TetraLogic Pharmaceuticals (TLOG -59%) haltspatient enrollment in a Phase 1 ascending dose trial of its lead product candidate, birinapant, in patients with chronic hepatitis B infection due to cranial nerve palsies observed in the first cohort. No additional details are provided.
Birinapantis also being investigated for the potential treatment of multiple cancers. It is an SMAC-mimetic that binds to proteins called Inhibitor of Apoptosis proteins, or IAPs, that suppress apoptosis (cell death). SMAC, Second Mitochondrial Activator of Caspases, is a naturally occurring IAP inhibitor. Cancer cells and cells infected with certain viruses (hep B) have apoptosis-escaping characteristics. Inhibiting the mechanisms that enable rogue cells to avoid cell death increases apoptosis and potentially delivers a therapeutic benefit.
作者: StephenW 时间: 2015-5-7 00:14
TetraLogic停在birinapant乙肝试验注册;股暴跌
2015年5月6日,10:48 ET |关于:TetraLogic Pharmaceuti ...(TLOG)|通过:道格拉斯W.房子,SA新闻编辑[联系这个编辑器评论或新闻提示]
TetraLogic Announces Temporary Halt of Chronic Hepatitis B Trial
MALVERN, Pa., May 6, 2015 (GLOBE NEWSWIRE) -- TetraLogic Pharmaceuticals Corporation (Nasdaq:TLOG), a clinical-stage biopharmaceutical company focused on discovering and developing novel small molecule therapeutics in oncology and infectious diseases, today announced that it has temporarily halted enrollment in the birinapant chronic hepatitis B multiple ascending dose trial, currently being conducted in Australia, due to cranial nerve palsies observed in the first cohort.
About TetraLogic Pharmaceuticals Corporation
TetraLogic is a clinical-stage biopharmaceutical company focused on discovering and developing novel small molecule therapeutics in oncology and infectious diseases. TetraLogic has two clinical-stage product candidates in development: birinapant and SHAPE. Birinapant is currently being tested in Phase 1 and Phase 2 clinical trials for hematological malignancies and solid tumors, and is also being tested in a Phase 1b/2a clinical trial in hepatitis B. SHAPE is currently being tested in a Phase 2 clinical trial for early-stage cutaneous T‑cell lymphoma.
Forward Looking Statements
Some of the statements in this release are forward looking statements within the meaning of Section 27A of the Securities Act of 1933, Section 21E of the Securities Exchange Act of 1934 and the Private Securities Litigation Reform Act of 1995, which involve risks and uncertainties. These statements relate to future events or TetraLogic's pre-clinical and clinical development of birinapant, SHAPE and other clinical programs, future expectations, plans and prospects. Although TetraLogic believes that the expectations reflected in such forward-looking statements are reasonable as of the date made, expectations may prove to have been materially different from the results expressed or implied by such forward-looking statements. TetraLogic has attempted to identify forward looking statements by terminology including ''believes,'' ''estimates,'' ''anticipates,'' ''expects,'' ''plans,'' ''projects,'' ''intends,'' ''potential,'' ''may,'' ''could,'' ''might,'' ''will,'' ''should,'' ''approximately'' or other words that convey uncertainty of future events or outcomes to identify these forward-looking statements. These statements are only predictions and involve known and unknown risks, uncertainties, and other factors, including those discussed under the heading "Risk Factors" in our Annual Report on Form 10-K filed with the SEC on February 26, 2015. Any forward-looking statements contained in this release speak only as of its date. We undertake no obligation to update any forward-looking statements contained in this release to reflect events or circumstances occurring after its date or to reflect the occurrence of unanticipated events.
Bell’s palsy (BP) risk, is a known and reversible side effect of SMAC mimetics in cancer trials
贝尔氏麻痹(BP)的风险,是Smac模拟物在癌症临床试验已知的和可逆的副作用
http://meetinglibrary.asco.org/content/115322-132
B-associated toxicity of Bell’s palsy (Grade 2) was considered a DLT (Dose Limiting Toxicities) and noted at higher dose levels for I, D, and LD, but not CP.
This unusual reversible toxicity occurred during cycle 1 in 7 pts. Six of these pts continued therapy without recurrence. PK studies demonstrated no effect of B on CT. Except for CP, CT did not change the PK of B. CP increased plasma PK for B, possibly due to OATP1B3 transporter effects, but without increased B toxicities.
sorte
In clinical trials, birinapant has been associated with the onset of cranial nerve palsies, meaning a weakness or paralysis of the areas served by the affected cranial nerve. Across the entirety of the clinical program to date, there have been 18 cases of cranial nerve palsy, of which all but two have been mild to moderate in severity. These events have been transient and responsive to therapy. Some subjects who reported a cranial nerve palsy elected to continue birinapant treatment, and none had a recurrent event of cranial nerve palsy.
The majority of events have affected the VII cranial nerve and caused a Bell’s palsy, i.e., a weakness affecting one side of the face. All but one case of Bell’s palsy has occurred in subjects receiving a weekly cumulative dose of birinapant of 22mg/m2 or higher. However, one event was reported in a subject receiving a cumulative dose of 4.2mg/m2. The onset of Bell’s palsy typically occurs after the third dose of birinapant and is preceded by a prodromal syndrome of headache, ear or eye pain. Thus, we believe it may be possible to mitigate the onset of the cranial nerve palsy by intervening with either non-steroidal anti-inflammatory drugs ( NSAIDs) or corticosteroids at the time of the prodromal syndrome and deferring the next dose of birinapant. This procedure is being implemented in all of the clinical programs.
3 hours
To: 80percenthidebrain
it all depends if it can be recovered easily, prevented, controlled
if we consider hcc treatment you can bear sides like that if the other choice is death....if it is to clear an inactive hbv it must be a reversible side
studyforhope
2 hours
The Bell's palsy caused by BIRINAPANT is not the same as regular spontaneous Bell's palsy. It will typically disappear fast upon discontinuation of the drug. Methyl cobalamin injections will speed up recovery and might possibly have preventative effects. However i doubt that the situation is handled this way.
We do not know at which dose level and what frequency this problem occurred. One can only hope that the trial will continue after it has cleared up.
sorte
2 hours
thanks man !! the part hope in your nickname is well deserved, study as well btw
twinboys1girl4me
1 hour
To: studyforhope
Good to know. This initially worried me as I do know someone that got Bell's out of the blue and is still completely debilitated for over 2 years now, without much improvement and tons of therapy.
Do you think they will restart the trial if others want to go forward, or do you think the FDA will shut it down? You are very knowledgeable and I am very new to the background of how trials function. I was really hoping for great news from this one, as I know we all were. Let's just hope it's not a complete wash.
studyforhope
11 minutes
To: twinboys1girl4me
it is hard to predict how the fda will react. the recovery process from the palsy and speed will also determine that. it should only take 2 weeks to recover, but i dont know if they will use methylcobalamine to speed up recovery.
May 6, 2015
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TetraLogic Announces Temporary Halt of Chronic Hepatitis B Trial
MALVERN, Pa., May 6, 2015 (GLOBE NEWSWIRE) -- TetraLogic Pharmaceuticals Corporation (Nasdaq:TLOG), a clinical-stage biopharmaceutical company focused on discovering and developing novel small molecule therapeutics in oncology and infectious diseases, today announced that it has temporarily halted enrollment in the birinapant chronic hepatitis B multiple ascending dose trial, currently being conducted in Australia, due to cranial nerve palsies observed in the first cohort.
2015年5月6日
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TetraLogic宣布慢性乙型肝炎审判暂时停止