ArticleAdvances in therapy2020
Responder Profile to Pharmaceutical-Grade Chondroitin Sulfate: An Analysis of the CONCEPT Trial.
Article in Advances in therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03200288 (A Phase 3,Randomized,Double-blind,Placebo-controlled Study to Evaluate the Clinical Performance and Safety of an Intra-articular Solution of High and Low Molecular Weight Hyaluronic Acid), which is not on this map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Phase 3,Randomized,Double-blind,Placebo-controlled Study to Evaluate the Clinical Performance and Safety of an Intra-articular Solution of High and Low Molecular Weight Hyaluronic Acid (HL-01) in the Treatment of Pain in Symptomatic Knee Osteoarthritis
Who cites it
3 citing papers in PubMed, 3 citations in OpenAlex.
- Trial
- Impact of Symptomatic Slow-Acting Drugs on Inflammatory Pathways in Osteoarthritis: Therapeutic Advances and Future Challenges.ACS pharmacology & translational science · 2025Review
- Drug Screening Implicates Chondroitin Sulfate as a Potential Longevity Pill.Frontiers in aging · 2021Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionThe recent CONCEPT study showed that 800 mg/day of pharmaceutical-grade chondroitin sulfate (CS) was superior to placebo and similar to celecoxib in reducing pain and improving function over 6 months in patients with symptomatic knee osteoarthritis (OA). We investigate, in the present study, whether a responder profile to CS could be defined (i.e., to determine a patient's profile with the best response to treatment).
methodsSubjects from the CS group of the CONCEPT study were included in the present analysis. Within the CS group, various subgroups were created on the basis of different categories of age, sex, body mass index, Kellgren and Lawrence grade, age since the beginning of OA, and baseline level of pain (i.e., VAS) or function (i.e., Lequesne index). The nonparametric Kruskal-Wallis (KW) test was applied to compare the VAS pain/Lequesne index evolutions between the subgroups, and the Dwass, Steel, Critchlow, Fligner (DSCF) procedure was used to compute multiple comparisons. The impact of various covariates on the VAS pain/Lequesne index evolution was assessed by means of multiple regression.
resultsAcross all analyses, the probability of response to CS treatment was significantly associated with the duration between the date of diagnosis and the initiation of treatment. In other words, the shorter the interval between the diagnosis and the beginning of the treatment, the higher the response for both pain and function, particularly for patients with a duration of less than 5 years compared to patients with a duration of 10 years or more. No other criteria were found to be consistently associated with the response to CS treatment.
conclusionThe treatment of OA with CS has the highest chance of success if administered in the early stage of the disease. Further research with other clinical outcomes should be carried out prior to widespread application of these findings.
trial registrationClinicalTrials.gov identifier, NCT03200288.
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