Management of Multiple Myeloma: A Review for General Practitioners in Oncology.

Multiple myeloma (MM) is a malignant clonal plasma cell disorder in the bone marrow and is the second-most common hematologic malignancy in adults. Although patients with MM have a moderate life expectancy, it remains a heterogeneous disease that often requires multiple lines of chemotherapy for durable control and long-term survival. This review outlines current management strategies for both transplant-eligible and transplant-ineligible patients as well as for relapsed and refractory disease.

In-Person or Online? The Effect of Delivery Mode on Team-Based Learning of Clinical Reasoning in a Family Medicine Clerkship.

In health professions education, team-based learning (TBL) has been used to help learners develop clinical reasoning and decision-making skills. The COVID-19 pandemic has challenged institutions to move curriculum delivery from largely in-person to online. With the anticipated return to in-person instruction and arguments made in favor of online instruction in certain circumstances, evidence is needed to support decision making in curriculum planning.

Five ways to get a grip on evaluating and improving educational continuity in health professions education programs.

Presence of educational continuity is essential for progressive development of competence. Educational continuity appears to be a simple concept, but in practice, it is challenging to implement and evaluate because of its multifaceted nature. In this Black Ice article, we present some practical tips to help avoid misunderstandings and irregularities in implementation for those involved in evaluating and improving educational continuity in health professions education programs.

Detection of genomic alterations in breast cancer with circulating tumour DNA sequencing.

Analysis of circulating cell-free DNA (cfDNA) has opened new opportunities for characterizing tumour mutational landscapes with many applications in genomic-driven oncology. We developed a customized targeted cfDNA sequencing approach for breast cancer (BC) using unique molecular identifiers (UMIs) for error correction. Our assay, spanning a 284.

Continuity of supervision: Does it mean what we think it means?

Context: Continuity of supervision (CoS) is generally accepted as an important element of competency-based medical education (CBME). However, collecting and interpreting evidence for its effectiveness are a challenge because we lack a shared understanding of CoS. Translating the available evidence about CoS into practice is an even greater challenge because the evidence largely exists in the undergraduate medical education (UME) literature, whereas literature about CBME is mostly situated in postgraduate medical education (PGME).

Comparison of clinical efficacy and renal safety of telbivudine and entecavir in chronic hepatitis B patients receiving cytotoxic chemotherapy.

Objective: Limited data is available on the clinical outcomes of telbivudine (LdT) and entecavir (ETV) in pre-emptive antiviral chemoprophylaxis. This study aimed to evaluate the clinical efficacy and renal safety of LdT and ETV in patients with chronic hepatitis B (CHB) who received cytotoxic chemotherapy.

Methods: Altogether 290 treatment-naïve CHB patients undergoing intense chemotherapy were enrolled to receive daily 600 mg of LdT or 0.

Severe ileitis associated with capecitabine: Two case reports and review of the literature.

Capecitabine is a commonly used anticancer drug, which has been associated with adverse events, including skin and gastrointestinal symptoms, such as vomiting and diarrhea. We herein present treated two rare cases of capecitabine-associated ileitis. In one of the patients, ileitis occurred during combination chemotherapy for metastatic colon cancer, despite previous good tolerance to this drug; the other patient developed ileitis following adjuvant single-agent treatment.

Whole-exome sequencing of breast cancer, malignant peripheral nerve sheath tumor and neurofibroma from a patient with neurofibromatosis type 1.

Neurofibromatosis type 1 (NF1) is a genetic disorder characterized by the development of multiple neurofibromas, cafe-au-lait spots, and Lisch nodules. Individuals with NF1 are at increased risk of developing various tumors, such as malignant peripheral nerve sheath tumor (MPNST), pheochromocytoma, leukemia, glioma, rhabdomyosarcoma, and breast cancer. Here, we describe the exome sequencing of breast cancer, MPNST, and neurofibroma from a patient with NF1.

Predictive Factors for BRCA1 and BRCA2 Genetic Testing in an Asian Clinic-Based Population.

Purpose: The National Comprehensive Cancer Network (NCCN) has proposed guidelines for the genetic testing of the BRCA1 and BRCA2 genes, based on studies in western populations. This current study assessed potential predictive factors for BRCA mutation probability, in an Asian population.

Methods: A total of 359 breast cancer patients, who presented with either a family history (FH) of breast and/or ovarian cancer or early onset breast cancer, were accrued at the National Cancer Center Singapore (NCCS).

microRNAs in breast cancer: regulatory roles governing the hallmarks of cancer.

A large number of etiological factors and the complexity of breast cancers present challenges for prevention and treatment. Recently, the emergence of microRNAs (miRNAs) as cancer biomarkers has added an extra dimension to the 'molecular signatures' of breast cancer. Bioinformatic analyses indicate that each miRNA can regulate hundreds of target genes and could serve functionally as 'oncogenes' or 'tumour suppressor' genes, and co-ordinate multiple cellular processes relevant to cancer progression.

The NF1 gene revisited - from bench to bedside.

Neurofibromatosis type 1 (NF1) is a relatively common tumour predisposition syndrome related to germline aberrations of NF1, a tumour suppressor gene. The gene product neurofibromin is a negative regulator of the Ras cellular proliferation pathway, and also exerts tumour suppression via other mechanisms. Recent next-generation sequencing projects have revealed somatic NF1 aberrations in various sporadic tumours.

Detecting novel genetic variants associated with isoniazid-resistant Mycobacterium tuberculosis.

Background: Isoniazid (INH) is a highly effective antibiotic central for the treatment of Mycobacterium tuberculosis (MTB). INH-resistant MTB clinical isolates are frequently mutated in the katG gene and the inhA promoter region, but 10 to 37% of INH-resistant clinical isolates have no detectable alterations in currently known gene targets associated with INH-resistance. We aimed to identify novel genes associated with INH-resistance in these latter isolates.

Evaluation and optimisation of indel detection workflows for ion torrent sequencing of the BRCA1 and BRCA2 genes.

Background: The Ion Torrent PGM is a popular benchtop sequencer that shows promise in replacing conventional Sanger sequencing as the gold standard for mutation detection. Despite the PGM's reported high accuracy in calling single nucleotide variations, it tends to generate many false positive calls in detecting insertions and deletions (indels), which may hinder its utility for clinical genetic testing.

Results: Recently, the proprietary analytical workflow for the Ion Torrent sequencer, Torrent Suite (TS), underwent a series of upgrades.

Identification of circulating microRNA signatures for breast cancer detection.

Purpose: There is a quest for novel noninvasive diagnostic markers for the detection of breast cancer. The goal of this study is to identify circulating microRNA (miRNA) signatures using a cohort of Asian Chinese patients with breast cancer, and to compare miRNA profiles between tumor and serum samples.

Experimental Design: miRNA from paired breast cancer tumors, normal tissue, and serum samples derived from 32 patients were comprehensively profiled using microarrays or locked nucleic acid real-time PCR panels.

Improving indel detection specificity of the Ion Torrent PGM benchtop sequencer.

The emergence of benchtop sequencers has made clinical genetic testing using next-generation sequencing more feasible. Ion Torrent's PGM™ is one such benchtop sequencer that shows clinical promise in detecting single nucleotide variations (SNVs) and microindel variations (indels). However, the large number of false positive indels caused by the high frequency of homopolymer sequencing errors has impeded PGM™'s usage for clinical genetic testing.

Development of a next-generation sequencing method for BRCA mutation screening: a comparison between a high-throughput and a benchtop platform.

In a clinical setting, next-generation sequencing (NGS) approaches for the enrichment and resequencing of DNA targets may have limitations in throughput, cost, or accuracy. We evaluated an NGS workflow for targeted DNA sequencing for mutation detection. Targeted sequence data of the BRCA1 and BRCA2 genes, generated using a PCR-based, multiplexed NGS approach using the SOLiD 4 (n = 24) and Ion Torrent PGM (n = 20) next-generation sequencers, were evaluated against sequence data obtained by Sanger sequencing.

High-resolution melting analysis for the rapid detection of fluoroquinolone and streptomycin resistance in Mycobacterium tuberculosis.

Background: Molecular methods for the detection of drug-resistant tuberculosis are potentially more rapid than conventional culture-based drug susceptibility testing, facilitating the commencement of appropriate treatment for patients with drug resistant tuberculosis. We aimed to develop and evaluate high-resolution melting (HRM) assays for the detection of mutations within gyrA, rpsL, and rrs, for the determination of fluoroquinolone and streptomycin resistance in Mycobacterium tuberculosis (MTB).

Methodology/principal Findings: A blinded series of DNA samples extracted from a total of 92 clinical isolates of MTB were analyzed by HRM analysis, and the results were verified using DNA sequencing.

Evaluation of nanofluidics technology for high-throughput SNP genotyping in a clinical setting.

The current need for high-throughput genotyping platforms for targeted validation of disease-associated single nucleotide polymorphisms (SNPs) motivated us to evaluate a novel nanofluidics platform for genotyping DNA extracted from peripheral blood and buccal wash samples. SNP genotyping was performed using a Fluidigm 48.48 Dynamic Array biochip on the BioMark polymerase chain reaction platform and results were compared against standard TaqMan assays and DNA sequencing.