Genetron Holdings Ltd. (GTH) Releases New Data Results of HCCscreen for Liver Cancer Early Screening in China

March 24, 2021 5:01 PM EDT

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Genetron Holdings Limited (“Genetron Health” or the “Company”, NASDAQ: GTH), a leading precision oncology platform company in China that specializes in molecular profiling tests, early cancer screening products and companion diagnostics development, today presented new data and results for HCCscreenTM, a blood-based early screening test for hepatocellular carcinoma (“HCC”).

This multi-center prospective study, named the “HCCscreenTM Investigational Study” (HIT), is a collaboration between Genetron Health and the National Cancer Center China that started in 2019. Among a total of 1,615 HBsAg+ individuals that completed the follow-up phase by February 2021, the primary outcome showed that HCCscreenTM achieved 88% sensitivity and 93% specificity, compared with 71% sensitivity and 95% specificity, respectively, by ultrasound plus alpha-fetoprotein (AFP) combined. HCCscreenTM also achieved 40.9% positive predictive value (PPV) and 99.3% negative predictive value (NPV). The study results are summarized in the following tables:

Table 1. HIT Results: Genetron HCCscreenTM Final Analysis (N=1615)

HCCscreenTM Test

HCC

Non-HCC

Total

Test - Positive

76

110

186

Test - Negative

10

1,419

1,429

Total

86

1,529

1,615

Sensitivity (95% CI)

88% (80%, 94%)

Specificity (95% CI)

93% (91%, 94%)

Table 2. HIT Results: Ultrasound + AFP Final Analysis (N=1615)

Ultrasound + AFP

HCC

Non-HCC

Total

Test - Positive

61

83

144

Test - Negative

25

1,446

1471

Total

86

1,529

1615

Sensitivity (95% CI)

71% (60%, 80%)

Specificity (95% CI)

95% (93%, 96%)

Furthermore, stratified by tumor size, 49% (28/57) of the cases identified by HCCscreenTM were in early stage, i.e. <3cm. These patients are expected to have much better prognosis than advanced stage ones. Additionally, HCCscreenTM achieved sensitivities of 85% for tumor sizes of <3cm, 96% for 3-5cm, and 88% for >5cm. The results are summarized in the following table:

Table 3. HIT Results: Genetron HCCscreenTM Sensitivities by Tumor Size

Tumor Size (N=64)

HCCscreenTM Test

<3cm

3-5cm

>5cm

Total

Test Positive

28

22

7

57

Test Negative

5

1

1

7

Total

33

23

8

64

Sensitivity

85%

96%

88%

Previously, Genetron Health reported preliminary analysis results from the first 297 patients enrolled in the study. Compared with the preliminary results, the confidence interval of sensitivity had improved from 62%-100% to 80%-94%, and the confidence interval of specificity had improved from 89%-96% to 91%-94%. The preliminary study results are summarized in the following table:

Table 4. HIT Results: Genetron HCCscreenTM Preliminary Data (N=297)

HCCscreenTM Test

HCC

Non-HCC

Total

Test - Positive

11

20

31

Test - Negative

1

265

266

Total

12

285

297

Sensitivity (95% CI)

92% (62%, 100%)

Specificity (95% CI)

93% (89%, 96%)

“We are very pleased with the new HCCscreenTM data from this large, prospective cohort study, which showed overall better sensitivity data, and comparable specificity data versus the standard of care. These additional validation updates gave us more confidence about our assay’s performance, and we will move forward to initiate an NMPA registrational study in the second quarter of this year,” said Mr. Sizhen Wang, co-founder and CEO of Genetron Health. “Overall, HCCscreenTM continues to be a leading liquid-biopsy early detection assay in hepatocellular carcinoma. We are delighted with our clinical and commercial progress to bring this product to more patients, and address an unmet, significant medical need in China.”

About HCCscreenTM and Liver Cancer

In September 2020, Genetron Health received the U.S. Food and Drug Administration (“FDA”)’s Breakthrough Device designation for HCCscreenTM, and the product has been commercialized recently as a lab developed test (“LDT”) in China.

Globally, liver cancer is the fourth most common cause of cancer-related death and the sixth in terms of incidence1. China represents the largest market, accounting for almost half of the global incidences. New incidence in China was estimated to be around 393,000 per year, with 369,000 deaths2. Market data by Frost and Sullivan estimated that as of 2019, among the 120 million high risk liver cancer population in China, around 74 million were HBV carriers.

HCCscreenTM is powered by Genetron Health’s innovative and proprietary Mutation CapsuleTM technology, which enables detection of multiple methylation alterations in parallel with mutations in cell-free DNA from peripheral blood specimens.

References:

  1. Villanueva, A. Hepatocellular Carcinoma. N. Engl. J. Med. 2019, 380, 1450–1462.
  2. Globocan 2018. https://gco.iarc.fr/today/data/factsheets/populations/160-china-fact-sheets.pdf. Information on this website is not incorporated into this update and should not be considered part of this update. We have included any website as an inactive textual reference only.

About Genetron Holdings Limited

Genetron Holdings Limited (“Genetron Health” or the “Company”) (Nasdaq: GTH) is a leading precision oncology platform company in China that specializes in cancer molecular profiling and harnesses advanced technologies in molecular biology and data science to transform cancer treatment. The Company has developed a comprehensive oncology portfolio that covers the entire spectrum of cancer management, addressing needs and challenges from early screening, diagnosis and treatment recommendations, as well as continuous disease monitoring and care. Genetron Health also partners with global biopharmaceutical companies and offers customized services and products. For more information, please visit ir.genetronhealth.com.



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