Publications by authors named "Oei P"

Article Synopsis
  • This paper explores the future of global steam coal production and trade, factoring in the effects of the COVID-19 pandemic and various recovery scenarios.
  • It presents different coal demand scenarios up to 2040 that show the pandemic’s lasting impact on the market, suggesting a slower recovery than desired.
  • The findings point out that even with reduced consumption in a post-COVID world, levels remain too high to meet global climate goals, stressing the need for focused policies to manage coal decline and support vulnerable regions.
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Political decisions and trends regarding coal use for electricity generation developed differently in the UK and Germany, despite being subject to relatively similar climate protection targets and general political and economic conditions. The UK agreed on a coal phase-out by 2024. In Germany, a law schedules a coal phase-out by 2038 at the latest.

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A quarter of patients with medullary thyroid carcinoma (MTC) have germline mutations in the RET proto-oncogene indicating MEN2. Therefore genetic testing is recommended for all patients presenting with MTC. Approximately 40% of MTCs have somatic RET mutations.

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Aims: Nodular fasciitis is known to be a benign mimic of sarcoma, both clinically and histologically. Accurate diagnosis, particularly on small biopsies, remains a challenge, as the morphology can be varied and the immunophenotype is essentially non-specific. Recently, rearrangement of the ubiquitin-specific protease 6 (USP6) gene has been reported as a recurrent and specific finding in nodular fasciitis.

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Anti-epidermal growth factor receptor-targeted therapy is only indicated in RAS wild-type colorectal carcinomas (CRCs). It is recommended that both NRAS and KRAS mutation testing to be performed before a CRC is considered RAS wild-type. Given that mutation-specific immunohistochemistry (IHC) has been shown to be sensitive and specific for the detection of NRAS mutations in melanoma, we assessed the specificity of NRAS mutation-specific IHC in CRC.

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Background: The mTOR inhibitors have improved outcomes for patients with metastatic renal cell carcinoma (mRCC) but the duration of benefit is variable. Currently there are no predictive biomarkers for preselecting patients who are more likely to benefit from these agents. We undertook an exploratory translational study evaluating molecular cytogenetic changes in the context of outcomes from treatment with everolimus.

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A 10-year-old boy was diagnosed with a thick neurotropic melanoma of the lip in 2002. He is alive and well without evidence of disease recurrence 10 years later. We applied modern pathologic techniques to this lesion to highlight recent advances in melanoma diagnostics.

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The diagnosis of acute promyelocytic leukaemia (APL) is usually confirmed by cytogenetics showing the characteristic t(15;17), but a minority of patients have a masked PML/RARA fusion. We report ten patients with APL and no evidence of the t(15;17), in whom the insertion of RARA into PML could not be demonstrated by initial FISH studies using a standard dual fusion probe but was readily identified using smaller probes. Given the need for rapid diagnosis of APL, it is important to be aware of the false negative rate for large PML/RARA FISH probes in the setting of masked rearrangements.

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Objective: This study aimed to compare the efficacy and safety of a multibotanical (Nutrafem) with those of placebo for the treatment of menopausal vasomotor symptoms.

Methods: In this phase III, double-blind, randomized, placebo-controlled study, 159 postmenopausal women experiencing at least 21 vasomotor symptoms per week were treated with Nutrafem (Bionutra Pte Ltd, Singapore) or a matched placebo for 12 weeks. Treatment outcome was evaluated by the change from baseline in the average weekly number of vasomotor symptoms.

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The purpose of the present study was to investigate potential prognostic factors in low-grade oligodendrogliomas (LGOs), particularly 1p19q deletion, due to its proven prognostic significance in anaplastic oligodendrogliomas. We carried out a retrospective review of patients with a histological diagnosis of LGO between 1990 and 2000 in Auckland and Wellington, New Zealand. All cases underwent central histopathological review and FISH testing for 1p19q status.

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The implementation of effective screening programs has decreased the incidence and mortality of cervical carcinoma. However, single screening tests are subjective and carry a significant false-negative rate. Therefore, supplementary tests to support the Papanicolaou (PAP) smear are being developed.

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Plasmablastic lymphoma is an AIDS related lymphoma that continues to have a poor prognosis despite significant advances in the management of HIV and lymphoproliferative diseases. In part this has been due to limited insights into the biology of this disease and the molecular mechanisms of oncogenesis. To date molecular abnormalities have not been described in plasmablastic lymphoma, and its aggressive clinical behaviour has been difficult to understand.

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The 6p25 microdeletion syndrome comprises the Axenfeld-Rieger eye anomaly in association with a characteristic facies, developmental delay, hearing loss, and organ malformations. Skeletal anomalies in the form of hemivertebrae, clubfeet, and other positional joint anomalies have also been described in some patients. We report on a patient with a 2.

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Background: The most frequent molecular abnormality observed in dermatofibrosarcoma protuberans (DFSP) is the formation of a supernumerary ring chromosome or translocation resulting in fusion of the gene encoding the alpha-chain of type 1 collagen, COL1A1 from 17q22, to the platelet-derived growth factor beta-chain, PDGFB gene from 22q13. Rare cases documenting variant ring or marker chromosomes involving regions other than 17q22 and 22q13 have been reported. Further analysis in three of these cases demonstrated the presence of the COL1A1 and PDGFB genes.

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Recent reports of patients with interstitial deletions involving the long arm of chromosome 12 have led to the proposal of a candidate region for the cardio-facio-cutaneous syndrome (CFCS) at (12)(q21.2q22). We now report a patient with an interstitial deletion, del(12)(q21.

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Larsen syndrome is a congenital condition consisting of multiple large joint dislocations associated with a distinctive facial appearance and frequently other abnormalities. The syndrome is probably genetically heterogeneous, with both dominant and recessive inheritance reported. Previously two cases have been reported where a Larsen-like syndrome was associated with unbalanced chromosomal translocations resulting in partial trisomy 1q and monosomy distal 6p.

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An amniocentesis was performed on a 22-week pregnancy following the detection of foetal abnormalities on ultrasound. A rapid aneuploid screen using fluorescence in situ hybridisation on uncultured amniotic fluid cells revealed 3 signals for chromosome 21, consistent with trisomy 21. In situ metaphase cultures revealed a 46,XY normal male karyotype.

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A critical region exists at 5p13 for the phenotype associated with duplication 5p. Two unrelated Polynesian children are reported with supernumerary marker chromosomes (SMCs) 5. This brings to seven the total of reported SMCs derived from chromosome 5.

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Prenatal specimens were received from a fetus with abnormalities noted on ultrasound. A supernumerary marker chromosome (SMC) was detected: 47,XY,+mar. Fluorescence in situ hybridisation (FISH) further classified this to be partial tetrasomy for chromosome 14.

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We determined the hemostatic and fibrinolytic status in 60 patients with ovarian cancer and benign ovarian cysts. Hypercoagulation, increased platelets, and enhanced fibrinolysis were seen in patients with preoperative ovarian cancer compared to patients with benign ovarian cysts. Enhanced thrombin generation, evidenced by increased F1+2 and decreased antithrombin III (ATIII) levels with further enhanced fibrinolysis by elevated D-dimer, was seen in advanced cancer.

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