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venetoclax (US version)
Photo courtesy of Abbvie
The Australian Therapeutic Goods Administration (TGA) has approved the BCL-2 inhibitor venetoclax (Venclexta™, formerly ABT-199) for use in certain patients with chronic lymphocytic leukemia (CLL).
The drug is now approved to treat Australian patients with relapsed or refractory CLL who have 17p deletion or no other treatment options.
Venetoclax is being developed by AbbVie and Genentech, a member of the Roche Group. The drug is jointly commercialized by the companies in the US and by AbbVie outside of the US.
Now that venetoclax has been approved by the TGA, it can be registered on the Australian Register of Therapeutic Goods and legally marketed and sold in Australia.
To make the drug affordable to the Australian public, the manufacturer can apply to the Pharmaceutical Benefits Advisory Committee to have the cost of the drug subsidized by the Australian government on the Pharmaceutical Benefits Scheme (PBS).
Venetoclax is not listed on the PBS. Historically, the delay between TGA approval and PBS listing ranges from 14 months to 31 months for cancer drugs.
Phase 2 trials
Venetoclax has produced high objective response rates (ORR) in two phase 2 trials of CLL patients.
In one of these trials, researchers tested venetoclax in 107 patients with previously treated CLL and 17p deletion. The results were published in The Lancet Oncology in June 2016.
The ORR in this trial was 79%. At the time of analysis, the median duration of response had not been reached. The same was true for progression-free survival and overall survival.
The progression-free survival estimate for 12 months was 72%, and the overall survival estimate was 87%.
The incidence of treatment-emergent adverse events was 96%, and the incidence of serious adverse events was 55%.
Grade 3 laboratory tumor lysis syndrome (TLS) was reported in 5 patients. Three of these patients continued on venetoclax, but 2 patients required a dose interruption of 1 day each.
In the second trial, researchers tested venetoclax in 64 patients with CLL who had failed treatment with ibrutinib and/or idelalisib. Results from this trial were presented at the 2016 ASH Annual Meeting.
The ORR was 67%. At 11.8 months of follow-up, the median duration of response, progression-free survival, and overall survival had not been reached. The estimated 12-month progression-free survival was 80%.
The incidence of adverse events was 100%, and the incidence of serious adverse events was 53%. No clinical TLS was observed, but 1 patient met Howard criteria for laboratory TLS.
In the past, TLS has caused deaths in patients receiving venetoclax. In response, AbbVie stopped dose-escalation in patients receiving the drug and suspended enrollment in phase 1 trials.
However, researchers subsequently found that a modified dosing schedule, prophylaxis, and patient monitoring can reduce the risk of TLS. 
venetoclax (US version)
Photo courtesy of Abbvie
The Australian Therapeutic Goods Administration (TGA) has approved the BCL-2 inhibitor venetoclax (Venclexta™, formerly ABT-199) for use in certain patients with chronic lymphocytic leukemia (CLL).
The drug is now approved to treat Australian patients with relapsed or refractory CLL who have 17p deletion or no other treatment options.
Venetoclax is being developed by AbbVie and Genentech, a member of the Roche Group. The drug is jointly commercialized by the companies in the US and by AbbVie outside of the US.
Now that venetoclax has been approved by the TGA, it can be registered on the Australian Register of Therapeutic Goods and legally marketed and sold in Australia.
To make the drug affordable to the Australian public, the manufacturer can apply to the Pharmaceutical Benefits Advisory Committee to have the cost of the drug subsidized by the Australian government on the Pharmaceutical Benefits Scheme (PBS).
Venetoclax is not listed on the PBS. Historically, the delay between TGA approval and PBS listing ranges from 14 months to 31 months for cancer drugs.
Phase 2 trials
Venetoclax has produced high objective response rates (ORR) in two phase 2 trials of CLL patients.
In one of these trials, researchers tested venetoclax in 107 patients with previously treated CLL and 17p deletion. The results were published in The Lancet Oncology in June 2016.
The ORR in this trial was 79%. At the time of analysis, the median duration of response had not been reached. The same was true for progression-free survival and overall survival.
The progression-free survival estimate for 12 months was 72%, and the overall survival estimate was 87%.
The incidence of treatment-emergent adverse events was 96%, and the incidence of serious adverse events was 55%.
Grade 3 laboratory tumor lysis syndrome (TLS) was reported in 5 patients. Three of these patients continued on venetoclax, but 2 patients required a dose interruption of 1 day each.
In the second trial, researchers tested venetoclax in 64 patients with CLL who had failed treatment with ibrutinib and/or idelalisib. Results from this trial were presented at the 2016 ASH Annual Meeting.
The ORR was 67%. At 11.8 months of follow-up, the median duration of response, progression-free survival, and overall survival had not been reached. The estimated 12-month progression-free survival was 80%.
The incidence of adverse events was 100%, and the incidence of serious adverse events was 53%. No clinical TLS was observed, but 1 patient met Howard criteria for laboratory TLS.
In the past, TLS has caused deaths in patients receiving venetoclax. In response, AbbVie stopped dose-escalation in patients receiving the drug and suspended enrollment in phase 1 trials.
However, researchers subsequently found that a modified dosing schedule, prophylaxis, and patient monitoring can reduce the risk of TLS.
venetoclax (US version)
Photo courtesy of Abbvie
The Australian Therapeutic Goods Administration (TGA) has approved the BCL-2 inhibitor venetoclax (Venclexta™, formerly ABT-199) for use in certain patients with chronic lymphocytic leukemia (CLL).
The drug is now approved to treat Australian patients with relapsed or refractory CLL who have 17p deletion or no other treatment options.
Venetoclax is being developed by AbbVie and Genentech, a member of the Roche Group. The drug is jointly commercialized by the companies in the US and by AbbVie outside of the US.
Now that venetoclax has been approved by the TGA, it can be registered on the Australian Register of Therapeutic Goods and legally marketed and sold in Australia.
To make the drug affordable to the Australian public, the manufacturer can apply to the Pharmaceutical Benefits Advisory Committee to have the cost of the drug subsidized by the Australian government on the Pharmaceutical Benefits Scheme (PBS).
Venetoclax is not listed on the PBS. Historically, the delay between TGA approval and PBS listing ranges from 14 months to 31 months for cancer drugs.
Phase 2 trials
Venetoclax has produced high objective response rates (ORR) in two phase 2 trials of CLL patients.
In one of these trials, researchers tested venetoclax in 107 patients with previously treated CLL and 17p deletion. The results were published in The Lancet Oncology in June 2016.
The ORR in this trial was 79%. At the time of analysis, the median duration of response had not been reached. The same was true for progression-free survival and overall survival.
The progression-free survival estimate for 12 months was 72%, and the overall survival estimate was 87%.
The incidence of treatment-emergent adverse events was 96%, and the incidence of serious adverse events was 55%.
Grade 3 laboratory tumor lysis syndrome (TLS) was reported in 5 patients. Three of these patients continued on venetoclax, but 2 patients required a dose interruption of 1 day each.
In the second trial, researchers tested venetoclax in 64 patients with CLL who had failed treatment with ibrutinib and/or idelalisib. Results from this trial were presented at the 2016 ASH Annual Meeting.
The ORR was 67%. At 11.8 months of follow-up, the median duration of response, progression-free survival, and overall survival had not been reached. The estimated 12-month progression-free survival was 80%.
The incidence of adverse events was 100%, and the incidence of serious adverse events was 53%. No clinical TLS was observed, but 1 patient met Howard criteria for laboratory TLS.
In the past, TLS has caused deaths in patients receiving venetoclax. In response, AbbVie stopped dose-escalation in patients receiving the drug and suspended enrollment in phase 1 trials.
However, researchers subsequently found that a modified dosing schedule, prophylaxis, and patient monitoring can reduce the risk of TLS.