GLORIA

GEOMAR Library Ocean Research Information Access

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • American Society of Clinical Oncology (ASCO)  (10)
  • Marra, Marco A.  (10)
  • 1
    In: JCO Precision Oncology, American Society of Clinical Oncology (ASCO), , No. 2 ( 2018-11), p. 1-8
    Type of Medium: Online Resource
    ISSN: 2473-4284
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2018
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 4_suppl ( 2019-02-01), p. 273-273
    Abstract: 273 Background: Substantial progress has been made in the understanding of the genomic landscape of PDAC, but the clinical utility of these data remains uncertain. Methods: As part of the BC Cancer Personalized Oncogenomics (POG) and PanGen studies, whole genome analysis and transcriptome sequencing were performed on fresh biopsy and blood sample from 47 mPDAC patients. Genomic findings informed therapy choices including potential eligibility for the CCTG PM.1 molecular basket trial. Results: Cohort consists of 53% male, average age 57.8, 34/47 had ≥2 lines of treatment. 37/47 biopsies were from liver and 26/47 were collected pre-treatment. 8/47 (17%) patients had aberrations with strong evidence of clinical actionability. These include 2 germline BRCA2, 1 germline BRCA1, 1 somatic XRCC2 homozygous deletion with strong COSMIC signature 3, all predictive of platinum sensitivity. Patients with XRCC2 deletion and BRCA1 had over 2 years on FOLFIRINOX. Fusions affecting the NRG1 gene were identified in 3 patients, all with KRAS wildtype tumours, which may confer ERRB inhibitor sensitivity. 1/3 NRG1 fusion patients had thus far been treated with the ERBB inhibitor afatinib, with reduction of CA19-9 from 〉 120,000 to 7246 and dramatic response noted on PET CT imaging one month post treatment. One patient had mismatch repair deficiency, and a high mutational burden, suggestive of immune checkpoint inhibitor sensitivity. In total 85% (40/47) sequenced mPDAC patients had potentially actionable mutations which includes CCTG PM.1 trial eligibility: 24/47 with cell cycle dysregulation (CDK4/6 inhibitor arm), 4/47 with high homologous recombination defects (PARP inhibitor arm), 1/47 ERBB2 amplification (anti-HER2 arm), 2/47 high expression of FGFR1 (Sunitinib arm) and 1/47 with high FLT4 and IGF1R expression (Axitinib arm). Conclusions: More routine use of comprehensive genomic analysis should be considered in mPDAC given finding of high degree of actionability. Importantly, a significant proportion (17%) had findings with strong evidence of clinical impact.(NCT02155621, NCT02869802, NCT03297606)
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2019
    detail.hit.zdb_id: 2005181-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 15_suppl ( 2019-05-20), p. e15753-e15753
    Abstract: e15753 Background: Significant progress has been made in the understanding of the genomic landscape of PDAC, but the clinical utility of these data remains uncertain. Methods: As part of the BC Cancer Personalized Oncogenomics (POG) and PanGen studies (NCT02155621, NCT02869802), whole genome analysis and transcriptome sequencing were performed on fresh biopsy and blood sample from 48 mPDAC patients. Genomic findings informed therapy choices including potential eligibility for the CCTG PM.1 molecular basket trial (NCT03297606). Results: Cohort consists of 54.1% male, average age 57.6, 34/48 had ≥2 lines of treatment. 37/48 biopsies were from liver and 27/48 were collected pre-treatment. 8/48 (16.6%) patients had aberrations with strong evidence of clinical actionability. These include 2 germline BRCA2, 1 germline BRCA1, 1 somatic XRCC2 homozygous deletion with strong COSMIC signature 3, all predictive of platinum sensitivity. Patients with XRCC2 deletion and BRCA1 had over 2 years on FOLFIRINOX. Fusions affecting the NRG1 gene were identified in 3/4 patients with KRAS wildtype tumours, which may confer ERRB inhibitor sensitivity. 2/3 NRG1 fusion patients have thus far been treated with the ERBB inhibitor afatinib with radiographic responses noted in both patients. One patient had mismatch repair deficiency, and a high mutational burden, suggestive of immune checkpoint inhibitor sensitivity. Other possible actionable mutations include CCTG PM.1 trial potential eligibility: 4/48 with high homologous recombination defects and 1 germline ATM mutation loss (PARP inhibitor arm), 1/47 ERBB2 amplification (anti-HER2 arm), 2/47 high expression of FGFR1 (Sunitinib arm) and 1/47 with high FLT4 and IGF1R expression (Axitinib arm). Conclusions: More routine use of comprehensive genomic analysis should be considered in mPDAC given finding of high degree of actionability. Importantly, a significant proportion (16.6%) had findings with strong evidence of clinical impact.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2019
    detail.hit.zdb_id: 2005181-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2018
    In:  Journal of Clinical Oncology Vol. 36, No. 15_suppl ( 2018-05-20), p. 12008-12008
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 36, No. 15_suppl ( 2018-05-20), p. 12008-12008
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2018
    detail.hit.zdb_id: 2005181-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 15_suppl ( 2019-05-20), p. 3137-3137
    Abstract: 3137 Background: Metastatic sarcomas represent a heterogeneous, difficult to treat family of cancers with poor median overall survival of 18 months. While global sequencing initiatives have catalogued genomic variation among primary sarcomas, metastatic sarcoma is less well understood. Genome-guided targeted therapy has made promising advances but is difficult to study in sarcomas due to heterogeneity and low prevalence. Whole genome and transcriptome analysis (WGTA) can help elucidate sarcoma oncogenesis, metastasis, and potential therapeutic targets. Methods: Using whole genome (80X) and transcriptome (200M read) sequencing of 43 metastatic sarcomas across 19 subtypes, we analyzed structural variants (SV), copy-number variants (CNV), mutation signatures, gene expression, and the immune microenvironment. All prior treatments were retrieved through chart review. Results: 17 patients (40%) attempted WGTA-informed therapy, of which 8 (47%) were classified as responders. Metastatic sarcomas demonstrated recurrent CNVs, with 17p11-p12 amplification in 42% of cases. Some recurrent expression outliers were associated with potential targets (e.g. MYOCD, PMP22, COPS3) while others (e.g. ADORA2B) have not been previously observed in sarcoma. Discovery of oncogenic fusions refined diagnoses in two cases with atypical histology. Clustering by mutation signatures distinguished histological subtypes, and two signatures were novel in sarcoma: (1) a strong base excision repair signature associated with NTHL1 loss and (2) a cisplatin-associated signature exclusive to platinum-treated cases. Frequent homologous recombination deficiency was observed and was associated with response to ifosfamide in three leiomyosarcomas. Of four immunotherapy-treated cases, the only responder demonstrated outlier CIBERSORT immune infiltration score, which did not correlate with PD-L1 expression. Conclusions: This is the first in-depth WGTA of metastatic sarcoma. We found recurrent and potentially targetable CNVs, expression outliers, mutation signatures, and immune markers. Our results suggest that clinical translation is promising using actionable insights obtained through WGTA.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2019
    detail.hit.zdb_id: 2005181-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 15_suppl ( 2019-05-20), p. 3535-3535
    Abstract: 3535 Background: Endogenous retrovirus (ERV) elements represent genomic footprints of ancestral retroviral infections within the human genome. Previous studies have demonstrated increases in ERV mRNA as a result of DNA hypomethylation, and ERV transcription has been associated with increased immunogenicity in metastatic renal cell carcinoma. We performed comprehensive bioinformatics analysis of ERV transcription in metastatic colorectal carcinoma (mCRC), to identify novel links between ERV transcription, epigenetic dysregulation and immunogenicity in metastatic colorectal carcinoma (mCRC). Methods: Tumour samples from 63 patients with mCRC were subjected to RNA sequencing as part of the Personalized OncoGenomics program (POG; NCT02155621) at BC Cancer. Patients were enrolled between 07/2012-07/2017. ERV transcription was quantified across 702,533 distinct loci. Tumors were classified ERV-hi if their total ERV expression (RPKM) was greater than the mean across all samples. High antiviral gene expression tumors (AVG-hi) were designated as having a mean expression of IFIH1, DDX58, TLR3, TANK, TBKBP1, TBK1, IRF3 and IRF7 that was greater than the mean across all samples. All pairwise comparisons of gene expression were subjected to multiple hypothesis correction. Results: Median age was 59 years, with 34 (54%) male and 1 tumor microsatellite unstable. ERV-hi tumors showed increased expression of DNA demethylators TET2 ( q=0.0045) and TET3 ( q 〈 0.0001). Significant overlap existed between ERV-hi and AVG-hi tumors (18/27, p=0.016). Tumors both ERV-hi and AVG-hi trended towards increased PD-L1 expression (p=0.055) and showed a significant increase in survival compared to tumors with high antiviral expression in the absence of high ERV transcription (p=0.0043). Conclusions: Our results suggest DNA demethylation drives increased ERV transcription and ERV-associated immunogenicity in mCRC. Moreover, we provide novel insight into the impact of ERV transcription on the biology of mCRC, highlighting ERV transcription as a potential biomarker and target for precision immunotherapy. Clinical trial information: NCT02155621.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2019
    detail.hit.zdb_id: 2005181-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 39, No. 3_suppl ( 2021-01-20), p. 472-472
    Abstract: 472 Background: There is emerging evidence about the predictive role of homologous recombination deficiency (HRD) in multiple cancers. The clinical utility of HRD is less well defined in gastrointestinal (GI) malignancies. Methods: We reviewed the whole genome (WGS) and transcriptomic (RNA-Seq) data of patients with advanced GI cancers between 2012-2018 in the Personalized Oncogenomics trial (NCT02155621). Scores were calculated as the sum of loss of heterozygosity, telomeric allelic imbalance, and large-scale state transitions scores. HRD was defined as a score ≥34. Mutational analysis was performed to determine the presence of mutational signature 3, which is usually strongly associated with BRCA status. Retrospective chart review was conducted to extract treatment and survival outcomes. Overall survival (OS) from initiation of first-line systemic therapy and time to progression on platinum therapy (TTPp) were calculated. Linear and multivariable regression analyses were conducted. Results: Of 154 patients with GI primaries, 56% were male and 105 (68%) were exposed to a platinum agent in the metastatic setting. Primary sites included upper GI (N=20, 9%), pancreas (N=35, 16%), colorectal (N=74, 33%), and other GI primary (N=25, 11%). Ten patients (6%) had a BRCA1/2 mutation, 20 (13%) had a high HRD score, and 11 (7%) had a high signature 3 score ( 〉 0.05). Six patients had both high HRD and high signature 3 scores (Table). On linear regression, high HRD scores and mutational signature 3 were independently associated with longer TTPp (β=4.17, 95% CI 0.15-8.19, p=0.04; β=8.03, 95% CI 2.87-13.18, p 〈 0.05, respectively). On multivariable linear regression, after adjusting for HRD score, BRCA1/2 status, and tumor site, only cases with a mutational signature 3 retained significance ( p 〈 0.05). HRD status was not prognostic for OS (HR 1.02, 95% CI 0.65-1.62, p=0.92). Conclusions: Within a cohort of patients with GI malignancies characterized by WGS and RNA-Seq, mutational signature 3 was more strongly associated with TTPp compared to HRD score. These data highlight potential predictive implications of Signature 3 to complement HRD and BRCA status in identifying patients who may benefit from exposure to platinum therapy. [Table: see text]
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2021
    detail.hit.zdb_id: 2005181-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 40, No. 4_suppl ( 2022-02-01), p. 587-587
    Abstract: 587 Background: Oncogenic driver mutations in KRAS represent a hallmark genomic event in approximately 90% of pancreatic adenocarcinoma (PDAC). For the remaining 10% of patients with KRAS wildtype (wt) PDAC, distinct driver mutations have been described, but their transcriptional landscape has not been reported. Here, we leverage sequencing data from the PanGen trial to provide a comprehensive characterization of advanced KRASwt PDAC. Methods: 63 patients with advanced PDAC received whole genome and transcriptome sequencing prior to treatment for metastatic disease as part of the PanGen trial (NCT02869802). Clinical features, somatic mutation data and gene expression patterns were compared between KRASwt and mutant groups. PDAC samples were contrasted with 77 other metastatic carcinoma (colorectal and cholangiocarcinoma) samples from the Personalized OncoGenomics trial (NCT0215562). KRAS wt-associated genes were further investigated using 3 additional PDAC cohorts (COMPASS NCT02750657, TCGA, and ICGC). Results: 9 of 63 (14%) samples were KRASwt, with an earlier median age at diagnosis (51.4 vs. 60.9 years; p=0.03). Clinical features, including diabetes, family history of malignancy, and location of primary tumor, were comparable. CA 19-9 at baseline was lower in the KRASwt group, with median 58 vs. 4900 U/mL in the KRAS-mutant group ( p=0.03). Patients with KRASwt PDAC showed increased overall survival in univariable ( p=0.0024) and multivariable ( p=0.0089) analyses. 6 of 9 (67%) KRASwt tumors had fusions involving NRG1 (n = 3), FGFR2 (n = 1), BRAF (n = 1) or NTRK2 (n = 1), while known actionable fusions were not observed in KRAS mutant patients. KRASwt tumors showed increased expression of genes associated with cholangiocytes and grouped with cholangiocarcinoma samples in unsupervised clustering analysis. Validation using three independent PDAC cohorts revealed a core set of 70 KRAS wt-associated genes that converge on keratinization, ion transport, and hormone metabolism pathways. Conclusions: Patients with KRASwt PDAC show potentially targetable molecular traits with actionable fusions. We also highlight novel mutation and expression-based similarities between KRASwt PDAC and cholangiocarcinoma samples. Recurrent dysregulation of genes involved in cellular structure and metastasis provide impetus for further investigation into the developmental trajectory and potential therapeutic vulnerabilities of KRASwt PDAC.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2022
    detail.hit.zdb_id: 2005181-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2019
    In:  Journal of Clinical Oncology Vol. 37, No. 7_suppl ( 2019-03-01), p. 509-509
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 7_suppl ( 2019-03-01), p. 509-509
    Abstract: 509 Background: mACC is a rare disease, and no standard treatments exist beyond cytotoxic chemotherapy and mitotane. Recurrent molecular changes have been described, but their clinical significance is still poorly understood, and whether they can guide treatment is unknown. Methods: The genomic and transcriptomic profiles of 6 pts with mACC were analyzed as part of a prospective molecular profiling clinical trial. Findings were correlated with histopathological and clinical data. Results: Whole genome sequencing of six ACC tumors and matched normal tissues was performed; whole-transcriptome sequencing was performed on five of the six tumors. All cases met Weiss criteria for ACC (including 1 pt with oncocytic ACC). Profiling revealed gain of function variations in CTNBB1 gene in 3 cases (p.S45A, p.S45P and homozygous deletion of exons 2 and 3). A stop-gained mutation (Q167*) and a homozygous copy loss of TP53 gene was observed in 2 cases; mutations of CTNBB1 and TP53 co-occurred in one case. Variations in other DNA repair genes included BRCA2 E790* stop-gained mutation and a structural variation in RAD52. Copy number amplification was observed for KDM5A (2/6) and RAD52 (2/6), while NF1 (1/6), CDKN2A (1/6), CDKN2B (1/6) and RB1 (2/6) were subjected to homozygous copy losses. Average ploidy models: one diploid, 4 triploid and one tetraploid case; whole chromosome copy losses and gains were seen in all samples. Three cases showed high homologous repair deficiency scores; associated with respectively, an in-frame deletion of V613 in ATM, a TP53 homozygous loss, and a structural variant of RAD52. All six cases exhibit signature 3 or signature 8. At last follow-up, 2 pts remained alive. Treatments included cytotoxic chemotherapy, mitotane, streptozotocin, sunitinib, avelumab with a SMAC mimetic, a TTK inhibitor on the basis of a CTNNB1 mutation, and temozolomide with olaparib on the basis of ATM loss. Conclusions: Our findings recapitulate published data on the molecular profile of mACC and support previous findings of large scale chromosomal variation. We identify new potential drivers in chromatin remodelling, cell cycle, and DNA damage repair genes. (NCT02155621, NCT02022098, NCT02792465).
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2019
    detail.hit.zdb_id: 2005181-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2019
    In:  Journal of Clinical Oncology Vol. 37, No. 15_suppl ( 2019-05-20), p. e16123-e16123
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 15_suppl ( 2019-05-20), p. e16123-e16123
    Abstract: e16123 Background: mACC is a rare disease, and no standard treatments exist beyond cytotoxic chemotherapy and mitotane. Recurrent molecular changes have been described, but their clinical significance is still poorly understood, and whether they can guide treatment is unknown. Methods: The genomic and transcriptomic profiles of 6 pts with mACC were analyzed as part of a prospective molecular profiling clinical trial (NCT02155621). Findings were correlated with histopathological and clinical data. Results: Whole genome sequencing of six ACC tumors and matched normal tissues was performed; whole-transcriptome sequencing was performed on five of the six tumors. All cases met Weiss criteria for ACC (including 1 pt with oncocytic ACC). Profiling revealed gain of function variations in CTNBB1 gene in 3 cases (p.S45A, p.S45P and homozygous deletion of exons 2 and 3). A stop-gained mutation (Q167*) and a homozygous copy loss of TP53 gene was observed in 2 cases; mutations of CTNBB1 and TP53 co-occurred in one case. Variations in other DNA repair genes included germline FANCA Q1362* and somatic BRCA2 E790* stop-gained mutations, and a structural variation in RAD52. Copy number amplification was observed for KDM5A (2/6) and RAD52 (2/6), while NF1 (1/6), CDKN2A (1/6), CDKN2B (1/6) and RB1 (2/6) were subjected to homozygous copy losses. Average ploidy models: one diploid, 4 triploid and one tetraploid case; whole chromosome copy losses and gains were seen in all samples. Three cases showed high homologous repair deficiency scores; associated with respectively, an in-frame deletion of V613 in ATM, a TP53 homozygous loss, and a structural variant of RAD52. All six cases exhibit signature 3 or signature 8. At last follow-up, 2 pts remained alive. Treatments included cytotoxic chemotherapy, mitotane, streptozotocin, sunitinib, avelumab with a SMAC mimetic (NCT02022098), a TTK inhibitor (NCT02792465) on the basis of a CTNNB1 mutation and temozolomide with olaparib on the basis of ATM loss. Conclusions: Our findings recapitulate published data on the molecular profile of mACC and support previous findings of large scale chromosomal variation. We identify new potential drivers in chromatin remodelling, cell cycle, and DNA damage repair genes.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2019
    detail.hit.zdb_id: 2005181-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...