Basilea announces presentation of interim phase 1/2a clinical data with anticancer drug candidate BAL101553 at ASCO meeting
(Thomson Reuters ONE) -
Basilea Pharmaceutica AG /
Basilea announces presentation of interim phase 1/2a clinical data with
anticancer drug candidate BAL101553 at ASCO meeting
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The issuer is solely responsible for the content of this announcement.
Basel, Switzerland, June 6, 2017 - Basilea Pharmaceutica Ltd. (SIX: BSLN)
announced today that updates were presented on the ongoing clinical phase 1/2a
program with its anticancer drug candidate BAL101553, a novel tumor checkpoint
controller, at the American Society of Clinical Oncology (ASCO) annual meeting
in Chicago on June 2-6, 2017.
"We are pleased with the progress in our phase 1/2a clinical program evaluating
BAL101553 in patients with advanced solid tumors and glioblastoma," said Prof.
Achim Kaufhold, Chief Medical Officer of Basilea. "Daily oral administration
provides an improved therapeutic window over a weekly 2-hour infusion, the
previously evaluated regimen. We look forward this year to completing the dose-
escalation in our clinical studies exploring daily oral dosing and weekly 48-
hour continuous infusion in patients with solid tumors."
In a previously conducted phase 1/2a study with weekly 2-hour intravenous (i.v.)
infusion of BAL101553, dose-limiting vascular effects were observed.(1) These
appeared to be related to the maximum plasma concentration (C(max)), while non-
clinical models indicated that the antiproliferative effect of the drug
candidate is driven by total exposure (area under the curve, AUC). Therefore,
Basilea initiated two clinical phase 1/2a studies to explore different dosing
regimens to maximize the AUC and minimize the C(max). The overview and design of
these ongoing studies as well as first interim data were presented at the ASCO
meeting.
In an open-label phase 1/2a study, Basilea is exploring once-daily oral dosing
of BAL101553 in adult patients with advanced solid tumors who failed standard
therapy. In the cohorts completed so far, there was a dose-proportional up to
five-fold higher weekly exposure at reduced maximum plasma concentrations
compared with 2-hour weekly infusion. Oral BAL101553 had no effect on blood
pressure and the vascular toxicity observed with the 2-hour i.v. regimen was not
seen when using oral daily dosing. Of the 19 patients evaluated so far, eight
had stable disease as best objective response. The determination of the maximum
tolerated dose (MTD) is expected to be achieved in 2017.
Given the absence of vascular toxicity of oral BAL101553 and based on promising
antitumor activity of BAL101553 in preclinical models of brain cancer,(2, 3, 4)
the study with once-daily oral BAL101553 was amended in late 2016 to enroll
adult patients with recurrent or progressive glioblastoma after prior
radiotherapy with or without chemotherapy. Phase 1 dose-escalation is currently
ongoing to determine the MTD, characterize dose-limiting toxicities and assess
the pharmacokinetic (PK), pharmacodynamics (PD) and antitumor properties of oral
BAL101553 in this patient population. Two cohorts have been completed without
dose-limiting toxicities. Glioblastoma is the most common primary brain tumor
and one of the most lethal types of cancer.
In another phase 1/2a clinical study, Basilea is exploring weekly 48-hour
continuous infusion of BAL101553 as an alternative high exposure/low maximum
concentration dosing regimen. This study is conducted with adult patients with
advanced solid tumors. Two dose cohorts have been completed so far without
observation of vascular toxicity. The study continues with expected completion
of dose-escalation towards the end of 2017.
+------------------------------------------------------------------------------+
|BAL101553 posters at ASCO 2017 |
| * Phase 1/2a trial of daily oral BAL101553, a novel tumor checkpoint |
| controller (TCC), in advanced solid tumors - R S. Kristeleit, T.R. J. |
| Evans, A. H. Ingles Garces, S. Slater, Y. Drew, M.-J. Devlin, N. R. Md |
| Haris, N. Diamantis, J. MacDonald, F. Bachmann, A. L. Hannah, S.Anderson, |
| H. A. Lane, A. Schmitt-Hoffmann, P. McKernan, M. F. Engelhardt, A. |
| Greystoke, R. Miller, E. R. Plummer, J. S. Lopez; abstract 2532 |
| * A phase 1 study to assess the safety, pharmacokinetics (PK), |
| pharmacodynamics (PD) and antitumor activities of daily oral BAL101553, a |
| novel tumor checkpoint controller (TCC) in adult patients with progressive|
| or recurrent glioblastoma (GBM) or high-grade glioma - A. H. Ingles |
| Garces, E. R. Plummer, J. S. Lopez, R. S. Kristeleit, J. MacDonald, |
| L. Sweeting, M.-J. Devlin, Y. Drew, A. L. Hannah, N. Aceto, S. Anderson, |
| H. A Lane, P. Larger, M. Maurer, P. McKernan, M. F. Engelhardt, A. |
| Greystoke, N. Coleman, T. R. J. Evans, P. J. Mulholland; abstract TPS2601 |
| * A phase 1 study to assess the safety, pharmacokinetics (PK), |
| pharmacodynamics (PD) and antitumor activities of BAL101553, a novel tumor|
| checkpoint controller (TCC), administered as 48-hour infusion in adult |
| patients with advanced solid tumors - M. Joerger, A. Stathis, I. Metaxas, |
| D. Hess, A. G. Omlin, G. Mayer, S. Gaggetta, S. Anderson, M. G. |
| Pasqualotto, F. Hutter, N. Levy, S. Stuedeli, M. Landau-Salzberg, |
| P. McKernan, H. A. Lane, P. Larger, R. Scheerlinck, M. F. Engelhardt, R. |
| Von Moos, C. Sessa; abstract TPS2602 |
+------------------------------------------------------------------------------+
For further information please visit https://am.asco.org/.
About BAL101553
Basilea's small molecule oncology drug candidate BAL101553 (the prodrug of
BAL27862)(5) is being developed as a potential therapy for diverse cancers.
BAL101553 is currently undergoing clinical phase 1/2a evaluation in patients
with advanced solid tumors or glioblastoma (brain cancer). In preclinical
studies, the drug candidate demonstrated in-vitro and in-vivo activity against
diverse treatment-resistant cancer models, including tumors refractory to
conventional approved therapeutics and radiotherapy.(6, 7, 8) BAL101553
efficiently distributes to the brain, with anticancer activity in glioblastoma
models.(2, 3, 4) The active moiety BAL27862 binds the colchicine site of tubulin
with distinct effects on microtubule organization,(9) resulting in the
activation of the "spindle assembly checkpoint" which promotes tumor cell
death.(10)
About Basilea
Basilea Pharmaceutica Ltd. is a biopharmaceutical company developing products
that address the medical problem of increasing resistance and non-response to
current treatment options in the therapeutic areas of bacterial infections,
fungal infections and cancer. The company uses the integrated research,
development and commercial operations of its subsidiary Basilea Pharmaceutica
International Ltd. to discover, develop and commercialize innovative
pharmaceutical products to meet the medical needs of patients with serious and
life-threatening conditions. Basilea Pharmaceutica Ltd. is headquartered in
Basel, Switzerland and listed on the SIX Swiss Exchange (SIX: BSLN). Additional
information can be found at Basilea's website www.basilea.com.
Disclaimer
This communication expressly or implicitly contains certain forward-looking
statements concerning Basilea Pharmaceutica Ltd. and its business. Such
statements involve certain known and unknown risks, uncertainties and other
factors, which could cause the actual results, financial condition, performance
or achievements of Basilea Pharmaceutica Ltd. to be materially different from
any future results, performance or achievements expressed or implied by such
forward-looking statements. Basilea Pharmaceutica Ltd. is providing this
communication as of this date and does not undertake to update any forward-
looking statements contained herein as a result of new information, future
events or otherwise.
For further information, please contact:
+-------------------------------------------------------+
| Peer Nils Schröder, PhD |
| Head of Corporate Communications & Investor Relations |
| +41 61 606 1102 |
| media_relations(at)basilea.com |
| investor_relations(at)basilea.com |
+-------------------------------------------------------+
This press release can be downloaded from www.basilea.com.
References
1 J. Lopez et al. Phase 1/2a trial of intravenous BAL101553, a novel tumor
checkpoint controller (TCC), in advanced solid tumors. Journal of Clinical
Oncology 2016 (34), suppl., abstract 2525
2 R. Bergès et al. The novel tubulin-binding checkpoint activator BAL101553
inhibits EB1-dependent migration and invasion and promotes differentiation of
glioblastoma stem-like cells. Molecular Cancer Therapeutics 2016 (15), 2740-2749
3 A. Schmitt-Hoffmann et al. BAL27862: a unique microtubule-targeted agent
with a potential for the treatment of human brain tumors. AACR-NCI-EORTC
symposium 2009, abstract C233; Molecular Cancer Therapeutics 2009, 8 (12
Supplement)
4 A. C. Mladek et al. The novel tubulin-binding 'tumor checkpoint controller'
BAL101553 has anti-cancer activity alone and in combination treatments across a
panel of GBM patient-derived xenografts. American Association for Cancer
Research (AACR) annual meeting 2016, abstract 4781
5 J. Pohlmann et al. BAL101553: An optimized prodrug of the microtubule
destabilizer BAL27862 with superior antitumor activity. American Association for
Cancer Research (AACR) annual meeting 2011, abstract 1347; Cancer Research
2011, 71 (8 Supplement)
6 A. Broggini-Tenzer et al. The novel microtubule-destabilizing drug BAL101553
(prodrug of BAL27862) sensitizes a treatment refractory tumor model to ionizing
radiation. EORTC-NCI-AACR symposium 2014, abstract 202
7 G. E. Duran et al. In vitro activity of the novel tubulin active agent
BAL27862 in MDR1(+) and MDR1(-) human breast and ovarian cancer variants
selected for resistance to taxanes. American Association for Cancer Research
(AACR) annual meeting 2010, abstract 4412
8 F. Bachmann et al. BAL101553 (prodrug of BAL27862): A unique microtubule
destabilizer active against drug refractory breast cancers alone and in
combination with trastuzumab. American Association for Cancer Research (AACR)
annual meeting 2014, abstract 831
9 A. E. Prota et al. The novel microtubule-destabilizing drug BAL27862 binds
to the colchicine site of tubulin with distinct effects on microtubule
organization. Journal of Molecular Biology 2014 (426), 1848-1860
10 F. Bachmann et al. BAL101553 (prodrug of BAL27862): the spindle assembly
checkpoint is required for anticancer activity. American Association for Cancer
Research (AACR) annual meeting 2015, abstract 3789
Press release (PDF):
http://hugin.info/134390/R/2110182/801957.pdf
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Source: Basilea Pharmaceutica AG via GlobeNewswire
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Datum: 06.06.2017 - 07:15 Uhr
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