X4 Pharmaceuticals Presents Clinical Data Showing Combination of X4P-001 and Opdivo® (nivolumab) Improved Clinical Responses in RCC Patients Unresponsive to Opdivo Monotherapy

On October 19, 2018 X4 Pharmaceuticals, a clinical stage biotechnology company developing novel CXCR4 antagonists to improve immune cell trafficking to treat cancer and rare disease, reported results from a pilot study of X4P-001-IO in combination with Opdivo (nivolumab) in patients with clear cell renal cell carcinoma (ccRCC) who are non-responsive to the anti-PD-1 checkpoint inhibitor Opdivo alone (Press release, X4 Pharmaceuticals, OCT 19, 2018, View Source [SID1234529985]). The data will be presented at a Poster Discussion session at CThe data from this study demonstrate that the combination with X4P-001-IO and nivolumab has the potential to augment responses in patients who previously received the anti-PD-1 checkpoint inhibitor nivolumab alone," said Toni K. Choueiri, M.D. Director, Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, and lead investigator of the study. "This pilot study data requires validation in larger studies as we continue to seek treatments to address the larger population of cancer patients who do not adequately respond to checkpoint inhibitors."

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Results were presented from the nine patients with advanced ccRCC enrolled in the pilot study (as of August 1, 2018) who were non-responsive to single agent Opdivo with either stable or progressive disease. Enrolled patients received X4P-001-IO (400 mg, oral, once daily) and continued to receive standard bi-weekly Opdivo therapy. Median duration of treatment with the combination was 3.7 months (range 1-15 months).

Highlights of the data presented at ESMO (Free ESMO Whitepaper) include:

X4P-001-IO in combination with Opdivo was tolerable in ccRCC patients. The most frequent drug related adverse events were diarrhea, nasal congestion, ALT/AST increase, dry eye, fatigue. No grade 4 or 5 adverse events occurred. All Grade 3/serious adverse events were manageable with appropriate intervention.
Combination therapy with X4P-001-IO and Opdivo exhibited anti-tumor activity in some patients with advanced ccRCC who were previously unresponsive to Opdivo monotherapy.
Four patients who had progressed on prior Opdivo monotherapy had a best response of stable disease with the additional X4P-001-IO to Opdivo treatment.
Of the five patients who were stable on prior Opdivo monotherapy, one had a partial response with combination therapy of X4P-001-IO and Opdivo.
Serum biomarker analyses identified significant early changes in cytokines and chemokines, including CXCL9, a chemoattractant ligand for cytotoxic T cell migration.
"These findings add to our clinical experience with X4P-001-IO and our growing understanding of combining CXCR4 antagonists with other agents, such as checkpoint inhibitors," said Ken Gorelick, M.D., Chief Medical Officer of X4 Pharmaceuticals. "X4 continues to explore the important role that CXCR4 antagonism may play in augmenting anti-tumor response in combination with other cancer therapeutic modalities, and therefore, potentially improve outcomes for cancer patients."

About X4P-001-IO in Cancer
X4P-001-IO is an investigational selective, oral, small molecule antagonist of C-X-C receptor type 4 (CXCR4). CXCR4 is a chemokine receptor present in abundance on certain immune cells and cancer cells and it plays a critical role in immune cell trafficking, infiltration and activation in the tumor microenvironment. CXCR4 signaling is disrupted in a broad range of cancers, facilitating tumor growth by allowing cancer cells to evade immune detection and creating a pro-tumor microenvironment. X4P-001-IO has the ability to help restore immunity within the tumor microenvironment and has the potential to enhance the anti-tumor activity of approved and emerging oncology agents, such as checkpoint inhibitors and targeted therapies. X4P-001-IO is being investigated in several clinical studies in solid tumors.

Real-world study shows using Giotrif®/Gilotrif® (afatinib) followed by osimertinib provides a median of 27.6 months of chemotherapy-free time in patients with EGFR mutation-positive NSCLC

On October 19, 2018 Boehringer Ingelheim reported results from GioTag, a real-world retrospective study which examined the impact of first-line Giotrif/Gilotrif (afatinib) followed by osimertinib, in epidermal growth factor receptor mutation-positive (EGFR M+) non-small cell lung cancer (NSCLC) patients with acquired T790M mutations, the most common mechanism of resistance to first- and second-generation EGFR tyrosine kinase inhibitors (TKIs) (Press release, Boehringer Ingelheim, OCT 19, 2018, View Source [SID1234529984]). The results showed that the sequential strategy was effective in delaying subsequent chemotherapy treatment and were published today in the journal Future Oncology.

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According to the study, the median time on treatment for sequential afatinib and osimertinib was 27.6 months. In this broad, real-world population, the clinical benefit was consistent across all patient subgroups, with particularly encouraging results seen in those with exon 19 deletion (Del19)-positive disease (median time on treatment 30.3 months) and Asian patients (median time on treatment 46.7 months). Additionally, the 2 year and 2.5 year overall survival (OS) rates were 78.9% and 68.8%, respectively.1

Among the patients included in this study, 15.3% had a poor performance status at the start of afatinib treatment (as defined by ECOG performance status ≥2), ordinarily precluding them from clinical trials.1

While osimertinib is an effective first-line treatment,2 there is a lack of approved subsequent TKI treatment options, and many patients progress to chemotherapy following osimertinib failure.1 The results suggest that the sequential strategy of afatinib and osimertinib might offer sustained clinical benefit to a substantial number of patients, prolonging the chemotherapy-free treatment period.1

"With more targeted treatment options becoming available, it is important to understand the impact of multiple lines of targeted therapies on patient outcomes," said Dr. Maximilian J. Hochmair, Medical Oncologist, Department of Respiratory and Critical Care Medicine, Otto Wagner Hospital and coordinating investigator in the trial. "The results of GioTag show that sequential treatment with afatinib and osimertinib is an attractive strategy in patients with EGFR mutation-positive NSCLC, offering a sustained clinical benefit to a substantial number of patients while – importantly – extending the time patients are kept off chemotherapy."

Dr. Victoria Zazulina, Global Head of Solid Tumour Oncology, Medicine at Boehringer Ingelheim, said, "We saw through a recent global survey published at WCLC that many physicians do not feel they have enough information to make informed treatment decisions on how to make the most of the available targeted treatments for patients with EGFR M+ NSCLC; in the absence of randomised data, real-world evidence may help inform treatment decisions. GioTag is the first global study in EGFR M+ NSCLC looking at the sequencing of targeted therapies as it is used in daily clinical practice. These results will provide more insights on the use of EGFR TKIs, looking beyond first-line to maximise overall longer-term impact of targeted therapies in NSCLC."

Results of a recent global survey of HCPs’ attitudes about sequencing treatments for EGFR M+ NSCLC patients are available here. Full results from the GioTag study will be presented at an upcoming medical conference later this year.

Clovis Oncology Presents Initial Results from the Ongoing Rubraca® (rucaparib) TRITON Program in Metastatic Castration Resistant Prostate Cancer (mCRPC) at ESMO 2018 Congress

On October 19, 2018 Clovis Oncology, Inc. (NASDAQ: CLVS) reported initial data from its ongoing Phase 2 TRITON2 clinical trial of Rubraca at the ESMO (Free ESMO Whitepaper) 2018 Congress (European Society for Medical Oncology) (Press release, Clovis Oncology, OCT 19, 2018, View Source [SID1234529983]). The data show a 44% confirmed objective response rate (ORR) by investigator assessment in 25 RECIST* /PCWG3** response-evaluable patients with a BRCA1/2 alteration. The median duration of response in these patients has not yet been reached. In addition, a 51% confirmed prostate specific antigen (PSA) response rate was observed in 45 PSA response-evaluable patients with a BRCA1/2 alteration.

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The TRITON2 results were the basis for Breakthrough Therapy designation for Rubraca as a monotherapy treatment of adult patients with BRCA1/2 mutated mCRPC who have received at least one prior androgen receptor (AR)-directed therapy and taxane-based chemotherapy, which was granted on October 2, 2018 by the U.S. Food and Drug Administration (FDA). These data will be highlighted in a poster authored by Dr. Wassim Abida, Medical Oncologist, Memorial Sloan Kettering Cancer Center, and principal investigator for the TRITON2 study. The data have been selected for a poster discussion session that will be led by invited discussant Dr. Joaquin Mateo, of the Prostate Cancer Translational Research Group, Vall d’Hebron Institute of Oncology (VHIO) on 21 October at 09:15-9:40 CEST.

"Rubraca has previously demonstrated antitumor activity in its approved indications for women with advanced ovarian cancer," said Dr. Abida. "These new data show that Rubraca may also offer a new approach for the treatment of mCRPC associated with BRCA1 and BRCA2 alterations, with the potential to achieve a clinical response in patients with few remaining therapy options."

Patients enrolled in the TRITON2 study had received prior treatment with at least one androgen receptor (AR)-directed therapy and taxane-based chemotherapy and were screened for a deleterious germline or somatic alteration in BRCA1, BRCA2 or one of 13 other pre-specified homologous recombination (HR) genes. Study participants were allocated into three cohorts based on the type of gene alteration and disease status, which was determined by genomic sequencing and RECIST criteria, respectively. Each cohort received 600mg Rubraca twice daily and were grouped based on the following criteria: A) alteration in either BRCA1, BRCA2 or ATM genes, with tumors that can be measured with visceral and/or nodal disease; B) alteration in either BRCA1, BRCA2 or ATM genes, with tumors that cannot be measured with visceral and/or nodal disease, or C) alteration in another HR gene associated with sensitivity to PARP inhibition, with or without measurable disease. The primary study endpoints include confirmed ORR per RECIST/PCWG3 in patients with measurable disease at baseline and PSA response in patients with no measurable disease at baseline. Secondary endpoints include overall survival (OS), clinical benefit rate, and safety and tolerability.1

As of the visit cut-off date of June 29, 2018, 85 patients were treated with Rubraca; the overall median treatment duration was 3.7 (range, 0.5–12.9) months and median follow up was 5.7 (range, 2.6–16.4) months. The median treatment duration in patients with a BRCA1/2 alteration was 4.4 months (range, 0.5-12.0 months). Forty-six patients (54.1%) were evaluable for RECIST/PCWG3 response, including 25 patients with a BRCA1/2 alteration. By investigator-assessed RECIST/PCWG3, the confirmed ORR in patients with a BRCA1/2 alteration treated with Rubraca was 44.0% (11/25). Among the 45 evaluable patients with a BRCA1/2 alteration, 51.1% (23/45) had a confirmed PSA response (95% CI, 35.8–66.3).

Overall, the most common treatment-emergent adverse events (TEAEs) of any grade (CTCAE Grade 1-4) in all patients regardless of causality included asthenia/fatigue (44.7%, or 38/85), nausea (42.4%, or 36/85), anemia/decreased hemoglobin (22.4%, or 19/85) and constipation (28.2%, or 24/85). Five patients (5.9%) discontinued therapy due to a non-progression TEAE. One patient died due to disease progression.1

"We are very encouraged by these initial findings from the TRITON2 study, which demonstrate the potential of Rubraca to treat men with advanced prostate cancer whose disease has progressed after receiving multiple prior lines of therapy," said Patrick J. Mahaffy, President and CEO of Clovis Oncology. "PARP inhibitors are now a validated therapeutic class in oncology in multiple tumor types, and these new data underscore the benefit that Rubraca may provide for men with advanced, BRCA-mutant castration-resistant prostate cancer. Having recently received Breakthrough Therapy designation based on these data, we are committed to the rapid development of Rubraca for men with this very difficult-to-treat disease."

The poster discussion session also will include the first presentation of genomic profiling data based on tumor tissue and plasma cfDNA samples from the TRITON clinical program. The poster, authored by Dr. Simon Chowdhury, Consultant Medical Oncologist, Guy’s Hospital & Sarah Cannon Research Institute and co-principal investigator for the TRITON clinical studies, will be included in the same poster discussion session as the TRITON2 data, led by invited discussant Dr. Joaquin Mateo, of the Prostate Cancer Translational Research Group, Vall d’Hebron Institute of Oncology (VHIO). The poster discussion session takes place on 21 October at 09:15-9:40 CEST.

The data suggest cfDNA detected from plasma can be used to identify deleterious HR gene alterations in a manner that is less invasive than tumor tissue testing. Additionally, due to the invasiveness of tumor tissue sample collection, archival primary prostate samples are often used, and data suggest these samples are not representative of the somatic alterations which emerge in mCRPC.

In the study evaluation, patients’ HR gene alteration status was determined by screening a total of 1,311 tumor and 638 plasma specimens, collected from a total of 1,516 patients to determine eligibility for TRITON2 and TRITON3. There was high concordance (74%) in identifying patients with deleterious BRCA1/2 mutations by both tissue and plasma sample. The results demonstrate that detecting genetic alterations within HR genes using cfDNA sequencing could prove to be a convenient method to identify patients who might be suitable candidates for treatment with Rubraca.2 Approximately 12% of men screened for the TRITON2 study were identified as having a BRCA1/2 alteration by plasma screening.

"Tumor tissue testing relies heavily on archival samples taken when a patient is newly diagnosed but may not capture all the alterations that emerge in patients with metastatic disease," said Dr. Chowdhury. "The screening data demonstrate that there is a high concordance between alterations detected in the tissue and plasma assays. Due to the less invasive nature of obtaining cfDNA through plasma testing, this method may be more suitable for both physicians and patients and may also identify more patients eligible for clinical trials of Rubraca."

Clovis’ Rubraca poster presentations will be available online at clovisoncology.com at 07:30 CEST on Saturday, October 20, 2018.

About the TRITON2 Clinical Study

TRITON2 is an international, multicenter, open-label, Phase 2 study of Rubraca in men with metastatic castration-resistant prostate cancer with BRCA gene alterations (inclusive of germline or somatic), which is also enrolling patients with deleterious alterations of other homologous recombination (HR) repair genes, including ATM. The study is currently enrolling across sites worldwide. For more information, please visit www.tritontrials.com.

About Prostate Cancer

The American Cancer Society estimates that more than 164,000 men in the United States will be diagnosed with prostate cancer in 2018,3 and the GLOBOCAN Cancer Fact Sheets estimate that approximately 345,000 men in Europe were diagnosed with prostate cancer in 2012.4 Castration-resistant prostate cancer has a high likelihood of developing metastases. Metastatic castration-resistant prostate cancer, or mCRPC, is an incurable disease, usually associated with poor prognosis. According to the American Cancer Society, the five-year survival rate for mCRPC is approximately 29%.5 Approximately 12% of mCRPC patients have a deleterious mutation in BRCA1 or BRCA2, according to an article published in the Journal of Clinical Oncology Precision Oncology in 2017.6 These molecular markers may be used to select patients for treatment with a PARP inhibitor.

About Rubraca

Rubraca is an oral, small molecule inhibitor of PARP1, PARP2 and PARP3 being developed in multiple tumor types, including ovarian, metastatic castration-resistant prostate, and bladder cancers, as monotherapy, and in combination with other anti-cancer agents. Exploratory studies in other tumor types are also underway. Clovis holds worldwide rights for Rubraca. Rubraca is an unlicensed medical product outside of the U.S. and Europe.

Rubraca EU Authorized Use

Rubraca is licensed for adult patients with platinum sensitive, relapsed or progressive, BRCA mutated (germline and/or somatic), high-grade epithelial ovarian, fallopian tube, or primary peritoneal cancer, who have been treated with two or more prior lines of platinum-based chemotherapy, and who are unable to tolerate further platinum-based chemotherapy.

Click here to access the current Summary of Product Characteristics. Healthcare professionals should report any suspected adverse reactions via their national reporting systems.

Rubraca U.S. FDA Approved Indications and Important Safety Information

Rubraca is indicated as monotherapy for the maintenance treatment of adult patients with recurrent epithelial ovarian, fallopian tube, or primary peritoneal cancer who are in a complete or partial response to platinum-based chemotherapy.

Rubraca is indicated as monotherapy for the treatment of adult patients with deleterious BRCA mutations (germline and/or somatic) associated epithelial ovarian, fallopian tube, or primary peritoneal cancer who have been treated with two or more chemotherapies and selected for therapy based on an FDA-approved companion diagnostic for Rubraca.

Select Important Safety Information

Myelodysplastic Syndrome (MDS)/Acute Myeloid Leukemia (AML) occur uncommonly in patients treated with Rubraca, and are potentially fatal adverse reactions. In approximately 1100 treated patients, MDS/AML occurred in 12 patients (1.1%), including those in long-term follow-up. Of these, five occurred during treatment or during the 28-day safety follow-up (0.5%). The duration of Rubraca treatment prior to the diagnosis of MDS/AML ranged from 1 month to approximately 28 months. The cases were typical of secondary MDS/cancer therapy-related AML; in all cases, patients had received previous platinum-containing regimens and/or other DNA-damaging agents. Do not start Rubraca until patients have recovered from hematological toxicity caused by previous chemotherapy (≤ Grade 1).

Monitor complete blood counts for cytopenia at baseline and monthly thereafter for clinically significant changes during treatment. For prolonged hematological toxicities (> 4 weeks), interrupt Rubraca or reduce dose (see Dosage and Administration [2.2] in full Prescribing Information) and monitor blood counts weekly until recovery. If the levels have not recovered to Grade 1 or less after 4 weeks, or if MDS/AML is suspected, refer the patient to a hematologist for further investigations, including bone marrow analysis and blood sample cytogenetic analysis. If MDS/AML is confirmed, discontinue Rubraca.

Based on its mechanism of action and findings from animal studies, Rubraca can cause fetal harm when administered to a pregnant woman. Apprise pregnant women of the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment and for 6 months following the last dose of Rubraca.

Most common adverse reactions in ARIEL3 (≥ 20%; Grade 1–4) were nausea (76%), fatigue/asthenia (73%), abdominal pain/distention (46%), rash (43%), dysgeusia (40%), anemia (39%), AST/ALT elevation (38%), constipation (37%), vomiting (37%), diarrhea (32%), thrombocytopenia (29%), nasopharyngitis/upper respiratory tract infection (29%), stomatitis (28%), decreased appetite (23%) and neutropenia (20%).

Most common laboratory abnormalities in ARIEL3 (≥ 25%; Grade 1–4) were increase in creatinine (98%), decrease in hemoglobin (88%), increase in cholesterol (84%), increase in alanine aminotransferase (ALT) (73%), increase in aspartate aminotransferase (AST) (61%), decrease in platelets (44%), decrease in leukocytes (44%), decrease in neutrophils (38%), increase in alkaline phosphatase (37%) and decrease in lymphocytes (29%).

Most common adverse reactions in Study 10 and ARIEL2 (≥ 20%; Grade 1–4) were nausea (77%), asthenia/fatigue (77%), vomiting (46%), anemia (44%), constipation (40%), dysgeusia (39%), decreased appetite (39%), diarrhea (34%), abdominal pain (32%), dyspnea (21%) and thrombocytopenia (21%).

Most common laboratory abnormalities in Study 10 and ARIEL2 (≥ 35%; Grade 1–4) were increase in creatinine (92%), increase in alanine aminotransferase (ALT) (74%), increase in aspartate aminotransferase (AST) (73%), decrease in hemoglobin (67%), decrease in lymphocytes (45%), increase in cholesterol (40%), decrease in platelets (39%) and decrease in absolute neutrophil count (35%).

Co-administration of Rubraca can increase the systemic exposure of CYP1A2, CYP3A, CYP2C9, or CYP2C19 substrates, which may increase the risk of toxicities of these drugs. Adjust dosage of CYP1A2, CYP3A, CYP2C9, or CYP2C19 substrates, if clinically indicated. If co-administration with warfarin (a CYP2C9 substrate) cannot be avoided, consider increasing frequency of international normalized ratio (INR) monitoring. Because of the potential for serious adverse reactions in breast-fed children from Rubraca, advise lactating women not to breastfeed during treatment with Rubraca and for 2 weeks after the last dose. You may report side effects to the FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. You may also report side effects to Clovis Oncology, Inc. at 1-844-258-7662.

Click here for full Prescribing Information and additional Important Safety Information.

GRAIL to Present New Data from the Circulating Cell-free Genome Atlas (CCGA) Study at the European Society for Medical Oncology (ESMO) 2018 Congress

On October 19, 2018 GRAIL, Inc., a healthcare company focused on the early detection of cancer, reported that new data from the Circulating Cell-free Genome Atlas (CCGA) study will be presented by Minetta Liu, MD, Research Chair and Professor, Department of Oncology, Mayo Clinic, in an oral presentation at the European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) 2018 Congress taking place October 19 – 23 in Munich, Germany (Press release, Grail, OCT 19, 2018, View Source [SID1234529982]).

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CCGA is a prospective, observational, longitudinal study of approximately 15,000 participants. In the first CCGA sub-study, three prototype genome sequencing assays were used to analyze blood samples from 2,800 participants. Data from approximately 1,800 of these participants were presented earlier this year at the 2018 annual meetings of the American Association for Cancer Research (AACR) (Free AACR Whitepaper) and American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper).1,2

The new data being presented at ESMO (Free ESMO Whitepaper) are results from the 1,010 remaining participants from the same sub-study, which were analyzed separately for verification of the initial results. Results between the two data sets were similar, showing the prototype assays consistently detected strong signals in participants’ blood samples at high specificity for multiple cancer types. Slides with detailed results will be posted on GRAIL’s website after the presentation at grail.com/science/publications.

Presentation Details

Abstract 50O

Plasma cell-free DNA (cfDNA) assays for early multi-cancer detection: the Circulating Cell-free Genome Atlas (CCGA) study
Proffered Paper (Oral Presentation): Saturday, October 20, 2018: 9:15 – 9:27 CEST, ICM – Room 14b

About the First CCGA Sub-Study

In this pre-planned sub-study of CCGA, three prototype genome sequencing assays were evaluated as potential methods for a blood-based test for early cancer detection. Blood samples from 2,800 participants (1,628 participants with newly diagnosed cancer who had not yet received treatment and 1,172 participants without a cancer diagnosis) were sequenced with all three prototype assays. Twenty different cancer types across all stages were included in the sub-study. Blood samples from the 2,800 participants were separated into a training set (1,785 participants) and an independent test set (1,010 participants) for verification of the initial results.

The prototype sequencing assays included:

Targeted sequencing of paired cell-free DNA (cfDNA) and white blood cells to detect somatic mutations, such as single nucleotide variants and small insertions and/or deletions;
Whole-genome sequencing of paired cfDNA and white blood cells to detect somatic copy number changes; and
Whole-genome bisulfite sequencing of cfDNA to detect abnormal cfDNA methylation patterns.
About CCGA

CCGA is a prospective, observational, longitudinal study designed to characterize the landscape of cell-free nucleic acid (cfNA) profiles in people with and without cancer. The planned enrollment for the study is more than 15,000 participants across 142 sites in the United States and Canada. Approximately 70 percent of participants will have cancer at the time of enrollment (newly diagnosed, have not yet received treatment) and 30 percent will not have a known cancer diagnosis. Planned follow-up for all participants is at least five years to collect clinical outcomes.

CYTOKINETICS TO ANNOUNCE THIRD QUARTER RESULTS ON NOVEMBER 1, 2018

On October 19, 2018 Cytokinetics, Incorporated (Nasdaq:CYTK) reported that it is scheduled to report third quarter results on November 1, 2018 at 4:00 PM Eastern Time (Press release, Cytokinetics, OCT 19, 2018, View Source [SID1234529981]). Following the announcement, Cytokinetics’ senior management will host a conference call at 4:30 PM Eastern Time to discuss operational and financial results and the company’s outlook for the future.

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The conference call will be simultaneously webcast and can be accessed from the homepage and in the Investors & Media section of Cytokinetics’ website at www.cytokinetics.com. The live audio of the conference call can also be accessed by telephone by dialing either (866) 999-CYTK (2985) (United States and Canada) or (706) 679-3078 (international) and typing in the passcode 9785146.

An archived replay of the webcast will be available via Cytokinetics’ website until November 8, 2018. The replay will also be available via telephone by dialing (855) 859-2056 (United States and Canada) or (404) 537-3406 (international) and typing in the passcode 9785146 from November 1, 2018 at 7:30 PM Eastern Time until November 8, 2018.