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Veristat Inc.

Holliston, MA, United States

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Horwitz S.,Sloan Kettering Cancer Center | Coiffier B.,Hospices Civils de Lyon | Foss F.,Yale Cancer Center | Prince H.M.,University of Melbourne | And 11 more authors.
Annals of Oncology | Year: 2015

Background: For patients with peripheral T-cell lymphoma (PTCL), the value of 18fluoro-deoxyglucose positron emission tomography (FDG-PET) scans for assessing prognosis and response to treatment remains unclear. The utility of FDG-PET, in addition to conventional radiology, was examined as a planned exploratory end point in the pivotal phase 2 trial of romidepsin for the treatment of relapsed/refractory PTCL. Patients and methods: Patients received romidepsin at a dose of 14 mg/m2 on days 1, 8, and 15 of 28-day cycles. The primary end point was the rate of confirmed/unconfirmed complete response (CR/CRu) as assessed by International Workshop Criteria (IWC) using conventional radiology. For the exploratory PET end point, patients with at least baseline FDG-PET scans were assessed by IWC + PET criteria. Results: Of 130 patients, 110 had baseline FDG-PET scans, and 105 were PET positive at baseline. The use of IWC + PET criteria increased the objective response rate to 30% compared with 26% by conventional radiology. Durations of response were well differentiated by both conventional radiology response criteria [CR/CRu versus partial response (PR), P = 0.0001] and PET status (negative versus positive, P < 0.0001). Patients who achieved CR/CRu had prolonged progression-free survival (PFS, median 25.9 months) compared with other response groups (P = 0.0007). Patients who achieved PR or stable disease (SD) had similar PFS (median 7.2 and 6.3 months, respectively, P = 0.6427). When grouping PR and SD patients by PET status, patients with PET-negative versus PET-positive disease had a median PFS of 18.2 versus 7.1 months (P = 0.0923). Conclusion(s): Routine use of FDG-PET does not obviate conventional staging, but may aid in determining prognosis and refine response assessments for patients with PTCL, particularly for those who do not achieve CR/CRu by conventional staging. The optimal way to incorporate FDG-PET scans for patients with PTCL remains to be determined. Trial registration: NCT00426764. © The Author 2015.


King T.C.,St Vincent Hospital | Upfal M.,Detroit Medical Center | Gottlieb A.,Massachusetts General Hospital | Adamo P.,Employee Health Services and Occupational Injury Care and Wellness | And 12 more authors.
American Journal of Respiratory and Critical Care Medicine | Year: 2015

Rationale: Interferon-g release assays have significant advantages over tuberculin skin testing in many clinical situations. However, recent studies have called into question their reliability in serial testing of healthcare workers because of reportedly high rates of positivity and high conversion/reversion rates on retesting. Objectives: To define the performance characteristics of the T-SPOT.TBtest, an interferon-γ release assay, during serial screening programs of healthcare workers at 19 U.S. hospitals. Methods: A total of 42,155 T-SPOT.TB test results from healthcare workers at 19 geographically diverse hospitals obtained for routine tuberculosis screening programs were analyzed to determine the rates of positivity, reversion, and conversion in serial testing data. Measurements and Main Results: In 19,630 evaluable serial pairs from 16,076 healthcare workers, the mean test positivity rate was 2.3% (range, 0.0-27.4%). The mean conversion rate was 0.8% (range, 0.0-2.5%), and the mean reversion rate was 17.6%. Positivity and conversion rates correlated with known tuberculosis risk factors including age and sex. The observed specificity of the T-SPOT.TB test was at least 98.6%. Conclusions: The high concordance and test completion rates in this study suggest that the T-SPOT.TB test is a reliable tool for healthcare worker serial screening. As expected, the observed positivity rates were lower compared with the tuberculin skin test, likely reflecting the higher specificity of this test. Furthermore, the observed rates of conversion were low and significantly correlated with the geographic incidence of tuberculosis. Our findings suggest that the T-SPOT.TB test is an accurate and reliable way to screen healthcare workers. © 2015 by the American Thoracic Society.


Jackson L.A.,Group Health Research Institute | Gaglani M.J.,Texas A&M University | Keyserling H.L.,Emory University | Balser J.,Veristat Inc. | And 4 more authors.
BMC Infectious Diseases | Year: 2010

Background: Seasonal influenza imposes a substantial personal morbidity and societal cost burden. Vaccination is the major strategy for influenza prevention; however, because antigenically drifted influenza A and B viruses circulate annually, influenza vaccines must be updated to provide protection against the predicted prevalent strains for the next influenza season. The aim of this study was to assess the efficacy, safety, reactogenicity, and immunogenicity of a trivalent inactivated split virion influenza vaccine (TIV) in healthy adults over two influenza seasons in the US.Methods: The primary endpoint of this double-blind, randomized study was the average efficacy of TIV versus placebo for the prevention of vaccine-matched, culture-confirmed influenza (VMCCI) across the 2005-2006 and 2006-2007 influenza seasons. Secondary endpoints included the prevention of laboratory-confirmed (defined by culture and/or serology) influenza, as well as safety, reactogenicity, immunogenicity, and consistency between three consecutive vaccine lots. Participants were assessed actively during both influenza seasons, and nasopharyngeal swabs were collected for viral culture from individuals with influenza-like illness. Blood specimens were obtained for serology one month after vaccination and at the end of each influenza season's surveillance period.Results: Although the point estimate for efficacy in the prevention of all laboratory-confirmed influenza was 63.2% (97.5% confidence interval [CI] lower bound of 48.2%), the point estimate for the primary endpoint, efficacy of TIV against VMCCI across both influenza seasons, was 46.3% with a 97.5% CI lower bound of 9.8%. This did not satisfy the pre-specified success criterion of a one-sided 97.5% CI lower bound of >35% for vaccine efficacy. The VMCCI attack rates were very low overall at 0.6% and 1.2% in the TIV and placebo groups, respectively. Apart from a mismatch for influenza B virus lineage in 2005-2006, there was a good match between TIV and the circulating strains. TIV was highly immunogenic, and immune responses were consistent between three different TIV lots. The most common reactogenicity events and spontaneous adverse events were associated with the injection site, and were mild in severity.Conclusions: Despite a good immune response, and an average efficacy over two influenza seasons against laboratory-confirmed influenza of 63.2%, the pre-specified target (lower one-sided 97.5% confidence bound for efficacy > 35%) for the primary efficacy endpoint, the prevention of VMCCI, was not met. However, the results should be interpreted with caution in view of the very low attack rates we observed at the study sites in the 2005-2006 and 2006-2007, which corresponded to relatively mild influenza seasons in the US. Overall, the results showed that TIV has an acceptable safety profile and offered clinical benefit that exceeded risk.Trial registration: NCT00216242. © 2010 Jackson et al; licensee BioMed Central Ltd.


Coiffier B.,Hospices Civils de Lyon | Pro B.,Thomas Jefferson University | Prince H.M.,University of Melbourne | Foss F.,Yale Cancer Center | And 13 more authors.
Journal of Hematology and Oncology | Year: 2014

Background: Romidepsin is a structurally unique, potent, bicyclic class 1 selective histone deacetylase inhibitor approved by the US Food and Drug Administration for the treatment of patients with cutaneous T-cell lymphoma who have received ≥ 1 prior systemic therapy and patients with peripheral T-cell lymphoma (PTCL) who have received ≥ 1 prior therapy. Approval for PTCL was based on results (n = 130; median follow-up, 13.4 months) from the pivotal study of romidepsin for the treatment of relapsed/refractory PTCL. The objective is to present updated data (median follow-up, 22.3 months) and to characterize patients who achieved long-term responses (≥ 12 months) to romidepsin. Methods. Patients with PTCL who relapsed from or were refractory to ≥ 1 prior systemic therapy received romidepsin 14 mg/m§ssup§2§esup§ as a 4-hour intravenous infusion on days 1, 8, and 15 every 28 days for up to 6 cycles; patients with response or stable disease could continue romidepsin beyond 6 cycles. The primary endpoint was rate of confirmed/unconfirmed complete response (CR/CRu) determined by an Independent Review Committee. Secondary endpoints included objective response rate (ORR) and duration of response (DOR). For patients who achieved CR/CRu, baseline characteristics by DOR (≥ 12 vs < 12 months) were examined. Results: The ORR to romidepsin was 25%, including 15% with CR/CRu. The median DOR for all responders was 28 months (range, < 1-48+) and was not reached for those who achieved CR/CRu. Patients with lack of response or transient response to prior therapy achieved durable responses with romidepsin. Of the 19 patients who achieved CR/CRu, 10 had long-term (≥ 12 months) responses; none of the baseline characteristics examined - including heavy pretreatment, response to prior therapy, or advanced disease - precluded long-term responses to romidepsin. With a median progression-free survival of 29 months, patients who achieved CR/CRu for ≥ 12 months had significantly longer survival vs those with CR/CRu for < 12 months or < CR/CRu. Extended treatment and longer follow-up did not affect the reported safety profile of romidepsin. Conclusions: Treatment with romidepsin leads to highly durable responses in a subset of patients with relapsed/refractory PTCL, with responses ongoing as long as 48 months. Trial registration. NCT00426764. © 2014 Coiffier et al.; licensee BioMed Central Ltd.


PubMed | Thomas Jefferson University, Hospices Civils de Lyon, Sloan Kettering Cancer Center, Yale Cancer Center and 3 more.
Type: | Journal: Journal of hematology & oncology | Year: 2016

Achievement of durable responses in patients with relapsed/refractory peripheral T cell lymphoma (PTCL) is challenging with current therapies, and there are few data regarding the potential benefits of continuing treatment in patients with the best response of stable disease (SD). Histone deacetylase inhibitors are a novel class of drugs with activity in T cell malignancies. Romidepsin was approved by the US Food and Drug Administration for the treatment of relapsed/refractory PTCL based on a pivotal trial demonstrating an objective response rate of 25% (33/130), including 15% with confirmed/unconfirmed complete response and a median duration of response of 28 months. Our objective was to further study the clinical benefits of romidepsin in patients that had the best response of SD.Patients with PTCL relapsed/refractory to 1 prior therapy were treated with the approved dose of 14 mg/m(2) romidepsin on days 1, 8, and 15 of six 28-day cycles; patients with SD or response after cycle 6 were allowed to continue on study until progression. By protocol amendment, patients treated for 12 cycles could receive maintenance dosing twice per cycle; after cycle 24, dosing could be further reduced to once per cycle in those who had received maintenance dosing for 6 months.Of the 32 patients (25%) with the best response of SD, 22 had SD for 90 days (SD90; cycle 4 response assessment). The longest SD was >3 years in a patient who received maintenance dosing of 14 mg/m(2) on days 1 and 15 beginning in cycle 13. Patients with the best response of SD90 or partial response achieved similar overall and progression-free survival. Prolonged dosing of romidepsin was well tolerated.We concluded that patients who achieve SD may consider continuing treatment because the clinical benefits of romidepsin may extend beyond objective responses.NCT00426764.


Turley C.B.,University of Texas Medical Branch | Rupp R.E.,University of Texas Medical Branch | Johnson C.,5602 College Blvd | Taylor D.N.,VaxInnate | And 5 more authors.
Vaccine | Year: 2011

Background: The ectodomain of matrix protein 2 (M2e) is a promising candidate for a broadly protective influenza A vaccine because it is highly conserved and antibodies to M2e are protective in animal models. STF2.4xM2e (VAX102) is a recombinant fusion protein that links four tandem copies of the M2e antigen to Salmonella typhimurium flagellin, a TLR5 ligand used as an adjuvant. The objectives of this first-in-human study were to assess the safety and immunogenicity of VAX102 given as a prime-boost regimen to healthy adults. Methods: Sixty subjects 18-49 years old were enrolled in a multicenter, double-blind, randomized, placebo-controlled trial (Study 1). Based on pre-clincial data, initial design included doses starting at 10 μg, with an escalation plan. After reactogenicity was noted at the 10 μg dose, the trial was redesigned to evaluate 0.3, 1.0, and 3 μg doses. Following this study, 16 subjects were enrolled in Study 2, an open label, low dose study, to evaluate doses of 0.03 and 0.1 μg. In both trials, vaccine or placebo was given intramuscularly (i.m.) at 0 and 28 days. Clinical and laboratory safety assessments took place 1 and 7 days after immunization. Immune responses to M2e and flagellin were assessed by ELISA at 7, 14 and 28 days after each dose. Seroconversion was defined as a serum IgG anti-M2e antibody value ≥0.174 μg/ml and a fourfold rise in concentration. Results: Doses of 0.03-1 μg were safe and well tolerated in all subjects. Doses of 0.03 and 0.1 μg produced limited immunogenicity (38% and 75% respectively), after the second dose of vaccine. Doses of 0.3 and 1.0 μg were immunogenic in 18 (75%) of 24 vaccinees after the first dose and 23 (96%) after the second dose. In the 1.0 μg group, the geometric mean M2e antibody concentration was 0.4 μg/ml after the first dose and 1.7 μg/ml after the booster dose. M2e antibody concentrations and seroconversion rates were not significantly different at higher doses (p> 0.05). Immune response to flagellin was robust but did not appear to interfere with M2e antibody responses after the booster dose. Following the first injection of VAX102 at higher doses (3 and 10 μg), self-limited but severe symptoms were noted in some subjects and were associated with elevated levels of C-reactive protein. Although not directly measured, this reaction was believed to be mediated by cytokine release. Conclusions: VAX102 was safe and induced high antibody levels to M2e at 0.3 and 1.0 μg doses. The TLR5 ligand, S. typhimurium flagellin, is a novel approach to adjuvant-like activity through activation of innate immunity, and when fused to multiple copies of the M2e protein, the vaccine was able to induce a fourfold rise in antibody in humans, to a previously non-immunogenic, highly-conserved portion of the influenza virus. Clinical correlates of protection that may be afforded by M2e antibody in humans are a future focus of investigation. © 2011 Elsevier Ltd.


Archer D.F.,Eastern Virginia Medical School | Labrie F.,EndoCeutics Inc | Bouchard C.,Clinique de Recherche en Sante des Femmes | Portman D.J.,Columbus Center for Womens Health Research | And 7 more authors.
Menopause | Year: 2015

Objective: This study aims to confirm the local effects of intravaginal prasterone on moderate to severe dyspareunia, a symptom of vulvovaginal atrophy (VVA) associated with menopause. Methods: In a prospective, randomized, double-blind, placebo-controlled phase III clinical trial, we examined the effects of daily intravaginal prasterone (6.5mg) on four co-primary objectives, namely, percentage of vaginal parabasal cells, percentage of vaginal superficial cells, vaginal pH, and moderate to severe dyspareunia identified by women as the most bothersome VVA symptom. Results: After daily intravaginal prasterone administration for 12 weeks, the percentage of parabasal cells decreased by 45.8% compared with placebo (P<0.0001), the percentage of superficial cells increased by 4.7% over placebo (P<0.0001), and vaginal pH decreased by 0.83 pH units compared with placebo (P<0.0001). The severity of most bothersome dyspareunia decreased by 46% over placebo (P=0.013) at 12 weeks, whereas moderate to severe vaginal dryness decreased by 0.43 severity score units (or 42%) compared with placebo (P=0.013). On gynecologic evaluation, a 14.4% to 21.1% improvement in vaginal secretions, epithelial integrity, epithelial surface thickness, and color over placebo (P=0.0002 to P<0.0001) was observed. Serum steroids, in agreement with the physiology of intracrinology and menopause, remained well within reference postmenopausal concentrations. All endometrial biopsies at 12 weeks have shown atrophy. Conclusions: Daily intravaginal prasterone (0.50%; 6.5mg) treatment has clinically and statistically significant beneficial effects on the four co-primary objectives of VVA, according to US Food and Drug Administration guidelines. No significant drug-related adverse effect in line with the strictly local action of treatment has been reported, thus providing a high benefit-to-risk ratio for intravaginal prasterone. © 2015 by The North American Menopause Society.


PubMed | Celgene, Sarah Cannon Research Institute, Stanford University, Jean Nichols LLC and Veristat LLC
Type: Journal Article | Journal: Cancer medicine | Year: 2015

Romidepsin is a histone deacetylase inhibitor approved by the FDA for the treatment of patients with cutaneous or peripheral T-cell lymphoma who have received prior systemic therapy. The objective of this analysis was to evaluate the potential QTc effects of romidepsin. Patients with advanced malignancy received 4-h infusions of 14 mg/m(2) romidepsin on days 1, 8, and 15 of a 28-day cycle. In cycle 2, a subset of patients received 1-h infusions of 8-12 mg/m(2) romidepsin. Patients were administered antiemetics before each romidepsin dose and electrolyte supplementation as needed. Electrocardiogram readings were performed prior to antiemetic administration, prior to romidepsin administration, and at specified time points over the subsequent 24 h. Romidepsin exposure and heart rate were also assessed. In the electrocardiogram-evaluable population, 26 patients received romidepsin at 14 mg/m(2) over 4 h. The maximum mean increases from the preantiemetic baseline for QTcF and heart rate were 10.1 msec (upper 90% CI, 14.5 msec) and 18.2 beats per minute, respectively. No patient in this study had an absolute QTcF value >450 msec and only one patient had an increase from the preantiemetic baseline of >60 msec. There was a mild reduction in the PR interval and no meaningful changes in the QRS interval. Despite the use of QT-prolonging antiemetics, treatment with romidepsin did not markedly prolong the QTc interval through 24 h. Increases in calculated QTc may have been exaggerated as a consequence of transient increases in heart rate.


Labrie F.,Endoceutics Inc. | Labrie F.,Laval University | Martel C.,Endoceutics Inc. | Balser J.,Veristat Inc.
Menopause | Year: 2011

Objective: Because the exclusive source of sex steroids (at least estrogens) after menopause is recognized to be dehydroepiandrosterone (DHEA), this study examines the interindividual variability of serum DHEA and its metabolites as well as the contribution of the ovary to global sex steroid physiology in postmenopausal women. Methods: Serum levels of DHEA and 11 of its metabolites were measured by gas or liquid chromatography/mass spectrometry in 442 intact and 71 ovariectomized postmenopausal women aged 42 to 74 years. Results: With a mean ± SD concentration of 2.03 ± 1.33 ng/mL, serum DHEA in intact postmenopausal women is highly variable with 5th and 95th centiles at 0.55 and 4.34 ng/mL, respectively, for a 7.9-fold difference. A comparable variability is observed for the 11 metabolites of DHEA. The 22.3% higher serum DHEA in intact compared with ovariectomized women is accompanied by parallel differences for all the other steroids, thus indicating that all sex steroids originate from circulating DHEA in postmenopausal women with no direct secretion of active estrogens or androgens by the postmenopausal ovary. Conclusions: The 7.9-fold difference between low and high serum DHEA levels provides an explanation for the lack of signs of hormone deficiency in some women, whereas most of them have symptoms or signs. The approximately 20% contribution of the ovary to the total pool of DHEA with no direct secretion of estrogens or androgens in the circulation could possibly explain the reported negative effect of oophorectomy on longevity, especially from coronary heart disease events. © 2011 by The North American Menopause Society.


Prokopetz J.J.,Harvard University | Losina E.,Harvard University | Losina E.,Boston University | Bliss R.L.,Veristat Inc. | And 4 more authors.
BMC Musculoskeletal Disorders | Year: 2012

Background: Numerous papers have been published examining risk factors for revision of primary total hip arthroplasty (THA), but there have been no comprehensive systematic literature reviews that summarize the most recent findings across a broad range of potential predictors. Methods. We performed a PubMed search for papers published between January, 2000 and November, 2010 that provided data on risk factors for revision of primary THA. We collected data on revision for any reason, as well as on revision for aseptic loosening, infection, or dislocation. For each risk factor that was examined in at least three papers, we summarize the number and direction of statistically significant associations reported. Results: Eighty-six papers were included in our review. Factors found to be associated with revision included younger age, greater comorbidity, a diagnosis of avascular necrosis (AVN) as compared to osteoarthritis (OA), low surgeon volume, and larger femoral head size. Male sex was associated with revision due to aseptic loosening and infection. Longer operating time was associated with revision due to infection. Smaller femoral head size was associated with revision due to dislocation. Conclusions: This systematic review of literature published between 2000 and 2010 identified a range of demographic, clinical, surgical, implant, and provider variables associated with the risk of revision following primary THA. These findings can inform discussions between surgeons and patients relating to the risks and benefits of undergoing total hip arthroplasty. © 2012 Prokopetz et al.; licensee BioMed Central Ltd.

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