared with placebo. Rates of colectomy did not differ significantly between patients given adalimumab vs placebo. CONCLUSIONS In patients with moderate to severe UC, the addition of adalimumab to standard of care treatment reduced the number of hospitalizations for any cause, as well as for UC-related and UC- or drug-related complications, compared with placebo. ClinicalTrials.gov numbers, NCT00385736 and NCT00408629.


Inflammatory Bowel Diseases | 2013

52-Week Efficacy of Adalimumab in Patients with Moderately to Severely Active Ulcerative Colitis Who Failed Corticosteroids and/or Immunosuppressants

Walter Reinisch; William J. Sandborn; Remo Panaccione; Bidan Huang; Paul F. Pollack; Andreas Lazar; Roopal Thakkar

OBJECTIVES:The safety and efficacy of adalimumab for patients with moderately to severely active ulcerative colitis (UC) has been reported up to week 52 from the placebo-controlled trials ULTRA (Ulcerative Colitis Long-Term Remission and Maintenance with Adalimumab) 1 and 2. Up to 4 years of data for adalimumab-treated patients from ULTRA 1, 2, and the open-label extension ULTRA 3 are presented.METHODS:Remission per partial Mayo score, remission per Inflammatory Bowel Disease Questionnaire (IBDQ) score, and mucosal healing rates were assessed in adalimumab-randomized patients from ULTRA 1 and 2 up to week 208. Corticosteroid-free remission was assessed in adalimumab-randomized patients who used corticosteroids at lead-in study baseline. Maintenance of remission per partial Mayo score and mucosal healing was assessed in patients who entered ULTRA 3 in remission per full Mayo score and with mucosal healing, respectively. As observed, last observation carried forward (LOCF) and nonresponder imputation (NRI) were used to report efficacy. Adverse events were reported for any adalimumab-treated patient.RESULTS:A total of 600/1,094 patients enrolled in ULTRA 1 or 2 were randomized to receive adalimumab and included in the intent-to-treat analyses of the studies. Of these, 199 patients remained on adalimumab after 4 years of follow-up. Rates of remission per partial Mayo score, remission per IBDQ score, mucosal healing, and corticosteroid discontinuation at week 208 were 24.7%, 26.3%, 27.7% (NRI), and 59.2% (observed), respectively. Of the patients who were followed up in ULTRA 3 (588/1,094), a total of 360 patients remained on adalimumab 3 years later. Remission per partial Mayo score and mucosal healing after ULTRA 1 or 2 to year 3 of ULTRA 3 were maintained by 63.6% and 59.9% of patients, respectively (NRI). Adverse event rates were stable over time.CONCLUSIONS:Remission, mucosal healing, and improved quality of life were maintained in patients with moderately to severely active UC with long-term adalimumab therapy, for up to 4 years. No new safety signals were reported.


The Lancet | 2017

Effect of tight control management on Crohn's disease (CALM): a multicentre, randomised, controlled phase 3 trial

Jean-Frederic Colombel; Remo Panaccione; Peter Bossuyt; Milan Lukas; Filip Baert; Tomáš Vaňásek; Ahmet Danalioglu; Gottfried Novacek; Alessandro Armuzzi; Xavier Hébuterne; Simon Travis; S. Danese; Walter Reinisch; William J. Sandborn; Paul Rutgeerts; Daniel W. Hommes; Stefan Schreiber; Ezequiel Neimark; Bidan Huang; Qian Zhou; Paloma Mendez; Joel Petersson; Kori Wallace; Anne M. Robinson; Roopal Thakkar; Geert R. D'Haens

Background: The results of an open-label follow-up until week 52 of patients with moderately to severely active ulcerative colitis who participated in a double-blind placebo-controlled adalimumab induction trial (ULTRA 1, NCT00385736) are reported. Methods: The study included adult anti–tumor necrosis factor–naive patients who completed double-blind adalimumab induction under an amended protocol (intent-to-treat [ITT]-A3 population) or any version of the protocol (ITT-E). Patients randomized to placebo received adalimumab beginning at week 8; patients randomized to adalimumab continued every other week dosing. Weekly dosing was allowed beginning at week 14 (original protocol) or week 12 (amended protocol). Clinical remission (Mayo score ⩽2, no subscore >1), clinical response (decrease in Mayo score ≥3 points and ≥30% from baseline, plus decrease in rectal bleeding subscore ≥1 or absolute rectal bleeding subscore ⩽1), mucosal healing (endoscopy subscore ⩽1), escalation to weekly dosing, and reduction in corticosteroid use were assessed at week 52 in the pooled ITT-A3 and pooled ITT-E populations, using modified nonresponder imputation. Results: Rates of clinical remission, clinical response, and mucosal healing at week 52 for the ITT-A3 population (N = 390) were 29.5%, 53.6%, and 46.7%, respectively; 38.8% of week 8 responders achieved clinical remission at week 52. Of patients using baseline corticosteroids (N = 234), 56.0% were corticosteroid-free at week 52 (26.1% in clinical remission). Results of the ITT-E population were similar. No new safety issues were identified. Conclusions: In this open-label study, adalimumab was effective for maintaining clinical remission in anti–tumor necrosis factor–naive patients with moderately to severely active ulcerative colitis who did not adequately respond to conventional therapy.

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Anne M. Robinson

Southampton General Hospital

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Jean-Frederic Colombel

Icahn School of Medicine at Mount Sinai

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Frank M. Ruemmele

Necker-Enfants Malades Hospital

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