A

Archan Bhattacharya

Johnson & Johnson (United Kingdom)

Publishes on Osteoarthritis Treatment and Mechanisms, Knee injuries and reconstruction techniques, Exercise and Physiological Responses. 46 papers and 589 citations.

46Publications
589Total Citations

Is this you? Claim your profile.

Add your photo, update your bio, and get notified when your ranking changes.

Top publicationsby citations

Amivantamab plus Chemotherapy in NSCLC with <i>EGFR</i> Exon 20 Insertions
Caicun Zhou, Kejing Tang, Byoung Chul Cho et al.|New England Journal of Medicine|2023
Cited by 339

Amivantamab has been approved for the treatment of patients with advanced non–small-cell lung cancer (NSCLC) with epidermal growth factor receptor (EGFR) exon 20 insertions who have had disease progression during or after platinum-based chemotherapy. Phase 1 data showed the safety and antitumor activity of amivantamab plus carboplatin–pemetrexed (chemotherapy). Additional data on this combination therapy are needed. Download a PDF of the Research Summary. In this phase 3, international, randomized trial, we assigned in a 1:1 ratio patients with advanced NSCLC with EGFR exon 20 insertions who had not received previous systemic therapy to receive intravenous amivantamab plus chemotherapy (amivantamab–chemotherapy) or chemotherapy alone. The primary outcome was progression-free survival according to blinded independent central review. Patients in the chemotherapy group who had disease progression were allowed to cross over to receive amivantamab monotherapy. A total of 308 patients underwent randomization (153 to receive amivantamab–chemotherapy and 155 to receive chemotherapy alone). Progression-free survival was significantly longer in the amivantamab–chemotherapy group than in the chemotherapy group (median, 11.4 months and 6.7 months, respectively; hazard ratio for disease progression or death, 0.40; 95% confidence interval [CI], 0.30 to 0.53; P<0.001). At 18 months, progression-free survival was reported in 31% of the patients in the amivantamab–chemotherapy group and in 3% in the chemotherapy group; a complete or partial response at data cutoff was reported in 73% and 47%, respectively (rate ratio, 1.50; 95% CI, 1.32 to 1.68; P<0.001). In the interim overall survival analysis (33% maturity), the hazard ratio for death for amivantamab–chemotherapy as compared with chemotherapy was 0.67 (95% CI, 0.42 to 1.09; P=0.11). The predominant adverse events associated with amivantamab–chemotherapy were reversible hematologic and EGFR-related toxic effects; 7% of patients discontinued amivantamab owing to adverse reactions. The use of amivantamab–chemotherapy resulted in superior efficacy as compared with chemotherapy alone as first-line treatment of patients with advanced NSCLC with EGFR exon 20 insertions. (Funded by Janssen Research and Development; PAPILLON ClinicalTrials.gov number, NCT04538664.) QUICK TAKE VIDEO SUMMARYCombination Therapy in NSCLC with EGFR Exon 20 Insertions 02:15

Association between ultrasound-detected synovitis and knee pain: a population-based case–control study with both cross-sectional and follow-up data
Aliya Sarmanova, Michelle Hall, Gwen Fernandes et al.|Arthritis Research & Therapy|2017
Cited by 50Open Access

BACKGROUND: An important role for synovial pathology in the initiation and progression of knee osteoarthritis has been emphasised recently. This study aimed to examine whether ultrasonography-detected synovial changes associate with knee pain (KP) in a community population. METHODS: A case-control study was conducted to compare people with early KP (n = 298), established KP (n = 100) or no KP (n = 94) at baseline. Multinomial logistic regression was used to estimate the odds ratio (OR) and 95% confidence interval (CI) between groups adjusted for radiographic osteoarthritis (ROA) severity and other confounding factors. After 1 year, 255 participants with early and established KP completed the follow-up questionnaire for changes in KP. Logistic regression with adjustment was used to determine predictors of KP worsening. RESULTS: At baseline, effusion was associated with early KP (OR 2.64, 95% CI 1.57-4.45) and established KP (OR 5.07, 95% CI 2.74-9.38). Synovial hypertrophy was also associated with early KP (OR 5.43, 95% CI 2.12-13.92) and established KP (OR 13.27, 95% CI 4.97-35.43). The association with effusion diminished when adjusted for ROA. Power Doppler signal was uncommon (early KP 3%, established KP 2%, controls 0%). Baseline effusion predicted worsening of KP at 1 year (OR 1.95, 95% CI 1.05-3.64). However, after adjusting for ROA, the prediction was insignificant (adjusted OR 0.95, 95% CI 0.44-2.02). CONCLUSIONS: Ultrasound effusion and synovial hypertrophy are associated with KP, but only effusion predicts KP worsening. However, the association/prediction is not independent from ROA. Power Doppler signal is uncommon in people with KP. Further study is needed to understand whether synovitis is directly involved in different types of KP.

Amivantamab compared with real-world therapies in patients with advanced non-small cell lung cancer harboring EGFR exon 20 insertion mutations who progressed after platinum-based chemotherapy
Cited by 33Open Access

BACKGROUND: In the single-arm CHRYSALIS study, amivantamab showed durable responses and manageable safety in patients with advanced non-small cell lung cancer (NSCLC) harboring epidermal growth factor receptor (EGFR) exon 20 insertion mutations (ex20ins) who progressed on prior platinum-based chemotherapy. External controls can provide context for interpreting amivantamab efficacy. METHODS: External controls were selected from three US-based databases (ConcertAI, COTA, and Flatiron). Key inclusion criteria were diagnosis of EGFR ex20ins advanced NSCLC, prior platinum-based chemotherapy, and performance status score ≤ 1. Duplicate external controls were identified using a tokenization procedure and removed, and adjustment for differences in baseline characteristics between amivantamab-treated and external control cohorts was achieved using propensity score weighting. RESULTS: Amivantamab-treated and pooled external control cohorts included 81 and 125 patients, respectively. Baseline characteristics were generally similar across cohorts, except more amivantamab-treated patients were Asian (56% vs 13%). Most common therapies received by external controls were non-platinum-based chemotherapy (25.1%), immuno-oncology therapies (24.2%), EGFR tyrosine kinase inhibitors (16.3%), and platinum-based chemotherapy (16.3%). Overall response rate was 40% among amivantamab-treated patients and 16% among external controls. Amivantamab-treated patients had longer progression-free survival (median 8.3 vs 2.9 months; hazard ratio [HR; 95% CI]: 0.47 [0.34-0.65]), time to next therapy (median 14.8 vs 4.8 months; HR [95% CI]: 0.40 [0.28-0.57]), and overall survival (median 22.8 vs 12.8 months; HR [95% CI]: 0.49 [0.31-0.77]) than external controls. Results were consistent in sensitivity analyses comparing each external control dataset against the amivantamab-treated group separately. CONCLUSION: Among post-platinum patients with EGFR ex20ins advanced NSCLC, those treated with amivantamab had improved outcomes, including 10-month longer overall survival, versus external controls.

THE FUNCTIONAL MOVEMENT SCREENING TOOL DOES NOT PREDICT INJURY IN FOOTBALL
Christopher Rusling, Kimberley Edwards, Archan Bhattacharya et al.|Progress in Orthopedic Science|2015
Cited by 22

ABSTRACT Background The Functional Movement Screen (FMS) has been demonstrated to predict those individuals at heightened risk of injury within sports such as American Football. However, the relationship between the FMS and injury within football (a.k.a. soccer) has yet to be quantified. The current literature does not allude to whether the FMS has a role in predicting injury within this sport specific group. Objective To evaluate the association between the 7 FMS tasks and the incidence of non-contact injury amongst football players from a professional English football club over one season. Methods 135 footballers between the ages of 8 and 21 years from one professional football club’s academy were used. Players performed the FMS and then were observed throughout the study period to record and establish injury incidence in rates per 1000 training and match hours. Results The deep squat (p=0.0128) and trunk stability push-up (p=0.0621) were statistically significantly in predicting outcome (i.e. non-contact injury). Players with a trunk stability push up score of 3 had a statistically significant lower risk of injury than those with a score of 1. There was a similar trend for players with a trunk stability push up score of 2, but this was not statistically significant. Total FMS score was not statistically significantly related to injury. Conclusion There appears to be only statistically significant associations between 2 of the 7 FMS components and non-contact injury incidence within youth players from one professional football clubs’ academy. Further investigations need to be conducted to see whether these results reflect the academy football population within the English academy programme.