Arja Harila‐Saari

ORCID: 0000-0003-2767-5828
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Acute Lymphoblastic Leukemia research
  • Childhood Cancer Survivors' Quality of Life
  • Glioma Diagnosis and Treatment
  • Acute Myeloid Leukemia Research
  • Bone and Joint Diseases
  • Adolescent and Pediatric Healthcare
  • Family Support in Illness
  • Bone health and treatments
  • Cancer-related cognitive impairment studies
  • Cancer Genomics and Diagnostics
  • Vitamin D Research Studies
  • Neurological Complications and Syndromes
  • Lymphoma Diagnosis and Treatment
  • Neutropenia and Cancer Infections
  • Single-cell and spatial transcriptomics
  • Neuroblastoma Research and Treatments
  • Epigenetics and DNA Methylation
  • Autoimmune and Inflammatory Disorders Research
  • Cancer Risks and Factors
  • Nutrition and Health in Aging
  • Management of metastatic bone disease
  • Moyamoya disease diagnosis and treatment
  • Genomic variations and chromosomal abnormalities
  • Immune Cell Function and Interaction
  • Brain Metastases and Treatment

Uppsala University
2018-2025

Uppsala University Hospital
2019-2025

Nordic Society for Pediatric Hematology and Oncology
2023

Karolinska Institutet
2014-2021

Karolinska University Hospital
2013-2019

University of Copenhagen
2019

Rigshospitalet
2019

Oulu University Hospital
2002-2017

Queen Astrid Military Hospital
2016

Ludwig Cancer Research
2016

Abstract Background Although aberrant DNA methylation has been observed previously in acute lymphoblastic leukemia (ALL), the patterns of differential have not comprehensively determined all subtypes ALL on a genome-wide scale. The relationship between methylation, cytogenetic background, drug resistance and relapse is poorly understood. Results We surveyed levels 435,941 CpG sites samples from 764 children at diagnosis 27 relapse. This survey uncovered four characteristic signatures. First,...

10.1186/gb-2013-14-9-r105 article EN cc-by Genome biology 2013-09-24

Abstract Background In spite of major improvements in the cure rate childhood acute lymphoblastic leukaemia (ALL), 2–4% patients still die from treatment related complications. Procedure We investigated pattern deaths (TRDs) and possible risk factors NOPHO ALL‐92 ALL‐2000 protocols. Fifty‐five TRDs were identified among 1,645 33 1,090 patients. Results There was no significant difference incidence between two protocols (3.4% vs. 3.2%). Five died before initiation therapy (0.2%), overall...

10.1002/pbc.22719 article EN Pediatric Blood & Cancer 2010-12-08

While the prognosis of acute childhood leukemia has improved, long-term survivors are increasingly experiencing late effects treatment. Cranially irradiated predisposed to development CNS tumors. Our aim was describe incidence secondary brain tumors and define significance treatment-related risk factors host characteristics in a cohort survivors. consisted 60 consecutive cranially adult treated Oulu University Hospital (Oulu, Finland); MRI performed on 49. The sites tumors, their histology,...

10.1215/15228517-2008-122 article EN Neuro-Oncology 2009-01-30

Purpose The aim of the study was to determine incidence and clinical risk factors for radiographic osteonecrosis (ON) in children treated acute lymphoblastic leukemia (ALL) using Nordic ALL protocols. Patients Methods Ninety-seven consecutive patients with childhood were studied prospectively by magnetic resonance imaging (MRI) lower extremities at end treatment. Results Twenty-three (24%) 97 had ON. Seven (30%) symptomatic, three (13%) required surgical interventions. Multiple logistic...

10.1200/jco.2006.06.2539 article EN Journal of Clinical Oncology 2007-04-18

L-asparaginase is an important drug in the treatment of childhood acute lymphoblastic leukaemia (ALL). Treatment associated with several toxicities, including pancreatitis. Clinical course, presentation, re-exposure to L-asparginase after pancreatitis and risk recurrent within asparaginase-intensive protocol has been poorly reported. Children (1–17 years) on ongoing Nordic Society Paediatric Haematology Oncology (NOPHO) ALL2008 asparaginase-associated (AAP) diagnosed between 2008 2012 were...

10.1111/bjh.12733 article EN British Journal of Haematology 2014-01-15

Background L ‐Asparaginase is an effective drug in the treatment of childhood acute lymphoblastic leukemia (ALL). The use ‐asparaginase may be limited by serious adverse events which allergy most frequent. objective this study was to describe clinical aspects PEG‐asparaginase children treated according Nordic Society Paediatric Haematology and Oncology (NOPHO) ALL2008 protocol. Procedure Children (1–17 years) enrolled NOPHO protocol between July 2008 August 2011, who developed were...

10.1002/pbc.25319 article EN Pediatric Blood & Cancer 2014-11-21

PURPOSE Asparaginase-associated pancreatitis (AAP) is common in patients with acute lymphoblastic leukemia (ALL), but risk differences across age groups both relation to first-time AAP and after asparaginase re-exposure have not been explored. PATIENTS AND METHODS We prospectively registered (n = 168) during treatment of 2,448 consecutive ALL aged 1.0-45.9 years diagnosed from July 2008 October 2018 treated according the Nordic Society Pediatric Hematology Oncology (NOPHO) ALL2008 protocol....

10.1200/jco.19.02208 article EN cc-by-nc-nd Journal of Clinical Oncology 2019-11-26

Abstract BACKGROUND Positron emission tomography (PET) scans of primary brain tumors were performed in pediatric patients to examine whether metabolic characteristics could be used as an index clinical aggressiveness. METHODS Twenty‐seven with untreated central nervous system neoplasms studied PET using 2‐[ 18 F] fluoro‐2‐deoxy‐D‐glucose (FDG) and/or L‐[methyl‐ 11 C] methionine (MET). Metabolic assessed FDG and MET standardized uptake values (SUV) SUV‐to‐normal ratios compared histopathology...

10.1002/cncr.10798 article EN Cancer 2002-09-05

Background Interest has recently been paid to adolescents and young adults with acute lymphoblastic leukemia, particularly because all reports so far published indicate that these patients have a better outcome when treated pediatric rather than adult therapeutic protocols. There are different biological subtypes of leukemia distinct features prognoses; the distribution is not well known among adolescents. We, therefore, studied in aged 10 25 years Finland.Design Methods This...

10.3324/haematol.12466 article EN cc-by-nc Haematologica 2008-06-13

Abstract Background Despite the extensive literature on neuropsychological sequelae after treatment of childhood acute lymphoblastic leukemia (ALL), very‐long‐term neurocognitive outcome survivors is poorly studied. We assessed functioning in a population‐based cohort young adult ALL survivors. Procedure Neuropsychological testing was performed 64 an average 20 years diagnosis. The test battery included verbal intelligence quotient (VIQ) and performance (PIQ), memory function, orientation...

10.1002/pbc.21992 article EN Pediatric Blood & Cancer 2009-04-29

Background Therapy directed at the central nervous system (CNS) is an essential part of treatment for childhood acute lymphoblastic leukemia (ALL). The current evaluation CNS involvement based on cytomorphological examination cerebrospinal fluid (CSF) alone not as sensitive with low cell counts flow cytometric immunophenotyping (FCI) CSF. However, importance CSF blasts diagnosis uncertain. We sought to determine significance FCI in relation conventional morphological examination. Procedure...

10.1002/pbc.25363 article EN Pediatric Blood & Cancer 2014-12-24

Carboxypeptidase G2 (CPDG2 ) can be used as rescue treatment in cases of delayed methotrexate elimination (DME) and Mtx-induced nephrotoxicity.Between July 2008 December 2014, all children (1.0-17.9 years) the Nordic countries diagnosed with Philadelphia chromosome negative acute lymphoblastic leukemia (ALL) were treated according to Organization for Pediatric Hematology Oncology (NOPHO) ALL protocol, including administration six eight high-dose (5 g/m2 /24 hr) Mtx (HDMtx) courses. The...

10.1002/pbc.26395 article EN Pediatric Blood & Cancer 2016-12-14

Abstract Background Posterior reversible encephalopathy syndrome (PRES) is a distinct entity with incompletely known predisposing factors. The aim of this study to describe the incidence, risk factors, clinical course, and outcome PRES in childhood acute lymphoblastic leukemia (ALL). Procedure Patients aged 1.0 17.9 years diagnosed ALL from July 2008 December 2015 treated according Nordic Society Pediatric Hematology Oncology (NOPHO) ALL2008 protocol were included. identified prospective...

10.1002/pbc.27594 article EN Pediatric Blood & Cancer 2018-12-27

Abstract Functional precision medicine (FPM) aims to optimize patient-specific drug selection based on the unique characteristics of their cancer cells. Recent advancements in high throughput ex vivo profiling have accelerated interest FPM. Here, we present a proof-of-concept study for an integrated experimental system that incorporates treatment response with single-cell gene expression output enabling barcoding several conditions one sequencing experiment. We demonstrate this through...

10.1093/nargab/lqae001 article EN cc-by NAR Genomics and Bioinformatics 2024-01-05

Treatment of childhood acute lymphoblastic leukemia (ALL) may cause structural and functional brain damage. To find out the incidence white matter changes during therapy, a prospective MRI study was designed, findings were correlated with neuropsychological evaluation.Thirty-three children ALL underwent serial cranial before, during, after therapy. Twenty-eight these also assessment at end treatment. They all received intravenous intrathecal methotrexate for central nervous system (CNS) 15...

10.1002/1096-911x(20001101)35:5<456::aid-mpo3>3.0.co;2-1 article EN Medical and Pediatric Oncology 2000-01-01

Purpose Studies concerning the scholastic achievement of survivors childhood leukemia have yielded controversial results. We studied school marks in a register-based study. Patients and Methods Three hundred seventy-one patients with diagnosis before age 16 years who were born between 1974 1986 alive on their 16th birthday identified from Finnish Cancer Registry. Five matched controls sought for each patient Population Register Center Finland. Information ninth-grade report was obtained...

10.1200/jco.2006.09.4987 article EN Journal of Clinical Oncology 2007-08-08

<b>Background: </b> Cancer treatment may affect school performance. Scholastic achievements after childhood brain tumors have not been previously reported on the level of actual grades. <b>Patients and Methods: Patients with tumor (n = 300) were identified from Finnish Registry. Population controls 1,473) matched for age, gender, place living. Their ninth grade reports obtained Statistics Finland. Age at diagnosis cranial irradiation (CRT) considered in analyses, parental education was taken...

10.1212/01.wnl.0000265816.44697.b4 article EN Neurology 2007-07-16

Treatment-related osteonecrosis (ON) is a serious complication of treatment acute lymphoblastic leukemia (ALL).This study included 1,489 patients with ALL, aged 1-45 years, treated according to the Nordic Society Paediatric Haematology and Oncology ALL2008 protocol, using alternate-week dexamethasone during delayed intensification, prospective registration symptomatic ON. We aimed at comparing risk factors, timing, clinical characteristics ON in children young adults.ON was diagnosed 67...

10.1002/pbc.27300 article EN Pediatric Blood & Cancer 2018-06-26

Abstract Background Central nervous system (CNS) involvement is associated with relapse in childhood acute lymphoblastic leukemia (ALL) and a diagnostic challenge. Procedure In Nordic/Baltic prospective study, we assessed centralized flow cytometry (FCM) of locally fixed cerebrospinal fluid (CSF) samples versus local conventional cytospin‐based cytology (CC) for detecting leukemic cells evaluating kinetics elimination CSF. Results Among 300 patients newly diagnosed ALL, 87 (29%) had CSF by...

10.1002/pbc.26128 article EN Pediatric Blood & Cancer 2016-07-22

Despite progress in the treatment of childhood acute lymphoblastic leukemia, severe complications are common, and need supportive care is high. We explored cumulative prevalence, clinical risk factors, outcomes children with on first-line leukemia ICUs Sweden.A nationwide prospective register retrospective chart review study.Children were identified, demographic data obtained from Swedish Childhood Cancer Registry. Data intensive collected Intensive Care patients registered ICU admission...

10.1097/pcc.0000000000002787 article EN Pediatric Critical Care Medicine 2021-06-02

Medulloblastoma is a malignant embryonal tumor of the central nervous system (CNS) that mainly affects infants and children. Prognosis highly variable, molecular biomarkers for measurable residual disease (MRD) detection are lacking. Analysis cell-free DNA (cfDNA) in cerebrospinal fluid (CSF) using broad genomic approaches, such as low-coverage whole-genome sequencing, has shown promising prognostic value. However, more sensitive methods needed MRD analysis. Here, we show technical...

10.3390/cancers15071972 article EN Cancers 2023-03-25
Coming Soon ...