Olaparib monotherapy in pretreated patients with BRCA1/2 alterations: Results of a DRUP trial cohort.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 3633-3633
Author(s):  
Hanneke van der Wijngaart ◽  
Louisa Rose Hoes ◽  
Jade Maxime van Berge Henegouwen ◽  
Daphne Liselotte van Der Velden ◽  
Laurien Zeverijn ◽  
...  

3633 Background: Extensive molecular profiling in cancer regularly reveals targets for which approved drugs are available in tumor types outside the registered label. Efficacy of off-label use of these drugs is unavailable. Access to these drugs for pts is challenging. In the Drug Rediscovery Protocol (DRUP, Van der Velden et al, Nature 2019), pts are treated based on their tumor molecular profile. Here, we present the results of the successful cohort “Olaparib for tumors with BRCA1/2 alterations”. Methods: Twenty five adult cancer patients (pts) who exhausted all treatment options and had BRCA1/2 loss of function (LoF) mutations (found in routine diagnostics) were included. No pts were eligible for on-label treatment with PARP inhibitors. Pts were treated with olaparib until disease progression or unacceptable toxicity. The primary endpoint was clinical benefit (CB: objective response or stable disease (SD) ≥ 16 weeks). Pts were enrolled using a Simon-like two-stage model, with 8 pts in stage 1 and up to 24 pts in stage 2 if at least 1 pt had CB in stage 1. A fresh frozen biopsy was obtained from each pt for whole genome sequencing (WGS) and target confirmation. Results: Fourteen pts (56%) had CB. The objective response rate was 32%. Nine different cancer types were included: prostate (n=11), breast (n=4), ovarian (n=2), pancreatic (n=3), colorectal (n=2), biliary tract (n=2), kidney (n=1), adrenal gland (n=1) and endometrial (n=1). WGS could be performed on 58% of baseline tumor biopsies, confirming the original BRCA1/2 mutations in 86%. CB was observed in pts with both somatic and germline BRCA alterations and across tumor types. CB was only observed in cases with biallelic loss of BRCA1/2 in the tumor and when classified as HRD by a pan-cancer homologous recombination deficiency classifier (CHORD), which relies on genome-wide SNV, indel, and SV mutational footprints for HRD detection. No evidence of complete BRCA loss and HRD was observed in 5 pts with PD, while 4 patients with effective BRCA complete loss and HRD also had PD. WGS analysis of these pts suggested resistance mechanisms due to other oncogenic drivers (e.g FGFR1 amplification, CTNNB1 stabilization, KEAP1 inactivation). Conclusions: Olaparib seems to be an effective treatment option for pts with BRCA1/2 LoF mutated malignancies, regardless of histology, for both germline and somatic alterations, which needs confirmation in an independent cohort. CB of olaparib was observed in malignancies showing biallelic loss of BRCA1/2 and when classified as HRD, indicating the importance of the BRCA/HRD signature status. Clinical trial information: NCT02925234 .

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 11565-11565
Author(s):  
Scott Schuetze ◽  
Michael Rothe ◽  
Pam K. Mangat ◽  
Liz Garrett-Mayer ◽  
Funda Meric-Bernstam ◽  
...  

11565 Background: TAPUR is a phase II basket study evaluating anti-tumor activity of commercially available targeted agents in pts with advanced cancers with genomic alterations. Results in a cohort of STS pts with CDK4 amplification treated with P are reported. Methods: Eligible pts had advanced STS, no standard treatment options, measurable disease, ECOG PS 0-2, and adequate organ function. Genomic testing was performed in CLIA-certified, CAP-accredited site selected labs. Pts received P at 125 mg orally once daily for 21 days, followed by 7 days off until disease progression. Pts matched to P had CDK4 amplification and no RB mutations. Simon 2-stage design tested the null disease control (DC) - defined as partial (PR), complete response (CR) or stable disease at 16+ weeks (SD 16+) - rate of 15% vs. 35% (power = 0.85; α = 0.10). If ≥2 of 10 pts in stage 1 have DC, 18 more pts are enrolled. If ≥7 of 28 pts have DC, the null DC rate is rejected. Secondary endpoints are progression-free survival (PFS), overall survival (OS) and safety. Results: 29 pts (66% male) with STS with CDK4 amplification were enrolled from July 2016 to Nov 2019. 1 pt was not evaluable and excluded from efficacy analyses. Demographics and outcomes are summarized in Table. One pt with partial response (PR) and 12 pts with SD16+ were observed for DC and objective response (OR) rates of 48% (95% CI: 31%, 62%) and 3.7% (95% CI: 0.1%, 19%), respectively, and the null DC rate of 15% was rejected (p<0.001). 9/13 pts with DC continued on treatment for >32 weeks. 14 pts had at least one grade 3-4 AE at least possibly related to P with the most common being low WBC/platelets. Other grade 3 AEs included increased alanine aminotransferase, anemia, and fatigue. Conclusions: Monotherapy P demonstrated anti-tumor activity in heavily pre-treated pts with STS with CDK4 amplification. Additional study is warranted to confirm the efficacy of P in pts with STS with CDK4 amplification. Clinical trial information: NCT02693535. [Table: see text]


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 6043-6043
Author(s):  
Evan P. Pisick ◽  
Michael Rothe ◽  
Pam K. Mangat ◽  
Liz Garrett-Mayer ◽  
Francis P. Worden ◽  
...  

6043 Background: TAPUR is a phase II basket study evaluating anti-tumor activity of commercially available targeted agents in pts with advanced cancers with genomic alterations. Results in a cohort of HNC pts with CDKN2A loss or mutation treated with P are reported. Methods: Eligible pts had advanced HNC, no standard treatment options, measurable disease, ECOG PS 0-2, and adequate organ function. Genomic testing was performed in CLIA-certified, CAP-accredited site selected labs. Pts received P at 125 mg orally once daily for 21 days, followed by 7 days off until disease progression. Pts matched to P had CDKN2A loss or mutation and no RB mutations. Simon 2-stage design tested the null disease control (DC) - defined as partial (PR), complete response (CR) or stable disease at 16+ weeks (SD 16+) - rate of 15% vs. 35% (power = 0.85; α = 0.10). If ≥2 of 10 pts in stage 1 have DC, 18 more pts are enrolled. If ≥7 of 28 pts have DC, the null DC rate is rejected. Secondary endpoints are progression-free survival (PFS), overall survival (OS) and safety. Results: 28 pts (64% male) with HNC with CDKN2A loss (20 pts) or mutation (8 pts) were enrolled from June 2016 to Sept 2019. All were eligible for efficacy and toxicity. Demographics and outcomes are summarized in Table. No objective response (OR) and 10 pts with SD16+ (9 with CDKN2A loss, 1 with mutation) were observed for a DC rate of 37% (95% CI: 21%, 50%); the null DC rate of 15% was rejected (p=0.005). 14 pts had at least one grade 3-5 adverse or serious adverse event (AE/SAE) at least possibly related to P with the most common being low WBC/platelets. Other grade 3-4 AEs included anemia, fatigue, hypocalcemia, and syncope. There was one pt with grade 5 respiratory failure likely due to extensive lung metastases and aspiration but P-related pneumonitis could not be ruled out. Conclusions: Monotherapy P demonstrated modest anti-tumor activity and clinically significant AEs in heavily pre-treated pts with HNC with CDKN2A loss or mutation. Additional study is warranted to confirm the efficacy of P in pts with HNC with CDKN2A loss or mutation. Clinical trial information: NCT02693535. [Table: see text]


2021 ◽  
Vol 23 (Supplement_6) ◽  
pp. vi66-vi66
Author(s):  
Naveed Wagle ◽  
Jose Carrillo ◽  
Akanksha Sharma ◽  
Minhdan Nguyen ◽  
Judy Truong ◽  
...  

Abstract Glioblastoma is the most common and aggressive primary brain tumor. Beyond upfront therapy with radiation and temozolomide chemotherapy there is no standard therapy that has been effective. Inhibitors of BRAF and MEK, a downstream protein immediately following BRAF, have been shown to have survival benefit for patients with other BRAF V600E mutant neoplasm including advanced melanoma. We describe our experience using this combined target therapy for two patients with BRAF V600E mutant glioblastoma. Two adult patients with pathologically diagnosed glioblastoma presented with radiographic evidence of tumor progression after prior treatment with chemotherapy or immunotherapy. Neither had received radiation therapy within 3 months of starting treatment. Molecular characterization was performed though Caris which showed evidence of BRAF V600E mutation. BRAF inhibitors were initiated in combination with standard therapy options. MRI imaging was obtained to monitor for disease progression. BRAF inhibitors were tolerated well without any side effects not previously reported. Partial objective response was seen in both patients on subsequent MRI imaging within 8 weeks of starting treatment. Progression free survival and overall survival have not been reached in either case. BRAF inhibition may have therapeutic benefit in BRAF mutated glioblastoma. Partial response was seen in this case series. The molecular profile of glioblastoma may suggest treatment options beyond standard chemotherapy options. This series supports the use of BRAF inhibitors for the treatment of BRAFV600E glioblastoma A controlled trial should be supported.


2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 9041-9041 ◽  
Author(s):  
Eugene R Ahn ◽  
Pam K. Mangat ◽  
Elizabeth Garrett-Mayer ◽  
Susan Halabi ◽  
Elie G. Dib ◽  
...  

9041 Background: TAPUR is a phase II basket study evaluating anti-tumor activity of commercially available targeted agents in pts with advanced cancers with genomic alterations. Results in a cohort of NSCLC pts with CDKN2A loss or mutation treated with P are reported. Methods: Eligible pts had advanced NSCLC, no standard treatment options, measurable disease, ECOG PS 0-2 and adequate organ function. Genomic testing was performed using commercially available tests. Pts matched to P had NSCLC with CDKN2A loss or mutation and no RB mutations. A Simon two-stage design was used to test a null rate of 15% vs. 35% (power = 0.85; α = 0.10). If ≥2 of 10 pts in stage 1 have disease control (DC) (objective response (OR) or stable disease at 16 weeks (wks) (SD16+)), an additional 18 pts are enrolled. If ≥7 of 28 pts have DC, the drug is considered worthy of further study. Secondary endpoints are progression-free survival (PFS), overall survival (OS) and safety. Results: Twenty-nine pts were enrolled from January 2017 to June 2018; 1 pt was unevaluable for response but is included in safety analyses. Pts received P at 125 mg orally once daily for 21 days, followed by 7 days off. Demographics and outcomes are summarized in Table (N = 28). One PR and 6 SD16+ were observed for a DC rate of 29% (90% CI, 15% to 37%). 10 pts had at least one grade 3 or 4 AE or SAE at least possibly related to P with the most common being cytopenias. Other grade 3-4 AEs or SAEs at least possibly related to P included fatigue, anorexia, febrile neutropenia, myocardial infarction, sepsis, vomiting, and hypophosphatemia. Conclusions: Monotherapy with P demonstrated evidence of anti-tumor activity in heavily pre-treated NSCLC pts with CDKN2A loss or mutation . Additional study is warranted to confirm the efficacy of P in pts with NSCLC with CDKN2A loss or mutation. Clinical trial information: NCT02693535. [Table: see text]


2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 4117-4117 ◽  
Author(s):  
Joon Oh Park ◽  
Yin-Hsun Feng ◽  
Yen-Yang Chen ◽  
Wu-Chou Su ◽  
Do-Youn Oh ◽  
...  

4117 Background: Patients (pts) with advanced CCA who progressed on or after first line chemotherapy have no approved treatment options. Fibroblast growth factor receptor (FGFR) gene alterations are observed in many tumor types including 14-17% in CCA. Erdafitinib, an orally bioavailable, selective pan-FGFR kinase inhibitor, has shown clinical activity against solid tumors with FGFR alterations. Methods: LUC2001 is an open-label, multicenter, Ph2a study in advanced CCA pts with FGFR alterations (FoundationOne), who progressed after ≥ 1 prior treatment. The primary endpoint is objective response rate (ORR; RECIST 1.1). The secondary endpoints are disease control rate (DCR), progression free survival (PFS), duration of response (DOR), safety and pharmacokinetics (PK). Disease is evaluated every 8 weeks until disease progression (PD). Results: As of 3 Dec 2018, 222 CCA pts were molecularly screened; 34 had FGFR alterations, of whom 14 (8 FGFR2 fusion, 3 FGFR2 mutation, 1 FGFR3 fusion, 2 FGFR3 mutation) were dosed 8 mg once daily with up titration option. Median age was 51.5 years. 13/14 and 12/14 pts had prior platinum or gemcitabine based therapy respectively, 7/14 pts got re-treated with platinum or gemcitabine based therapy, and 9/14 pts had ≥2 prior lines of therapy. Median number of treatment cycles was 5.0 (range: 1; 22) and treatment duration was 4.83 (range: 0.5; 20.3) months. In 12 evaluable pts, there were 6 confirmed partial response (PR), 4 stable disease (SD) and 2 PD; ORR (CR+PR) was 6/12 (50.0%), DCR (CR+PR+uCR+uPR+SD) was 10/12 (83.3%); median DOR was 6.83 months (95% CI: 3.65; 12.16); median PFS was 5.59 months (95% CI: 1.87, 13.67). In 10 evaluable FGFR2+ pts, ORR was 6/10 (60.0%); DCR was 10/10(100%); median PFS was 12.35 months (95% CI: 3.15, 19.38). The most common TEAEs ( > 30%) were hyperphosphatemia, dry mouth, stomatitis, and dry skin. 9 pts had ≥ Grade 3 AEs (8 Grade 3,1 Grade 5), of which 7 drug related. TEAE led to treatment 1 discontinuation, 6 dose reductions and 1 death (not drug related). The results of PK and PK/PD relationship were consistent with other erdafitinib studies in different ethnic background pts. Conclusions: Asian advanced CCA pts with FGFR alterations treated with erdafitinib had encouraging efficacy and acceptable safety profile similar to experience in other tumor types and populations. Clinical trial information: NCT02699606.


2021 ◽  
Vol 12 ◽  
Author(s):  
Kan Wu ◽  
Jiayu Liang ◽  
Yanxiang Shao ◽  
Sanchao Xiong ◽  
Shuyang Feng ◽  
...  

Background: Poly(ADP-ribose) polymerase (PARP) inhibitors have breakthrough designations for metastatic castration-resistant prostate cancer (mCRPC). We performed a meta-analysis of current clinical trials to evaluate the efficacy of PARP inhibitors in mCRPC patients based on their genetic status.Methods: On August 2020, PubMed, Scopus, Embase, Cochrane Central Register of Controlled Trials, and Web of Science were searched for phase II/III clinical studies on PARP inhibitors in mCRPC patients. Data were extracted independently by two investigators and analyzed using Review Manager software version 5.3. Primary endpoints included overall response rate (ORR) and progression-free survival (PFS).Results: Nine clinical trials were identified and analyzed for the clinical benefit of PARP inhibitors in mCRPC patients (n = 1,219). Pooled analyses demonstrated that PARP inhibitors could provide a significant improvement of ORR and PFS in patients with homologous recombination deficiency (HRD) when compared with non-HRD patients. Within the HRD subgroup, BRCA mutation patients achieved significantly higher ORR [odds ratio (OR): 9.97, 95% confidence interval (CI): 6.08–16.35] and PFS rates at 12 months (OR: 3.23, 95% CI: 1.71–6.10) when compared with BRCA wild-type patients. Furthermore, patients harboring HRD without BRCA mutations have a higher objective response after PARP inhibitor treatment compared with non-HRD patients.Conclusion: PARP inhibitor is an effective treatment option for mCRPC patients with mutations in genes related to the HR DNA repair pathway when compared with non-HRD patients. In addition to BRCA mutations, other HRD-related gene aberrations may also be used as novel biomarkers to predict the efficacy of PARP inhibitors.


Vaccines ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 623
Author(s):  
Brigida Anna Maiorano ◽  
Giovanni Schinzari ◽  
Davide Ciardiello ◽  
Maria Grazia Rodriquenz ◽  
Antonio Cisternino ◽  
...  

Background: In the last years, many new treatment options have widened the therapeutic scenario of genitourinary malignancies. Immunotherapy has shown efficacy, especially in the urothelial and renal cell carcinomas, with no particular relevance in prostate cancer. However, despite the use of immune checkpoint inhibitors, there is still high morbidity and mortality among these neoplasms. Cancer vaccines represent another way to activate the immune system. We sought to summarize the most recent advances in vaccine therapy for genitourinary malignancies with this review. Methods: We searched PubMed, Embase and Cochrane Database for clinical trials conducted in the last ten years, focusing on cancer vaccines in the prostate, urothelial and renal cancer. Results: Various therapeutic vaccines, including DNA-based, RNA-based, peptide-based, dendritic cells, viral vectors and modified tumor cells, have been demonstrated to induce specific immune responses in a variable percentage of patients. However, these responses rarely corresponded to significant survival improvements. Conclusions: Further preclinical and clinical studies will improve the knowledge about cancer vaccines in genitourinary malignancies to optimize dosage, select targets with a driver role for tumor development and growth, and finally overcome resistance mechanisms. Combination strategies represent possibly more effective and long-lasting treatments.


2017 ◽  
Vol 35 (6) ◽  
pp. 611-617 ◽  
Author(s):  
Kazuomi Ueshima ◽  
Naoshi Nishida ◽  
Masatoshi Kudo

Objectives: Previously, no therapeutic agent has been known to improve the overall survival compared with placebo in patients with hepatocellular carcinoma (HCC), who have progressed after sorafenib. In this patient population, regorafenib was first demonstrated to confer a survival benefit in the RESORCE trial, and subsequently it was approved as a second-line treatment for patients with advanced HCC. An open-label expanded access program (EAP) of regorafenib was implemented for compassionate use. We investigated the efficacy and safety of regorafenib based on our experience of the RESORCE trial and the EAP. Methods: Data from 5 patients from the RESORCE trial and 6 from the EAP were analyzed retrospectively. All patients had tolerated prior sorafenib and were progressing during sorafenib treatment. Results: The median progression-free survival was 9.2 months (95% CI 2.3-16.1). One patient achieved a partial response and 7 achieved stable disease. The objective response rate was 9.1%, and the disease control rate was 72.7%. No treatment-associated mortalities were observed. Grade 3 hypophosphatemia was observed in 2 patients, grade 2 anorexia was observed in 5 patients, and grade 3 neutropenia was observed in 2 patients. Grade 2 and grade 3 thrombocytopenia were observed in 2 and 3 patients, respectively. All treatment-related adverse events were improved by reduction or interruption of regorafenib. Five patients showed decreased serum albumin levels. Conclusion: Sorafenib and regorafenib sequential therapy presents a safe and effective treatment option for patients with advanced HCC.


Genes ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 197
Author(s):  
Anqi Chen ◽  
Suhua Zhang ◽  
Lei Xiong ◽  
Shihan Xi ◽  
Ruiyang Tao ◽  
...  

A growing number of studies have shown immunotherapy to be a promising treatment strategy for several types of cancer. Short tandem repeats (STRs) have been proven to be alternative markers for the evaluation of hypermutability in gastrointestinal (GI) cancers. However, the status of STRs and microsatellite instability (MSI) in other tumors have not yet been investigated. To further compare STR and MSI alterations in different tumors, a total of 407 paired DNAs were analyzed from the following eight tumor types: breast cancer (BC), hepatocellular cancer (HCC), pancreatic cancer (PC), colorectal cancer (CRC), gastric cancer (GC), lung cancer (LC), esophageal cancer (EC), and renal cell cancer (RCC). The STR alteration frequencies varied in different tumors as expected. Interestingly, none of the patients possessed MSI-low (MSI-L) or MSI-high (MSI-H), except for the GI patients. The highest STR alteration was detected in EC (77.78%), followed by CRC (69.77%), HCC (63.33%), GC (54.55%), LC (48.00%), RCC (40.91%), BC (36.11%), and PC (25.71%). The potential cutoff for hypermutability was predicted using the published objective response rate (ORR), and the cutoff of LC and HCC was the same as that of GI cancers (26.32%). The cutoffs of 31.58% and 10.53% should be selected for BC and RCC, respectively. In summary, we compared MSI and STR status in eight tumor types, and predicted the potential threshold for hypermutability of BC, HCC, CRC, GC, LC, EC, and RCC.


2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Carmen Varela ◽  
Camila Oda-Montecinos ◽  
Ana Andrés ◽  
Carmina Saldaña

Abstract Background Web-based delivered interventions have become an innovative option to treat health problems, like obesity. The aim of this systematic review and network meta-analysis was to analyze the effectiveness of web-based behavioral treatments for adults with overweight and obesity. Web-based interventions and comparison interventions (traditional weight control programs) were classified according to the following feedback characteristics: frequency, personalization, and provider (human versus machine). Method From the initial 1789 studies, 15 were included in this review. A network meta-analysis was conducted to analyze the efficacy of web-based programs with traditional interventions, considering direct and indirect comparisons. The main outcome was the weight loss mean difference (kg) between baseline and post-treatment. Heterogeneity and consistency assumptions were validated to conduct the network meta-analysis. Results Network meta-analysis showed comparisons between different treatment options. The main results were that Intensive Contact Web-based programs were more effective than wait-list (Mean Difference − 1.86 kg; 95% Confidence Interval: − 3.61, − 0.12). Moreover, Intensive Contact Web-based programs were more effective than the other web-based options and self-help traditional interventions. However, the only significant comparison was Intensive Contact Web-based programs versus Guided Self-Help Web-based programs (Mean Difference − 4.31 kg; 95% Confidence Interval: − 5,22, − 3,41). Intensive Contact Web-based programs were the most effective treatment option according the obtained results, achieving the first place in the ranking provided by the network meta-analysis with 98.5% of probabilities. Conclusions Intensive Contact Web-based interventions have obtained the first position in the ranking, proving the relevance of frequent, personalized, and professional feedback and their association with a better prognosis for people with overweight and obesity. These results provide relevant information to design more effective treatments for people with overweight and obesity, in a new format especially appropriate for the current situation.


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