Abstract:
BACKGROUND:Treatment of glioblastoma (GB), the most common malignant primary brain tumor in adults, can include alkylating chemo-therapeutic agents. Two molecular biomarkers of treatment response are MGMT (O6-methylguanine-DNA methyltransferase) promoter methylation and IDH (isocitrate dehydrogenase) mutations, which prevent repair of tumor cell DNA damage caused by alkylating chemotherapy. The status of MGMT promoter methylation and IDH mutation are associated with longer survival and a better response to chemotherapy. OBJECTIVE:Assess the prognostic value of MGMT methylation status and IDH mutation in adult Saudi glioblastoma patients. DESIGN:Retrospective, comparative survival analysis. SETTING:Tertiary care center. PATIENTS AND METHODS:The status of the MGMT promoter methylation and IDH mutation was assessed in adult patients diagnosed with GB between 2006 and 2019. A PCR-based assay was used to analyze for methylation of the MGMT promoter. A qualitative assay combining PCR clamping and amplification refractory mutation system technology was used to search for any of the 12 most common mutations in IDH1 and IDH2. Differences in survival were compared between those with and without MGMT promoter methylation and IDH mutation and between other subgroups. MAIN OUTCOME MEASURES:Survival of GB patients relative to MGMT promoter methylation and IDH mutation status. SAMPLE SIZE:146 patients (80 males and 66 females). RESULTS:Of 43 (29.5%) cases tested for MGMT promoter methylation, 14 (32.5%) were positive. Of 65 (44.5%) cases screened for IDH mutation, 6 cases (9.2%) tested positive. The 36-month survival rate was 47% for the MGMT methylated cohort compared to 27% for their unmethylated counterparts. The 18-month survival rate for the IDH-mutant was 75% compared to 48% for their IDH-wildtype counterparts. CONCLUSION:The findings confirm the positive impact of both MGMT promoter methylation and IDH mutation on the overall survival of Saudi GB patients. LIMITATIONS:Single institute study with relatively few tested cases. CONFLICT OF INTEREST:None.
journal_name
Ann Saudi Medjournal_title
Annals of Saudi medicineauthors
Alassiri AH,Alkhaibary A,Al-Sarheed S,Alsufani F,Alharbi M,Alkhani A,Aloraidi Adoi
10.5144/0256-4947.2019.410subject
Has Abstractpub_date
2019-11-01 00:00:00pages
410-416issue
6eissn
0256-4947issn
0975-4466journal_volume
39pub_type
杂志文章abstract:BACKGROUNDS AND OBJECTIVES:B-thalassemia major is one of the most frequent hematological genetic disorders, worldwide. Chemokines are the main components of the immune system and play fundamental roles in pathogenesis of inflammatory disorders. Therefore, the present study aimed to examine whether serum CXC chemokines ...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2014.122
更新日期:2014-03-01 00:00:00
abstract:BACKGROUND:Amaranthus pollen grains are known to be highly allergenic and a potential cause of respiratory allergic diseases. Nevertheless, data on the prevalence of Amaranthus pollen in the environment is limited and almost non-existent for Saudi Arabia. METHODS:We conducted an investigation to record the airborne in...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2007.259
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abstract::This is the first population-based data in Saudi Arabia on the incidence of leukemias in the Eastern Region, as conducted by its regional tumor registry. Data on cancer were captured from all health facilities in the region in 1987-1988. Population census was derived from a survey. Data on cancer deaths were obtained ...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.1996.521
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abstract:BACKGROUND:Information on the epidemiology of viral hepatitis B, C and A in the Kingdom of Saudi Arabia (KSA) has accumulated over the last two decades. We review the changing epidemiology of these infections and suggest possible strategies for eradication. METHODS:We screened Saudi medical journals and Medline for re...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2003.367
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abstract:BACKGROUND:Exposure to stressful working conditions without adequate stress-coping strategies may lead to stress and even psychiatric morbidity. There are a dearth of studies on stress-coping strategies among consultant physicians in the Arabian Gulf. OBJECTIVES:Determine stress-coping strategies among consultants in ...
journal_title:Annals of Saudi medicine
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doi:10.5144/0256-4947.2018.214
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abstract::A 28-month-old boy mistakenly received intranasal atropine sulfate instead of Otrivin (xylometazoline hydrochloride) for the treatment of adenoid hypertrophy. Later on, he came to the emergency department with anticholinergic manifestations after the administration of multiple drops. The child presented with a tonic-c...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2019.279
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abstract:BACKGROUND:The prevalence of overweight/obesity in children in Saudi Arabia is among the highest in the world. The prevalence of dental caries is also high in Saudi children. Studies on the relationship between caries and obesity in Saudi adolescents are lacking. OBJECTIVES:To study the prevalence of overweight/obesit...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2017.114
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abstract::A treatable and preventable disorder, congenital hypothyroidism (CH) is still a common cause of mental retardation. A 17-year-old Saudi boy with CH due to an ectopic thyroid gland was diagnosed by the neonatal screening program.Thyroxine replacement therapy was started for one month when the family chose to discontinu...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2012.26.5.1137
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abstract::Although the medical literature contains adequate accounts of the pathophysiology of various benign prostatic disorders, it is often necessary to revisit these lesions, to reexamine the relationships between known benign lesions and more sinister, malignant disorders, in the light of new advances in our understanding ...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.1998.22
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abstract::Two cases of orf occuring in one family are reported. The patients developed characteristic skin lesions one week after sustaining cuts while slaughtering a sheep. The diagnosis of orf was confirmed by electron microscopy which revealed numerous large oval virus particle characteristics of parapox virus. This we belie...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.1986.49
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abstract::During December 1987 to December 1990 the incidence of neural tube defects in the Asir region located in southwestern Saudi Arabia was 0.82/1000. These results were drawn from a survey conducted of all cases of neural tube defects referred to the main hospital at Abha City (Asir Central Hospital) (ACH). Anencephaly wa...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.1992.449
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abstract::The objective of this case control study was no identify the possible associated risk factors of mild mental retardation in children. Sixty-nine parents of mildly mentally retarded (MR group) male children and a similar number of matched parents of normal male children (control) were interviewed using a questionnaire....
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.1993.355
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abstract:BACKGROUND AND OBJECTIVES:Toxoplasmosis, caused by Toxoplasma gondii, is diagnosed mainly by serological methods that are hindered by insufficient sensitivity. When it fails, it becomes necessary to rely on either direct detection of the parasite or DNA detection by polymerase chain reaction (PCR). We aimed to establis...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2012.14.7.1200
更新日期:2012-09-01 00:00:00
abstract:BACKGROUND:Clinical presentation of type II diabetes mellitus (DM) has frequently been observed at an early age in developing countries, probably as a result of genetic, epidemiological and demographic factors. This study aimed to investigate the pattern of familial clustering of type II DM in patients who developed cl...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.1999.308
更新日期:1999-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Genomic scan analyses have suggested that the chemokine receptor cluster (CCR2, CCR3, CCR5 <300 kb span) on the short arm of chromosome 3 may contribute to susceptibility to HIV-1 infection and to the expression of a number of inflammatory diseases. Two single-nucleotide polymorphisms (SNP) an...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.4103/0256-4947.60516
更新日期:2010-03-01 00:00:00
abstract::Many countries now struggle to provide cost-effective, quality healthcare services to their citizens. Saudi Arabia has experienced high costs along with concerns about quality of care in its public facilities. To address these issues the country is currently restructuring their healthcare system to privatize public ho...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2008.243
更新日期:2008-07-01 00:00:00
abstract::Two hundred twenty-four patients presenting consecutively with massive upper gastrointestinal hemorrhage were endoscoped within 24 hours to determine the site of bleeding. Outcome was evaluated in relation with presenting variables. Duodenal ulcer was found to be the most common source of bleeding. Endoscopy demonstra...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.1991.539
更新日期:1991-09-01 00:00:00
abstract::Evidence of cardiovascular complications associated with the COVID-19 global pandemic continues to evolve. These include direct and indirect myocardial injury with subsequent acute myocardial ischemia, and cardiac arrhythmia. Some results from a limited number of trials of antiviral medications, along with chloroquine...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章,评审
doi:10.5144/0256-4947.2020.365
更新日期:2020-09-01 00:00:00
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journal_title:Annals of Saudi medicine
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doi:10.5144/0256-4947.2019.118
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journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2012.433
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journal_title:Annals of Saudi medicine
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journal_title:Annals of Saudi medicine
pub_type: 杂志文章
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journal_title:Annals of Saudi medicine
pub_type: 杂志文章
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更新日期:2000-09-01 00:00:00
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journal_title:Annals of Saudi medicine
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doi:10.5144/0256-4947.2007.179
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journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.1997.515
更新日期:1997-09-01 00:00:00
abstract:AIMS:Type 2 diabetes mellitus (T2DM) is characterized by both decreased insulin sensitivity and impaired insulin secretion. The 2 phases of insulin secretion are the first-phase insulin secretion (1st ISEC) and the second-phase insulin secretion. In this study, we tried to build clinical-metabolic models to predict the...
journal_title:Annals of Saudi medicine
pub_type: 杂志文章
doi:10.5144/0256-4947.2015.138
更新日期:2015-03-01 00:00:00
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journal_title:Annals of Saudi medicine
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doi:10.5144/0256-4947.1995.462
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journal_title:Annals of Saudi medicine
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journal_title:Annals of Saudi medicine
pub_type: 杂志文章
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