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Showing papers by "Alexander Krasnitz published in 2018"


Journal ArticleDOI
17 Apr 2018-Immunity
TL;DR: An extensive immunogenomic analysis of more than 10,000 tumors comprising 33 diverse cancer types by utilizing data compiled by TCGA identifies six immune subtypes that encompass multiple cancer types and are hypothesized to define immune response patterns impacting prognosis.

3,246 citations



Journal ArticleDOI
TL;DR: A pancreatic cancer patient-derived organoid (PDO) library is generated that recapitulates the mutational spectrum and transcriptional subtypes of primary Pancreatic cancer and proposes that combined molecular and therapeutic profiling of PDOs may predict clinical response and enable prospective therapeutic selection.
Abstract: Pancreatic cancer is the most lethal common solid malignancy. Systemic therapies are often ineffective and predictive biomarkers to guide treatment are urgently needed. We generated a pancreatic cancer patient-derived organoid (PDO) library that recapitulates the mutational spectrum and transcriptional subtypes of primary pancreatic cancer. New driver oncogenes were nominated and transcriptomic analyses revealed unique clusters. PDOs exhibited heterogeneous responses to standard-of-care chemotherapeutics and investigational agents. In a case study manner, we find that PDO therapeutic profiles paralleled patient outcomes and that PDOs enable longitudinal assessment of chemo-sensitivity and evaluation of synchronous metastases. We derived organoid-based gene expression signatures of chemo-sensitivity that predicted improved responses for many patients to chemotherapy in both the adjuvant and advanced disease settings. Finally, we nominated alternative treatment strategies for chemo-refractory PDOs using targeted agent therapeutic profiling. We propose that combined molecular and therapeutic profiling of PDOs may predict clinical response and enable prospective therapeutic selection.

608 citations


Journal ArticleDOI
TL;DR: It is demonstrated that sparse DNA sequencing of single-cell nuclei from prostate core biopsies is a rich source of quantitative parameters for evaluating neoplastic growth and aggressiveness, yielding novel genomic measures with the potential to improve the accuracy of diagnosis and prognosis in prostate cancer.
Abstract: A distinction between indolent and aggressive disease is a major challenge in diagnostics of prostate cancer. As genetic heterogeneity and complexity may influence clinical outcome, we have initiated studies on single tumor cell genomics. In this study, we demonstrate that sparse DNA sequencing of single-cell nuclei from prostate core biopsies is a rich source of quantitative parameters for evaluating neoplastic growth and aggressiveness. These include the presence of clonal populations, the phylogenetic structure of those populations, the degree of the complexity of copy-number changes in those populations, and measures of the proportion of cells with clonal copy-number signatures. The parameters all showed good correlation to the measure of prostatic malignancy, the Gleason score, derived from individual prostate biopsy tissue cores. Remarkably, a more accurate histopathologic measure of malignancy, the surgical Gleason score, agrees better with these genomic parameters of diagnostic biopsy than it does with the diagnostic Gleason score and related measures of diagnostic histopathology. This is highly relevant because primary treatment decisions are dependent upon the biopsy and not the surgical specimen. Thus, single-cell analysis has the potential to augment traditional core histopathology, improving both the objectivity and accuracy of risk assessment and inform treatment decisions.Significance: Genomic analysis of multiple individual cells harvested from prostate biopsies provides an indepth view of cell populations comprising a prostate neoplasm, yielding novel genomic measures with the potential to improve the accuracy of diagnosis and prognosis in prostate cancer. Cancer Res; 78(2); 348-58. ©2017 AACR.

24 citations


01 Jul 2018
TL;DR: This book presents a meta-modelling framework called “Smart grids” that automates the very labor-intensive and therefore time-heavy and therefore expensive and expensive process of designing and implementing smart grids.
Abstract: [Malta, Tathiane M.; Poisson, Laila; Noushmehr, Houtan] Henry Ford Hlth Syst, Detroit, MI USA. [Sokolov, Artem] Harvard Med Sch, Boston, MA 02115 USA. [Gentles, Andrew J.; Gevaert, Olivier] Stanford Univ, Palo Alto, CA 94304 USA. [Burzykowski, Tomasz] Hasselt Univ, Diepenbeek, Belgium. [Weinstein, John; Lazar, Alexander J.] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA. [Kaminska, Bozena] PAS, Nencki Inst Expt Biol, Warsaw, Poland. [Huelsken, Joerg] Ecole Polytech Fed Lausanne, Swiss Inst Technol, Lausanne, Switzerland. [Omberg, Larsson] Sage Bionetworks, Seattle, WA USA. [Colaprico, Antonio] Univ Libre Bruxelles, Brussels, Belgium. [Czerwinska, Patrycja; Mazurek, Sylwia] Poznan Univ Med Sci, Poznan, Poland. [Mishra, Lopa] George Washington Univ, Washington, DC USA. [Heyn, Holger] Ctr Genom Regulat CNAG CRG, Barcelona, Spain. [Krasnitz, Alex] Cold Spring Harbor Lab, POB 100, Cold Spring Harbor, NY 11724 USA. [Godwin, Andrew K.] Univ Kansas, Med Ctr, Kansas City, KS 66103 USA. [Stuart, Joshua M.] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. [Hoadley, Katherine] Univ N Carolina, Chapel Hill, NC 27515 USA. [Laird, Peter W.] Van Andel Res Inst, Grand Rapids, MI USA. [Wiznerowicz, Maciej] Int Inst Mol Oncol, Poznan, Poland.

1 citations