Trends and Characteristics of New Drug Approvals in China, 2011-2021

Comparative Assessment of Pivotal Trials Supporting the Indication Approvals of Innovative and Modified New Anticancer Drugs in China, 2016-2022

Background: Since the launch of drug regulatory reform in 2015, China has substantially increased the availability of new cancer therapies. However, the efficacy evidence criteria for modified new anticancer drugs have not been evaluated. This cross-sectional study aimed to assess the pivotal trials supporting the indication approvals of innovative and modified new chemical anticancer drugs in China. Methods: The characteristics of indications, regulatory aspects, and pivotal trial designs were extracted and described. The primary efficacy endpoints of the pivotal clinical trials, including overall survival (OS) and progression-free survival (PFS), were quantitatively assessed by meta-analysis. Results: Between 2016 and 2022, 77 cancer therapeutics for 107 indications were approved in China based on 128 pivotal trials. Among the 107 indications, 64 (59.8%) were classified as innovative anticancer drugs, and 43 (40.2%) as modified new anticancer drugs. The study found that pivotal trials for innovative approvals tended to be single-arm trials, while modified approvals were more likely to employ randomized clinical trials with larger sample sizes and rigorous designs. Despite innovative drugs often receiving more expedited regulatory designations, there were no statistically significant differences in clinical benefit of OS or PFS outcomes between innovative and modified approvals. Conclusions: These results suggest that the current regulatory framework may prioritize the speed of approval for innovative drugs over the strength of supporting evidence. These findings align with the strategic trends of pharmaceutical companies and regulatory inclinations that aim to expedite the approval of innovative anticancer drugs with a high unmet need, thereby accelerating patients' accessibility to treatment.

Changes in Clinical Trials of Dermatological Drugs in Mainland China Between 2016 and 2022: A Narrative Review

INTRODUCTION

Policy reforms in drug regulation and reimbursement have encouraged drug research and development in China. However, there is a lack of insights on industry trends for dermatology research. We aim to describe trends and features of clinical trials for dermatology drugs in China, understand recent achievements, and forecast development trends.

METHODS

Clinical trial records posted on the Registration and Information Disclosure Platform of Center for Drug Evaluation (CDE) were screened. All trials for dermatological drugs, posted on platform between 2016 and 2022 were included.

RESULTS

A total of 1172 trial records were identified, among which studies for skin infection, immune-mediated and inflammatory skin disease (IMIDs) and skin malignancy accounted for 48.9% (n = 573), 42.0% (n = 492) and 9.1% (n = 107), respectively. Most trials focused on generic drugs (n = 728, 62.1%). Multi-regional clinical trials (MRCTs) accounted for less than 6% of all trials. The number of trials on dermatology drugs increased sharply from 2016 to 2018 followed by a decline, which is mainly driven by the drop in bioequivalence evaluation (BE) studies for generic drugs indicated for skin infection. A growing trend in the number of trials for innovative drugs was observed. After removing duplicated drugs based on generic name, a total of 607 tested dermatology drugs were identified among which 51.9% were indicated for IMIDs. The number of innovative drugs exceeded generic drugs from 2020 to 2022. The geographic distribution of lead sites (the site where the principal investigator being employed) was uneven, with most of them located in east China. Of 1,068 trials sponsored by Chinese firms, most were BE (n = 692, 64.8%) and generic drugs (n = 722, 67.6%), while among 104 trials sponsored by multinational corporations (MNC), a majority were phase III (n = 53, 51.0%) trials and focused on innovative drugs (n = 94, 90.4%).

CONCLUSION

Findings demonstrated positive consequences of reforms in the healthcare industry in China. Nevertheless, long-term policies are expected to enhance the innovative capabilities of Chinese pharmaceutical companies while ensuring accessible and affordable drug supply with generics, encourage early participation in global drug R&D activities to shorten "drug lag", and promote investment in innovative drugs.

Evaluation of the implementation effectiveness of accelerated drug marketing registration procedures in China: lessons from the 2016-2024 regulatory review

China has implemented accelerated drug marketing registration procedures (ADMRPs) since 2016, including priority review and approval (PRA), conditional approval (CA), and breakthrough therapy drugs (BTDs). This study analyzed the characteristics of drugs approved by ADMRPs from 2016 to 2024 and explored the implementation effectiveness of these procedures. Overall, 922 drugs were approved for marketing through five ADMRPs (or procedure combinations): PRA (759, 82.3%), CA (12, 1.3%), CA + PRA (108, 11.7%), BTD + PRA (23, 2.5%), and BTD + CA + PRA (20, 2.2%). Drugs approved through the different procedures differed widely in terms of drug attributes and clinical uses, clinical trial design, and drug registration and marketing. Implementing ADMRPs has demonstrated excellent results in accelerating the development and marketing of clinically value-driven drugs.

Evaluation of changes in price, volume and expenditure of PD-1 drugs following the government reimbursement negotiation in China: a multiple-treatment period interrupted time series analysis

Background

Government reimbursement negotiation (GRN) is an important policy tool to increase the accessibility of drugs. In China, the impact of GRN implementation on programmed death-1 (PD-1) drugs price, procurement volume, and expenditure is unknown.

Methods

This study used a multiple-treatment period interrupted time series design covering the period from the first-time recorded in Chinese Medical Economic Information database to 2022 to examine changes in hospital procurement price, volume and expenditure of PD-1 drugs after the implementation of GRN in China. Data were obtained from 698 public hospitals of 30 provinces in China.

Results

A total of four PD-1 drugs have been selected in the National Reimbursement Drug List via GRN between March 2019 and 2022. After the implementation of the first-time GRN, the prices of all PD-1 drugs decreased significantly, with Camrelizumab experiencing the largest reduction in price and the largest increase in volume and expenditure. The Camrelizumab's price decreased by 1151.75 Chinese Yuan (CNY) (β2 = -1151.75; 95% confidence interval (CI) = -1254.534, 1048.96), volume increased by 159.549 thousand defined daily doses (β2 = 159.549; 95% CI = 119.12, 199.979) and expenditure increased by 11.172 million CNY (β2 = 11.172; 95% CI = 1.653, 20.692). Following the implementation of the second-time of GRN, Sintilimab showed the largest decrease in price, with price decreased by 164.099 CNY (β4 = -164.099; 95% CI = -171.867, 156.331), Tislelizumab had the largest increase in volume and expenditure, with the volume increased by 102.185 thousand defined daily doses (β4 = 102.185; 95% CI = 47.862, 156.509) and expenditure increased by 4.119 million CNY (β4 = 4.119; 95% CI = -3.808, 12.047).

Conclusions

The GRN policy improved the accessibility and affordability of PD-1 drugs. Health insurance policy-makers need to consider the legitimate interests of PD-1 drug manufacturers while ensuring the sustainability of the basic health insurance fund.

Regulatory efforts to address the access gap for foreign new drugs in China: the priority review program and related policies

BACKGROUND

China has implemented the priority review (PR) program and flexible registration requirements for new drugs with significant clinical value since 2016 to accelerate drug access. We aim to explore the impact of the reform efforts on the drug access gap between China and the US.

METHODS

We collected data on the imported new drug approvals that were licensed in China between 2007 and 2023, and measured their launch delays as compared to the US. Difference-in-difference models were used to compare the launch delays of PR approvals and non-PR approvals before and after the implementation of the PR. Propensity score matching was used to construct the imputed PR and non-PR approvals in the pre-PR period.

RESULTS

A total of 410 imported approvals were licensed in China in 2007-2023. Most approvals (316[77.1%]) were licensed after the PR was implemented, of which 189[59.8%] received the PR designation. The difference-in-difference models found that the PR program reduced drug launch delay by 1157.0 days (robust standard error, 571.0; P<0.05) and reduced drug submission delay by 1037.3 days (robust standard error, 520.8; P<0.05). The PR identified drugs with high clinical value and informed flexible registration requirements for them, which accelerated drug submission and market entry.

CONCLUSIONS

Our findings proved the importance of value-based prioritization of new drugs and flexibility in the statutory evidentiary standard in the drug approval process. Further efforts from the drug agency are needed to leverage the regulatory flexibility to provide fast market entry of new drugs without compromising their quality.

Disparities in the access to immune checkpoint inhibitors approved in the United States, the European Union and mainland China: a serial cross-sectional study

Background

Immune checkpoint inhibitors (ICIs) have revolutionised antitumour therapy. However, regional differences in ICI labels, including the impact of the review process and supporting trial evidence, remain unclear.

Methods

We conducted a serial cross-sectional study to examine trends and differences in indication approvals and associated clinical trials for ICIs across different regulatory agencies. We searched ICI labels approved by the Food and Drug Administration (FDA), European Medicines Agency (EMA) and National Medical Products Administration (NMPA) in Mainland China before 31 December 2022 and assessed the indications and clinical trials in labels. Relative lags of indication approvals were compared using the Mann-Whitney U test. The review time and interval between trial completion and indication submission were compared using the Kruskal-Wallis test.

Results

We collected 10 ICIs with 90 indications from the FDA, 10 ICIs with 70 indications from EMA and 16 ICIs with 65 indications from NMPA. Relative lags of ICI indication approval in China (median 344.0 (IQR 220.0, 688.0) days) were longer than in the European Union (118.5 (55.0, 189.0) days) (p<0.0001). Both the European Union (243.0 (191.0, 298.0) days) and China (283.0 (248.0, 339.5) days) demonstrated significantly longer review durations for ICI indications than the United States (181.0 (148.8, 191.8) days) (p<0.0001). While indication submissions to NMPA were significantly more delayed than those to the FDA (p<0.001), the former relied more on trial evidence of OS (84.0%) than the latter (58.0%).

Conclusion

ICIs approved in the United States, the European Union and mainland China differed in indications, approval time, review duration and evidence base, which may impact access to life-saving treatments. Future studies should investigate the impact of these differences and the underlying reasons beyond the evidence supporting the label approvals.

Research and development investment of Chinese chemical pharmaceutical companies under the national pooled procurement: a retrospective panel data analysis, 2013-2022

OBJECTIVE

To generate evidence about changes in the research and development (R&D) investment of Chinese chemical pharmaceutical companies before and after the implementation of the national pooled procurement, to respond to the concerns that significant price reductions might negatively affect R&D investment, and to facilitate the evidence-based decision-making for improvement of the national pooled procurement.

METHODS

This retrospective study employed the fixed-effects models with robust SEs to analyse the changes in R&D investment intensities of 76 A-share listed Chinese chemical pharmaceutical companies before and after the procurement implementation in 2019. The analyses were based on a panel data set between 2013 and 2022. Subgroup analyses were conducted to account for the heterogeneity of the target companies. The bootstrap hypothesis test method was employed to assess potential variations across the different subgroups.

RESULTS

Following the procurement implementation, the R&D investment intensity (RDI) of the target companies increased by 1.9% (p<0.05) compared with the RDI before the procurement implementation. Successful bidders exhibited a higher RDI of 2.2% (p<0.01) compared with that of the other suppliers. The RDI of companies engaged in traditional Chinese medicine (TCM) production was found to be 2.4% lower (p<0.01) than that of companies not involved in TCM production. Similarly, the companies engaged in the production of active pharmaceutical ingredients (APIs) had a 1.6% lower (p<0.01) RDI than those not involved in API production.

CONCLUSIONS

This study found that the enthusiasm of Chinese chemical medicines companies towards investing in R&D following the medicines regulatory reforms was not suppressed when the pilot pooled procurement was expanded and continued. The overall level of RDI following the pilot was higher than that before the pilot during the entire observation period. The enhanced investment in R&D has been a distinctive feature of Chinese chemical pharmaceutical companies that position themselves with more substantial market competitiveness.

Estimating the value of new antibiotic treatment strategies in Zhejiang province, China: cost-effectiveness analysis based on a validated dynamic model

OBJECTIVES

This analysis aims to better reflect the value of new antibiotic treatment strategies, thereby informing clinical antibiotic use, antimicrobial reimbursement and/or hospital formulary decision-making in China.

DESIGN

We adapted a published and validated dynamic disease transmission and cost-effectiveness model to evaluate the clinical and economic outcomes of introducing a new antibiotic, ceftazidime/avibactam (CAZ-AVI) for treating resistant infections in Zhejiang province, China. Outcomes were assessed over a 10-year infectious period and an annual discount rate of 5%. Costs were extracted from the hospital's Health Information System (HIS) and obtained after data cleaning, aggregation and discounting.

SETTING

The Chinese healthcare system perspective.

PARTICIPANTS

10 905 patients in a Chinese tier-3 hospital from 2018 to 2021 with any of the three common infections (complicated intra-abdominal infection (cIAI), hospital-acquired/ventilator-associated pneumonia (HAP/VAP) and infections with limited treatment options (LTO)) caused by three common resistant pathogens (Escherichia coli, Klebsiella spp. and Pseudomonas aeruginosa).

INTERVENTIONS

(1) Current treatment strategy (piperacillin-tazobactam (pip/taz) and meropenem); (2) CAZ-AVI at the third line; (3) CAZ-AVI at the second line; (4) CAZ-AVI at the first line; (5) CAZ/AVI first line, two lines diversified (i.e., equal pip/taz and CAZ-AVI at the first line; meropenem at the last line) and (6) CAZ/AVI first line, all-lines diversified.

PRIMARY OUTCOME MEASURES

Quality-adjusted life years (QALYs) lost, hospitalisation costs and incremental net monetary benefit (INMB) were used to assess cost-effectiveness.

RESULTS

Over 10 years, the introduction of CAZ-AVI to the current treatment strategy led to lower hospitalisation costs and more QALYs across all five treatment strategies, with between 68 284 and 78 571 QALYs gained whilst saving up to US$236.37 for each additional QALY gained. The INMB of introducing CAZ-AVI is estimated up to US$3 550 811 878.

CONCLUSIONS

Introducing CAZ-AVI had a positive impact on clinical and economic outcomes for treating antimicrobial resistance, and diversifying the antibiotics use early in the treatment might yield the best benefits.

The Impact of Regulatory Reforms in China on Drug Lag: The Role of Clinical Development Strategies

In recent years, there has been significant focus on China's new drug lag, but relevant research is limited. This study explores the reasons for drug lag by assessing the impact of reforms in China's drug review system, particularly focusing on the influence of clinical development strategies. This study selected drugs first launched in the United States between 2017 and 2022, examining absolute and relative lag between China and the first-launch country (including submission and review lag). These delays with drugs approved in the European Union and Japan during the same period were compared with uncover the roots of delays in China, further identifying potential factors that could reduce these delays. The results indicate that the National Medical Products Administration (NMPA) has a longer relative lag compared with the European Medicines Agency (EMA) and the Pharmaceuticals and Medical Devices Agency (PMDA). The submission lag time of the NMPA significantly surpasses that of the EMA and PMDA, whereas the review lag time of the NMPA exceeds that of the PMDA but falls short of the EMA. Focusing on clinical trial strategies, bridging trials and multiregional clinical trials (MRCTs) are typically required by the NMPA in East Asia, resulting in longer clinical delay time. Whereas the EMA and PMDA primarily require international MRCTs in Europe and America, with a clinical delay of < 5 months. It is evident that there is a significant gap in clinical trial durations between China and other countries. Further optimization of clinical trial management is necessary to address the lag for new drugs in China.

Pathway to Approval of Innovative Radiopharmaceuticals in China

Since the late 1950s, radiopharmaceuticals have been used for diagnosis and treatment in clinical nuclear medicine in China. Over the decades, China has successfully established a relatively sophisticated system for radiopharmaceutical production and management, supported by state-of-the-art facilities. With the rapid growth of the national economy, the radiopharmaceutical market in China is expanding at a remarkable pace. This burgeoning market has led to an escalating demand for clinical-stage radiopharmaceuticals, either produced domestically or imported. Despite this positive trajectory, the development and application of radiopharmaceuticals in China have been hindered by several challenges that persist, such as inadequate research, insufficient investment, limited availability of radionuclides, shortage of trained personnel in related fields, and imperfections in policies and regulations. In an exciting development, the regulation reforms implemented since 2015 have positively affected China's drug regulatory system. The introduction of the "Mid- and Long-Term Development Plan (2021-2035) for Medical Isotopes" created concurrently an opportune environment for the advancement of innovative radiopharmaceuticals. In this review, we aim to provide an overview of the approval process for novel radiopharmaceuticals by the National Medical Products Administration and the status of radiopharmaceuticals in research and development in China. Preclinical development and clinical translation of radiopharmaceuticals are undergoing rapid evolution in China. As practitioners in the field in China, we provide several practical suggestions to stimulate open discussions and thoughtful consideration.

Assessment of the implementation of accelerated drug marketing registration procedures for antineoplastic and immunomodulating agents in China: based on 2016-2022 review data

Objective

Since 2016, China has successively implemented Accelerated Drug Marketing Registration Procedures (ADMRPs) for drugs, including Breakthrough Therapy Drug (BTD), Conditional Approval (CA), and Priority Review and Approval (PRA), which have played an important role in promoting the development and review of clinically urgently needed drugs. In this study, we focused on the antineoplastic and immunomodulating agents approved for marketing through ADMRPs, to provide a reference for promoting the formation of a stable and mature regulatory system for the review and approval of antineoplastic drugs and immunomodulating agents in China.

Methods

Reviewed the National Medical Products Administration (NMPA) drug review reports for the years 2016-2022 and screened the antineoplastic and immunomodulating agents approved through ADMRPs. Then, with the help of the NMPA website and the Yaozhi Database, two researchers independently queried and entered the detailed information of the selected drugs, and checked with each other. The attribute classification and main characteristics of the drugs were then analyzed with descriptive statistics to obtain the trend of drug types, drug review and approval status, and timeliness.

Results

A total of 206 antineoplastic and immunomodulating agents were approved for marketing through five accelerated marketing registration procedures (or procedure combinations), with the average review time shortened by about 81 days. Among them, imported drugs accounted for a larger proportion, the most drugs for treating non-small cell lung cancer and lymphoma, and the largest number of PD-1/PDL-1 inhibitors, but pediatric drugs and rare disease drugs accounted for a smaller proportion.

Conclusion

ADMRPs can promote the accessibility of antineoplastic and immunomodulating agents in China and safeguard the life and health rights of more patients. Nevertheless, it is necessary to pay attention to the expansion of the types of indications for medicines and to increase the development of drugs that are urgently needed by a small number of patients.

Bridging the new drug access gap between China and the United States and its related policies

Introduction: The access gap for novel pharmaceuticals between China and the developed countries is a major public health issue in China. It is crucial to understand the determinants of this gap to ensure timely access to new drugs and enhance patient health. Methods: We included all new drugs approved by the US Food and Drug Administration (FDA) between 2012 and 2019, and collected their approval timings in China. Major factors of interest comprised orphan designation and expedited review pathways granted by the FDA, along with the proportion of Asian subjects in the pivotal trial supporting the FDA approval and whether the trial included study sites in China. The elapsed time from the FDA approval to the market authorization in China constituted the time-to-event outcome, and Cox proportional-hazards regression was used for multivariate analysis. Results: A total of 327 new drugs were approved by the FDA between 2012 and 2019, among which 41.3% were found to be authorized in China as of 1 November 2023. The median lag time for the mutually approved drugs was 3.5 years. The Cox model found that orphan drugs had lower likelihood of being approved in China (HR = 0.59, 95% CI 0.39-0.89; p = 0.011), while the FDA's Breakthrough-Therapy drugs (HR = 2.33, 95% CI 1.39-3.89; p = 0.001) and Fast-Track drugs (HR = 1.58, 95% CI 1.05-2.38; p = 0.028) had shorter lag times. In the pivotal trials that supported the FDA approvals, a higher proportion of Asian subjects was associated with faster drug entry into the Chinese market (HR = 1.02, 95% CI 1.01-1.03; p < 0.001), and the inclusion of study sites in China mainland was likewise conducive to reducing the drug lag (HR = 5.30, 95% CI 3.20-8.77; p < 0.001). After the trials with China-based sites supported the FDA approvals, 77.8% of the trials also supported the subsequent approvals in China. Discussion: China's involvement in global drug co-development can streamline clinical development, by reducing repeated trials solely in the Chinese population. This is primarily due to the openness of the Chinese drug agency towards overseas clinical data and is a positive sign that encourages global drug developers to include Chinese patients in their development plans as early as possible.

Characteristics of Asian Participation in Multi-regional Clinical Trials Reviewed for Drug Approval in Japan: Opportunities for Collaboration Between South-East Asia, East Asia, and Japan

Although the percentage of multi-regional clinical trials (MRCTs) submitted for drug approval in Japan increased significantly since the 2007 publication of the regulatory guideline, "Basic principles on global clinical trials", strategic collaborations between Asian countries will be important to promote MRCTs in accordance with the ICH E17 guideline published in 2017. In this study, characteristics of MRCTs reviewed for drug approval in Japan, especially those with participation by South-East Asia and East Asia, were investigated to explore opportunities for collaborations on global drug development in Asia. More than 90% of reviewed trials were conducted as global MRCTs. In addition to Japan, South-East Asia has participated in various types of MRCTs in terms of total numbers of subjects and countries. However, South-East Asia participation was lower in large-size MRCTs (total sample size ≥ 1000) than in middle- (500 ≤ total sample size < 1000) and small-size MRCTs (total sample size < 500). Furthermore, similar clinical trials for the same indications to the MRCTs without South-East Asia were rarely conducted separately in South-East Asia. Participation of other Asian countries did not affect the percentage of Japanese subjects enrolled in an MRCT, but did significantly increase the percentage of participating Asian subjects. These results suggest that additional opportunities for collaboration on MRCTs may be possible between Japan and other Asian countries, especially more collaborations with South-East Asia in the large-size MRCTs. More data of Asian populations from MRCTs will be useful for exploring an important ethnic factor affecting drug response, and will provide a sound scientific basis in considering the application of the pooled data concept in Asia, as described in the ICH E17 guideline.