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Ashouri K, Nittur V, Ginosyan AA, Hwang J, Adnani B, Chen D, Savitala-Damerla L, Schiff K, Chaudhary P, Kovach AE, Ladha A, Siddiqi I, Ali A, Woan K, Tam E, Yaghmour G. Concordance of Next-Generation Sequencing and Multiparametric Flow Cytometry Methods for Detecting Measurable Residual Disease in Adult Acute Lymphoblastic Leukemia: Optimizing Prediction of Clinical Outcomes From a Single-Center Study. Clin Lymphoma Myeloma Leuk 2024; 24:e59-e66.e2. [PMID: 38061959 DOI: 10.1016/j.clml.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/14/2023] [Accepted: 11/14/2023] [Indexed: 03/01/2024]
Abstract
INTRODUCTION Detection of measurable residual disease (MRD) in adults with acute lymphoblastic leukemia (ALL) is a vital biomarker in risk prediction and treatment selection. Next-generation sequencing (NGS) offers greater sensitivity relative to multiparametric flow cytometry (MFC) and may be a better predictive tool for identifying ALL patients at risk of relapse. PATIENTS AND METHODS This single-center retrospective study compares MRD detection by NGS versus MFC in 52 adult B- and T-ALL patients treated at our institution between 2018 and 2023. Pretreatment bone marrow samples were used for assay calibration, while post-treatment MRD assessment was completed up to 4.5 months after the first complete remission (CR1) using an MRD cutoff of 10-6 for distinguishing relapse risk. RESULTS The 2-year cumulative incidence of relapse (CIR) among patients who were MRD positive using MFC and NGS was 39.5% and 46.2%, respectively. Unlike MFC, post-CR1 MRD positivity with NGS significantly predicted CIR (HR = 9.47, P = .028). In patients who were MRD negative by MFC, low levels of MRD detected by NGS distinguished patients at high risk of relapse (HR 10.3, P = .026, 2-year CIR 51.6%). CONCLUSION Our data suggests that assessment of post-CR1 MRD using a highly sensitive NGS assay can identify ALL patients undergoing frontline therapy at increased risk of relapse and guide the use of adjuvant therapy.
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Affiliation(s)
- Karam Ashouri
- Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Vinay Nittur
- Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Anush A Ginosyan
- Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Jennifer Hwang
- Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Blake Adnani
- Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Denaly Chen
- Jane Anne Nohl Division of Hematology and Center for the study of Blood disease, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA
| | - Lakshmi Savitala-Damerla
- Jane Anne Nohl Division of Hematology and Center for the study of Blood disease, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA
| | - Kimberly Schiff
- Jane Anne Nohl Division of Hematology and Center for the study of Blood disease, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA
| | - Preet Chaudhary
- Jane Anne Nohl Division of Hematology and Center for the study of Blood disease, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA
| | - Alexandra E Kovach
- Keck School of Medicine, University of Southern California, Los Angeles, CA; Hematopathology, Department of Pathology and Laboratory Medicine, Children's Hospital Los Angeles, Los Angeles, CA
| | - Abdullah Ladha
- Jane Anne Nohl Division of Hematology and Center for the study of Blood disease, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA
| | - Imran Siddiqi
- Keck School of Medicine, University of Southern California, Los Angeles, CA; Division of Pathology, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA
| | - Amir Ali
- Department of Pharmacy, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA
| | - Karrune Woan
- Jane Anne Nohl Division of Hematology and Center for the study of Blood disease, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA
| | - Eric Tam
- Jane Anne Nohl Division of Hematology and Center for the study of Blood disease, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA
| | - George Yaghmour
- Jane Anne Nohl Division of Hematology and Center for the study of Blood disease, University of Southern California, Norris Comprehensive Cancer Center, Los Angeles, CA.
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Davis JA, Ross JRM, Bezalel S, Sim L, Bonnema A, Ichikawa G, Heim WA, Schiff K, Eagles-Smith CA, Ackerman JT. Hg concentrations in fish from coastal waters of California and Western North America. Sci Total Environ 2016; 568:1146-1156. [PMID: 27067833 DOI: 10.1016/j.scitotenv.2016.03.093] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 03/12/2016] [Accepted: 03/13/2016] [Indexed: 06/05/2023]
Abstract
The State of California conducted an extensive and systematic survey of mercury (Hg) in fish from the California coast in 2009 and 2010. The California survey sampled 3483 fish representing 46 species at 68 locations, and demonstrated that methylHg in fish presents a widespread exposure risk to fish consumers. Most of the locations sampled (37 of 68) had a species with an average concentration above 0.3μg/gwet weight (ww), and 10 locations an average above 1.0μg/gww. The recent and robust dataset from California provided a basis for a broader examination of spatial and temporal patterns in fish Hg in coastal waters of Western North America. There is a striking lack of data in publicly accessible databases on Hg and other contaminants in coastal fish. An assessment of the raw data from these databases suggested the presence of relatively high concentrations along the California coast and in Puget Sound, and relatively low concentrations along the coasts of Alaska and Oregon, and the outer coast of Washington. The dataset suggests that Hg concentrations of public health concern can be observed at any location on the coast of Western North America where long-lived predator species are sampled. Output from a linear mixed-effects model resembled the spatial pattern observed for the raw data and suggested, based on the limited dataset, a lack of trend in fish Hg over the nearly 30-year period covered by the dataset. Expanded and continued monitoring, accompanied by rigorous data management procedures, would be of great value in characterizing methylHg exposure, and tracking changes in contamination of coastal fish in response to possible increases in atmospheric Hg emissions in Asia, climate change, and terrestrial Hg control efforts in coastal watersheds.
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Affiliation(s)
- J A Davis
- San Francisco Estuary Institute, 4911 Central Avenue, Richmond, CA 94804, USA.
| | - J R M Ross
- San Francisco Estuary Institute, 4911 Central Avenue, Richmond, CA 94804, USA.
| | - S Bezalel
- San Francisco Estuary Institute, 4911 Central Avenue, Richmond, CA 94804, USA.
| | - L Sim
- San Francisco Estuary Institute, 4911 Central Avenue, Richmond, CA 94804, USA.
| | - A Bonnema
- Marine Pollution Studies Lab, 7544 Sandholdt Road, Moss Landing, CA 95039, USA.
| | - G Ichikawa
- Marine Pollution Studies Lab, 7544 Sandholdt Road, Moss Landing, CA 95039, USA.
| | - W A Heim
- Marine Pollution Studies Lab, 7544 Sandholdt Road, Moss Landing, CA 95039, USA.
| | - K Schiff
- Southern California Coastal Water Research Project, 3535 Harbor Blvd., Suite 110, Costa Mesa, CA 92626, USA.
| | - C A Eagles-Smith
- U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA.
| | - J T Ackerman
- U.S. Geological Survey, Western Ecological Science Center, Dixon Field Station, 800 Business Park Drive, Dixon, CA 95620, USA.
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Abstract
Sources of the indicator bacteria total coliform, fecal coliform, and enterococcus were investigated in stormwater flows discharging to Mission Bay, a heavily used aquatic park in San Diego, California. Stormwater flows were targeted because long-term receiving water monitoring of the bay indicated that wet weather discharges were the predominant source of bacterial contamination. Exceedences in water quality objectives for body contact recreation established by the State of California most often occurred in the east bay, where the least amount of circulation and largest quantities of stormwater discharges occur. Unlike the wet weather results, almost all of the 89 storm drains that discharge to the bay either did not have flowing fresh water or did not contain exceedingly high bacteria densities during dry weather. Upstream tracking during multiple storm events on two of the largest watersheds draining to the bay showed that sources of indicator bacteria were diffuse and widespread. Densities were as high at the head of each watershed as they were at the mouth, where both discharged to the bay. Every reach in each creek exceeded State of California water quality objectives and had densities similar to surface flows measured before they entered the separate municipal storm sewer system from urban land uses, such as residential, commercial, and industrial, as well as open lands.
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Affiliation(s)
- K Schiff
- Southern California Coastal Water Research Project, Westminster 92683, USA.
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Skinner L, de Peyster A, Schiff K. Developmental effects of urban storm water in Medaka (Oryzias latipes) and inland silverside (Menidia beryllina). Arch Environ Contam Toxicol 1999; 37:227-235. [PMID: 10398773 DOI: 10.1007/s002449900509] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Stormwater runoff in a coastal urban area (San Diego County, CA) produced significant toxicity to early life stages of medaka (Oryzias latipes) and Menidia (M. beryllina). Exposure of embryos to lower concentrations (5 to 25%) increased the incidence of abnormal swim bladder inflation and other teratogenic responses, whereas higher concentrations resulted in mortality or failure to hatch. Comparisons of EC50s for mortality and failure to hatch with concentrations of individual chemical pollutants (including Cd, Cr, Cu, Pb, Ni, and Zn) revealed low correlations; however, the correlation with total metals was high (-0.84) and corresponded with sample exceedences of Water Quality Criteria (WQC) for Cd, Cu, Pb, and Zn. This strong association between developmental toxicity and toxic metal content of storm water compared favorably with developmental anomalies reported in other studies. Analytical chemistry data for pesticides that may have been in these samples were limited to selected pesticides found usually below detection limits. Greater toxicity of the watershed effluents sampled was generally associated with more developed land surface and less open space. Both medaka and Menidia were found to be useful for studying effects of stormwater on embryonic and early larval development. http://link.springer-ny. com/link/service/journals/00244/bibs/37n2p227.html
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Affiliation(s)
- L Skinner
- San Diego County Department of Environmental Health, P.O. Box 129261, San Diego, California 92112-9261, USA
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