Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 79
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
Oncologist ; 2024 May 07.
Artigo em Inglês | MEDLINE | ID: mdl-38713191

RESUMO

Tumor mutation profiling (MP) is often conducted on tissue from biopsies conducted for clinical purposes (diagnostic tissue). We aimed to explore the views of patients with cancer on who should own tumor biopsy tissue, pay for its storage, and decide on its future use; and determine their attitudes to and predictors of undergoing additional biopsies if required for research purposes. In this mixed methods, cross-sectional study, patients with advanced solid cancers enrolled in the Molecular Screening and Therapeutics Program (n = 397) completed a questionnaire prior to undergoing MP (n = 356/397). A subset (n = 23) also completed a qualitative interview. Fifty percent of participants believed they and/or relatives should own and control access to diagnostic tissue. Most (65.5%) believed the government should pay for tissue preparation. Qualitative themes included (1) custodianship of diagnostic tissue, (2) changing value of tissue across time and between cultures, (3) equity regarding payment, and (4) cost-benefit considerations in deciding on additional biopsies. Policy and regulation should consider patient perspectives. Extension of publicly funded health care to include tissue retrieval for clinical trials should be considered.

2.
Future Oncol ; 20(7): 361-371, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37767626

RESUMO

ASPiRATION is a national prospective observational cohort study assessing the feasibility, clinical and economic value of up-front tissue-based comprehensive genomic profiling (CGP) to identify actionable genomic alterations in participants with newly diagnosed metastatic non-squamous non-small-cell lung cancer in Australia. This study will enrol 1000 participants with tumor available for CGP and standard of care molecular testing (EGFR/ALK/ROS1). Participants with actionable variants may receive novel targeted treatments through ASPiRATION-specific substudies, other trials/programs. Clinical outcome data will be collected for a minimum of 2 years. Study outcomes are descriptive, including the ability of CGP to identify additional actionable variants, leading to personalized treatment recommendations, and will describe the feasibility, efficiency, cost and utility of implementation of CGP nationally.


Lung cancer is the most common cause of cancer death in Australia and worldwide. This disease often happens due to alterations in specific genes that allow cancer cells to develop and spread. Scientists have designed targeted drugs that are better at attacking cancer cells that have specific 'actionable' gene alterations and have less effect on other cells in the body. The result is often more benefit from treatment and fewer side effects than other standard treatments (chemotherapy or immunotherapy). The targeted drugs are well established as the best initial treatments for some gene alterations, but more research is needed to know if this is true for some of the less common or recently identified gene alterations, and where the targeted drugs are very new. Comprehensive genomic profiling is a new way of testing lung cancer cells for all the gene alterations (the well-known ones as well as the rare ones) in a single test. It is expected that this test will find many more of these gene alterations, which will allow more people to have safer and more effective targeted treatments leading to potentially better outcomes, and will allow some people to join clinical trials testing newer targeted treatments. The ASPiRATION study will help work out whether comprehensive genomic profiling is better than the current way of testing for gene alterations in Australia, and if it is feasible to use in all people diagnosed with advanced lung cancer in Australia. Clinical Trial Registration: ACTRN12621000221853 (ANZCTR).


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Neoplasias Pulmonares/patologia , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Estudos Prospectivos , Proteínas Tirosina Quinases/genética , Mutação , Austrália , Proteínas Proto-Oncogênicas/genética , Genômica , Estudos Observacionais como Assunto
3.
Br J Cancer ; 129(3): 475-485, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37365284

RESUMO

PURPOSE: To determine the safety and efficacy of PARP plus PD-L1 inhibition (olaparib + durvalumab, O + D) in patients with advanced solid, predominantly rare cancers harbouring homologous recombination repair (HRR) defects. PATIENTS AND METHODS: In total, 48 patients were treated with O + D, 16 with BRCA1/2 alterations (group 1) and 32 with other select HRR alterations (group 2). Overall, 32 (66%) patients had rare or less common cancers. The primary objective of this single-arm Phase II trial was a progression-free survival rate at 6 months (PFS6). Post hoc exploratory analyses were conducted on archival tumour tissue and serial bloods. RESULTS: The PFS6 rate was 35% and 38% with durable objective tumour responses (OTR) in 3(19%) and 3(9%) in groups 1 and 2, respectively. Rare cancers achieving an OTR included cholangiocarcinoma, perivascular epithelioid cell (PEComa), neuroendocrine, gallbladder and endometrial cancer. O + D was safe, with five serious adverse events related to the study drug(s) in 3 (6%) patients. A higher proportion of CD38 high B cells in the blood and higher CD40 expression in tumour was prognostic of survival. CONCLUSIONS: O + D demonstrated no new toxicity concerns and yielded a clinically meaningful PFS6 rate and durable OTRs across several cancers with HRR defects, including rare cancers.


Assuntos
Proteína BRCA1 , Neoplasias do Endométrio , Feminino , Humanos , Proteína BRCA1/genética , Reparo de DNA por Recombinação/genética , Proteína BRCA2/genética , Ftalazinas/efeitos adversos
4.
Am J Med Genet A ; 188(3): 725-734, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-34755933

RESUMO

This study assessed the psychological predictors of preferences for return of comprehensive tumor genomic profiling (CTGP) results in patients with advanced cancers, enrolled in the Molecular Screening and Therapeutics Program. Patients completed a questionnaire prior to undergoing CTGP. Of the 1434 who completed a questionnaire, 96% would like to receive results that can guide treatment for their cancer, and preference for receiving this type of result was associated with lower tolerance of uncertainty. Sixty-four percent would like to receive results that cannot guide treatment, and lower tolerance of uncertainty, self-efficacy, and perceived importance were associated with this preference. Fifty-nine percent would like to receive variants of unknown significance, which was associated with lower tolerance of uncertainty, higher self-efficacy, and perceived importance. Eighty-six percent wanted to receive germline results that could inform family risk. This was associated with higher self-efficacy, perceived importance, and perceived susceptibility. Although most patients wanted to receive all types of results, given the differing patient preferences regarding the return of results depending on the utility of the different types of results, it appears critical to safeguard patient understanding of result utility to achieve informed patient choices. This should be accompanied by appropriate consent processes.


Assuntos
Neoplasias , Preferência do Paciente , Genoma , Genômica/métodos , Humanos , Neoplasias/patologia , Preferência do Paciente/psicologia , Inquéritos e Questionários
5.
Support Care Cancer ; 30(10): 8201-8210, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35809119

RESUMO

PURPOSE: The introduction of comprehensive tumour genomic profiling (CGP) into clinical oncology allows the identification of molecular therapeutic targets. However, the potential complexity of genomic results and their implications may cause confusion and distress for patients undergoing CGP. We investigated the experience of advanced cancer patients receiving CGP results in a research setting. METHODS: Semi-structured interviews with 37 advanced cancer patients were conducted within two weeks of patients receiving CGP results. Interviewees were purposively sampled based on CGP result, cancer type, age and gender to ensure diversity. Themes were derived from interview transcripts using a framework analysis approach. RESULTS: We identified six themes: (1) hoping against the odds; (2) managing expectations; (3) understanding is cursory; (4) communication of results is cursory; (5) genomics and incurable cancer; and (6) decisions about treatment. CONCLUSION: Despite enthusiasm regarding CGP about the hope it provides for new treatments, participants experienced challenges in understanding results, and acceptance of identified treatments was not automatic. Support is needed for patients undergoing CGP to understand the implications of testing and cope with non-actionable results.


Assuntos
Genômica , Neoplasias , Genômica/métodos , Humanos , Oncologia , Neoplasias/genética , Neoplasias/terapia , Pesquisa Qualitativa
6.
J Med Genet ; 58(1): 20-24, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32179705

RESUMO

BACKGROUND: Although considerable effort has been put into decoding of the osteosarcoma genome, very little is known about germline mutations that underlie this primary malignant tumour of bone. METHODS AND RESULTS: We followed here a coincidental finding in a multiple endocrine neoplasia family in which a 32-year-old patient carrying a germline pathogenic RET mutation developed an osteosarcoma 2 years after the resection of a medullary thyroid carcinoma. Sequencing analysis of additional 336 patients with osteosarcoma led to the identification of germline activating mutations in the RET proto-oncogene in three cases and somatic amplifications of the gene locus in five matched tumours (4%, n=5/124 tumours). Functional analysis of the pathogenic variants together with an integrative analysis of osteosarcoma genomes confirmed that the mutant RET proteins couple functional kinase activity to dysfunctional ligand binding. RET mutations further co-operated with alterations in TP53 and RB1, suggesting that osteosarcoma pathogenesis bears reminiscence to the stepwise model of medullary thyroid carcinoma. CONCLUSIONS: After Li-Fraumeni-predisposing mutations in TP53, RET becomes the second most mutated cancer-predisposing gene in the germline of patients with osteosarcoma. Hence, early identification of RET mutation carriers can help to identify at-risk family members and carry out preventive measures.


Assuntos
Carcinoma Neuroendócrino/genética , Osteossarcoma/genética , Proteínas Proto-Oncogênicas c-ret/genética , Proteínas de Ligação a Retinoblastoma/genética , Neoplasias da Glândula Tireoide/genética , Proteína Supressora de Tumor p53/genética , Ubiquitina-Proteína Ligases/genética , Adulto , Idoso , Carcinoma Neuroendócrino/complicações , Carcinoma Neuroendócrino/epidemiologia , Carcinoma Neuroendócrino/patologia , Feminino , Predisposição Genética para Doença , Mutação em Linhagem Germinativa/genética , Humanos , Masculino , Osteossarcoma/complicações , Osteossarcoma/epidemiologia , Osteossarcoma/patologia , Pediatria , Proto-Oncogene Mas , Neoplasias da Glândula Tireoide/complicações , Neoplasias da Glândula Tireoide/epidemiologia , Neoplasias da Glândula Tireoide/patologia
7.
J Genet Couns ; 31(1): 96-108, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-34218500

RESUMO

Genomic Sequencing (GS) to identify high cancer risk will soon enter clinical practice at significant cost to the health system. This study aimed to quantify perceived value of GS to Australian cancer patients and their first-degree relatives participating in a genomic sequencing study, and factors associated with value. Participants were recruited upon consent to the genomics study. Eligible participants (with cancer of likely genetic etiology, or a first-degree relative) completed a questionnaire prior to GS. Willingness to pay was assessed via hypothetical trade-off scenarios of actionable result return rates of 1%, 10%, 20%, 30%, 40% or 50%. Of 348 probands and 213 relatives (92% and 93% response rate), 81% would consistently have GS for as little as a 1% actionable return rate. Participants would pay a median of $1,000 for return rates of at least 20% (probands) or 30% (relatives), and $300 for lower return rates. Probands with common cancers and negative attitudes to uncertainty were more likely to have GS; those with higher education were more willing to pay $1,000 and $3,000 for lower return rates. This study found high interest in, but lower willingness to pay for GS in cancer patients and their first-degree relatives, possibly due to inability to pay. Further research is needed to improve our understanding of how individuals in different risk circumstances, trade-off the risks, harms, and benefits of GS.


Assuntos
Genômica , Neoplasias , Austrália , Humanos , Neoplasias/genética , Inquéritos e Questionários , Sequenciamento Completo do Genoma
8.
Psychooncology ; 30(11): 1920-1929, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34240516

RESUMO

INTRODUCTION: Fear of cancer progression (FCP) impacts quality of life and is a prevalent unmet need in patients diagnosed with advanced cancer, particularly as treatment options are reduced. We aimed to identify longitudinal patterns in FCP over 6 months in patients with advanced cancer receiving comprehensive tumour genomic profiling (CTGP) results, and their correlates. METHODS: Patients with pathologically confirmed metastatic disease (∼70% rare cancers) receiving or post their last line of standard therapy completed questionnaires at T0 (prior to CTGP), T1 (immediately post CTGP results) and T2 (2 months later). RESULTS: High stable (N = 52; 7.3%) and low/moderate stable (N = 56; 7.8%) FCP patterns over time typified the largest participant groups (N = 721). Those with an immediately actionable variant versus a non-actionable variant (p = 0.045), with higher FCP (p < 0.001), and lower Functional Assessment of Chronic Illness Therapy-Spiritual Well-being (FACIT-Sp) scores (p = 0.006) at T0, had higher FCP at T1. Those with higher FCP at T0 (p < 0.001) and at T1 (p < 0.001), lower FACIT-Sp scores at T1 (p = 0.001), lower education (p = 0.031) and female gender (p = 0.027) had higher FCP at T2. DISCUSSION: Routine screening for psychological/spiritual characteristics in those about to undergo CTGP may help to identify patients who may benefit from closer monitoring and provision of psychosocial support. Future studies should explore interventions to best address FCP in this vulnerable group, as interventions assessed to date have almost all addressed patients with curative cancers or newly diagnosed advanced disease.


Assuntos
Neoplasias , Qualidade de Vida , Medo , Feminino , Genômica , Humanos , Neoplasias/diagnóstico , Neoplasias/genética , Neoplasias/terapia , Inquéritos e Questionários
9.
Support Care Cancer ; 29(12): 7289-7297, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34036439

RESUMO

PURPOSE: Fear of cancer recurrence/occurrence (FCR/O) is prevalent and associated with poorer psychological outcomes but can also motivate individuals to pursue genomic information about cancer risk. Guided by Protection Motivation Theory, this study investigated FCR/O prevalence and associated factors among probands previously diagnosed with a cancer of likely heritable origin, and their relatives, who had agreed to have germline genome sequencing. METHODS: Three hundred and forty-eight probands and 167 relatives completed the Concerns about Recurrence Questionnaire (adapted for occurrence for some relatives) within 1 month of agreeing to undertake genome sequencing. Linear regressions investigated demographic, disease, attitude and behavioral associations with FCR/O. RESULTS: Probands demonstrated greater FCR compared to relatives. In probands, greater FCR was associated with being female, non-English speaking at home, less time since diagnosis, greater intention to change behavior if gene variant found, lower perceived ability to cope with results, higher perceived susceptibility to having a recurrence, and more negative attitudes towards uncertainty. For relatives with cancer, greater FCR was associated with being male, greater intention to change behavior if a gene variant found, and higher perceived susceptibility to recurrence. In relatives without cancer, greater FCO was associated with not having had genetic testing prior to this study, lower perceived ability to cope with results, and higher perceived susceptibility to developing cancer. CONCLUSION: Current findings on FCR/O prevalence and associated demographic and attitudinal variables in those who pursue genomic risk information might be used to target interventions that can prevent adverse psychological outcomes in vulnerable patients.


Assuntos
Recidiva Local de Neoplasia , Transtornos Fóbicos , Adaptação Psicológica , Medo , Feminino , Células Germinativas , Humanos , Masculino , Recidiva Local de Neoplasia/epidemiologia , Recidiva Local de Neoplasia/genética
10.
J Med Genet ; 57(10): 671-676, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-31980566

RESUMO

BACKGROUND: Little is known about knowledge of, and attitudes towards, genome sequencing (GS) among individuals with a personal history of cancer who decide to undergo GS. This qualitative study aimed to investigate baseline knowledge and attitudes among individuals previously diagnosed with a cancer of likely genetic origin who have consented to GS. METHODS: Semistructured interviews were conducted with purposively selected participants (n=20) from the longitudinal Psychosocial Issues in Genomic Oncology study, within a month of consenting to GS and prior to receiving any results. Participants were adults with a cancer of likely genetic aetiology who are undertaking GS as part of a larger genetic study. RESULTS: Analysis identified three main themes: limited understanding of genomics; multifactorial motivation; and complex decision making. While motivations such as obtaining health information about self and family appear to be the main drivers for undertaking GS, these motivations are sometimes based on limited knowledge of the accuracy and utility of GS, creating unrealistic expectations. This in turn can prolong the deliberation process and lead to ongoing decisional conflict. CONCLUSION: Understanding the degree and nature of patient understanding of GS, as well as their attitudes and decision-making processes, will enable healthcare professionals to better manage patient expectations and appropriately engage and support patients to make an informed decision when pursuing GS.


Assuntos
Genoma Humano/genética , Genômica , Neoplasias/epidemiologia , Adolescente , Adulto , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Entrevistas como Assunto , Masculino , Neoplasias/genética , Pacientes/psicologia , Pesquisa Qualitativa , Sequenciamento Completo do Genoma/tendências , Adulto Jovem
11.
J Genet Couns ; 30(3): 849-860, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33470033

RESUMO

Polygenic risk scores (PRS) are personalized assessments of disease risk based on the cumulative effect of common low-risk genetic variants. PRS have been shown to accurately predict women's breast cancer risk and are likely to be incorporated into personalized breast cancer risk management programs. However, there are few studies investigating the individual impact of receiving a breast cancer PRS. Existing studies have not demonstrated significant changes in perceived risk or risk management behaviors after receipt of polygenic risk information. The aim of this qualitative study was to explore how women with a family history of breast cancer construct breast cancer risk perceptions after receipt of a breast cancer PRS. Unaffected women with a family history of breast cancer who had not previously received genetic counseling regarding their breast cancer risk were invited to participate in this study. In-depth, semi-structured interviews were conducted with 20 women who attended a familial cancer clinic in the Australian states of Victoria and Tasmania. Data were analyzed using an inductive thematic approach. Women's lived experience played a significant role in the construction and maintenance of their breast cancer risk perception. Women's pre-existing risk perceptions were informed by their family history and their knowledge that breast cancer is a multifactorial disease. Knowing that breast cancer is a multifactorial disease enabled most women to integrate genetic information with their pre-existing notions of risk. Women reported that the information they received was consistent with their existing notions of personal risk and screening advice. Therefore, the PRS did not lead to a change in perceived risk or risk management behaviors for most women. The results of this study provide insight into how polygenic risk information is integrated with pre-existing notions of risk, which will inform its implementation into clinical practice.


Assuntos
Neoplasias da Mama , Austrália , Neoplasias da Mama/genética , Feminino , Predisposição Genética para Doença , Humanos , Percepção , Fatores de Risco
12.
Clin Genet ; 97(2): 329-337, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31674008

RESUMO

Implementation of any new medical test, including germline genome sequencing (GS) to inform cancer risk, should take place only when a test is effective, ethically justifiable and acceptable to a population. Little empirical evidence exists on patient views regarding GS for cancer risk. The aim of this study was to elicit opinions on who should be offered GS and who should pay for it. Participants with a probable genetic basis for their cancer (n = 335) and blood relatives (n = 199) were recruited to undergo GS and invited to complete questionnaires at baseline. A subset (n = 40) also participated in qualitative interviews about their views regarding access to GS to detect cancer risk. Our response rate was 92% for questionnaires and 100% for interviews. Participants expressed high enthusiasm overall for access to GS for those with a family history of cancer and anyone who requested testing, but enthusiasm was lower for universal access, if opting out was possible and finances not an issue. Rationales for these views reflected maximising the sound use of resources. Challenges to introducing community screening via GS to limit cancer burden were raised, including the current limits of science and individual ability to cope with uncertain results. Participants undergoing GS supported cancer risk testing for those with a family history of cancer but were concerned about the challenges of designing and implementing a population-based GS cancer-screening program.


Assuntos
Detecção Precoce de Câncer/ética , Neoplasias/genética , Sequenciamento Completo do Genoma/ética , Adolescente , Adulto , Criança , Pré-Escolar , Família/psicologia , Feminino , Células Germinativas/patologia , Humanos , Lactente , Recém-Nascido , Masculino , Neoplasias/diagnóstico , Pacientes/psicologia , Inquéritos e Questionários , Sequenciamento Completo do Genoma/tendências , Adulto Jovem
13.
Genes Chromosomes Cancer ; 58(2): 130-136, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30382615

RESUMO

Sarcomas have a strong genetic etiology, and the study of families affected by sarcomas has informed much of what we now understand of modern cancer biology. The recent emergence of powerful genetic technologies has led to astonishing reductions in costs and increased throughput. In the clinic, these technologies are revealing a previously unappreciated and rich landscape of genetic cancer risk. In addition to both known and new cancer risk mutations, genomic tools are cataloguing complex and polygenic risk patterns, collectively explaining between 15-25% of apparently sporadic sarcoma cases. The impact on clinical management is exemplified by Li-Fraumeni Syndrome, the most penetrant sarcoma syndrome. Whole body magnetic resonance imaging can identify surgically resectable cancers in up to one in ten individuals with Li-Fraumeni Syndrome. Taken together, parallel developments in genomics, therapeutics and imaging technologies will drive closer engagement between genetics and multidisciplinary care of the sarcoma patient in the 21st century.


Assuntos
Biomarcadores Tumorais/genética , Detecção Precoce de Câncer/métodos , Predisposição Genética para Doença , Sarcoma/genética , Humanos , Sarcoma/patologia
14.
Hum Mutat ; 40(6): 788-800, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30840781

RESUMO

Germline pathogenic variants in the TP53 gene cause Li-Fraumeni syndrome, a condition that predisposes individuals to a wide range of cancer types. Identification of individuals carrying a TP53 pathogenic variant is linked to clinical management decisions, such as the avoidance of radiotherapy and use of high-intensity screening programs. The aim of this study was to develop an evidence-based quantitative model that integrates independent in silico data (Align-GVGD and BayesDel) and somatic to germline ratio (SGR), to assign pathogenicity to every possible missense variant in the TP53 gene. To do this, a likelihood ratio for pathogenicity (LR) was derived from each component calibrated using reference sets of assumed pathogenic and benign missense variants. A posterior probability of pathogenicity was generated by combining LRs, and algorithm outputs were validated using different approaches. A total of 730 TP53 missense variants could be assigned to a clinically interpretable class. The outputs of the model correlated well with existing clinical information, functional data, and ClinVar classifications. In conclusion, these quantitative outputs provide the basis for individualized assessment of cancer risk useful for clinical interpretation. In addition, we propose the value of the novel SGR approach for use within the ACMG/AMP guidelines for variant classification.


Assuntos
Biologia Computacional/métodos , Síndrome de Li-Fraumeni/genética , Mutação de Sentido Incorreto , Proteína Supressora de Tumor p53/genética , Algoritmos , Simulação por Computador , Predisposição Genética para Doença , Humanos , Modelos Genéticos
15.
BMC Med Genet ; 20(1): 69, 2019 05 03.
Artigo em Inglês | MEDLINE | ID: mdl-31053105

RESUMO

BACKGROUND: Although familial clustering of cancers is relatively common, only a small proportion of familial cancer risk can be explained by known cancer predisposition genes. METHODS: In this study we employed a two-stage approach to identify candidate sarcoma risk genes. First, we conducted whole exome sequencing in three multigenerational cancer families ascertained through a sarcoma proband (n = 19) in order to prioritize candidate genes for validation in an independent case-control cohort of sarcoma patients using family-based association and segregation analysis. The second stage employed a burden analysis of rare variants within prioritized candidate genes identified from stage one in 560 sarcoma cases and 1144 healthy ageing controls, for which whole genome sequence was available. RESULTS: Variants from eight genes were identified in stage one. Following gene-based burden testing and after correction for multiple testing, two of these genes, ABCB5 and C16orf96, were determined to show statistically significant association with cancer. The ABCB5 gene was found to have a higher burden of putative regulatory variants (OR = 4.9, p-value = 0.007, q-value = 0.04) based on allele counts in sarcoma cases compared to controls. C16orf96, was found to have a significantly lower burden (OR = 0.58, p-value = 0.0004, q-value = 0.003) of regulatory variants in controls compared to sarcoma cases. CONCLUSIONS: Based on these genetic association data we propose that ABCB5 and C16orf96 are novel candidate risk genes for sarcoma. Although neither of these two genes have been previously associated with sarcoma, ABCB5 has been shown to share clinical drug resistance associations with melanoma and leukaemia and C16orf96 shares regulatory elements with genes that are involved with TNF-alpha mediated apoptosis in a p53/TP53-dependent manner. Future genetic studies in other family and population cohorts will be required for further validation of these novel findings.


Assuntos
Predisposição Genética para Doença , Sarcoma/genética , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Alelos , Estudos de Coortes , DNA/genética , Feminino , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Masculino , Pessoa de Meia-Idade , Linhagem , Adulto Jovem
16.
Int J Cancer ; 142(8): 1594-1601, 2018 04 15.
Artigo em Inglês | MEDLINE | ID: mdl-29210060

RESUMO

Survival rates for osteosarcoma, the most common primary bone cancer, have changed little over the past three decades and are particularly low for patients with metastatic disease. We conducted a multi-institutional genome-wide association study (GWAS) to identify germline genetic variants associated with overall survival in 632 patients with osteosarcoma, including 523 patients of European ancestry and 109 from Brazil. We conducted a time-to-event analysis and estimated hazard ratios (HR) and 95% confidence intervals (CI) using Cox proportional hazards models, with and without adjustment for metastatic disease. The results were combined across the European and Brazilian case sets using a random-effects meta-analysis. The strongest association after meta-analysis was for rs3765555 at 9p24.1, which was inversely associated with overall survival (HR = 1.76; 95% CI 1.41-2.18, p = 4.84 × 10-7 ). After imputation across this region, the combined analysis identified two SNPs that reached genome-wide significance. The strongest single association was with rs55933544 (HR = 1.9; 95% CI 1.5-2.4; p = 1.3 × 10-8 ), which localizes to the GLDC gene, adjacent to the IL33 gene and was consistent across both the European and Brazilian case sets. Using publicly available data, the risk allele was associated with lower expression of IL33 and low expression of IL33 was associated with poor survival in an independent set of patients with osteosarcoma. In conclusion, we have identified the GLDC/IL33 locus on chromosome 9p24.1 as associated with overall survival in patients with osteosarcoma. Further studies are needed to confirm this association and shed light on the biological underpinnings of this susceptibility locus.


Assuntos
Neoplasias Ósseas/genética , Neoplasias Ósseas/mortalidade , Interleucina-33/genética , Osteossarcoma/genética , Osteossarcoma/mortalidade , Adulto , Alelos , Brasil , Feminino , Predisposição Genética para Doença/genética , Estudo de Associação Genômica Ampla/métodos , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único/genética , Modelos de Riscos Proporcionais , Taxa de Sobrevida , População Branca/genética
18.
BMC Cancer ; 18(1): 389, 2018 04 05.
Artigo em Inglês | MEDLINE | ID: mdl-29621994

RESUMO

BACKGROUND: Genomic sequencing in cancer (both tumour and germline), and development of therapies targeted to tumour genetic status, hold great promise for improvement of patient outcomes. However, the imminent introduction of genomics into clinical practice calls for better understanding of how patients value, experience, and cope with this novel technology and its often complex results. Here we describe a protocol for a novel mixed-methods, prospective study (PiGeOn) that aims to examine patients' psychosocial, cognitive, affective and behavioural responses to tumour genomic profiling and to integrate a parallel critical ethical analysis of returning results. METHODS: This is a cohort sub-study of a parent tumour genomic profiling programme enrolling patients with advanced cancer. One thousand patients will be recruited for the parent study in Sydney, Australia from 2016 to 2019. They will be asked to complete surveys at baseline, three, and five months. Primary outcomes are: knowledge, preferences, attitudes and values. A purposively sampled subset of patients will be asked to participate in three semi-structured interviews (at each time point) to provide deeper data interpretation. Relevant ethical themes will be critically analysed to iteratively develop or refine normative ethical concepts or frameworks currently used in the return of genetic information. DISCUSSION: This will be the first Australian study to collect longitudinal data on cancer patients' experience of tumour genomic profiling. Findings will be used to inform ongoing ethical debates on issues such as how to effectively obtain informed consent for genomic profiling return results, distinguish between research and clinical practice and manage patient expectations. The combination of quantitative and qualitative methods will provide comprehensive and critical data on how patients cope with 'actionable' and 'non-actionable' results. This information is needed to ensure that when tumour genomic profiling becomes part of routine clinical care, ethical considerations are embedded, and patients are adequately prepared and supported during and after receiving results. TRIAL REGISTRATION: Not required for this sub-study, parent trial registration ACTRN12616000908437 .


Assuntos
Protocolos Clínicos , Neoplasias/epidemiologia , Adaptação Psicológica , Temas Bioéticos , Feminino , Genômica/métodos , Comportamentos Relacionados com a Saúde , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Neoplasias/genética , Neoplasias/psicologia , Projetos de Pesquisa
19.
BMC Cancer ; 18(1): 454, 2018 04 23.
Artigo em Inglês | MEDLINE | ID: mdl-29685123

RESUMO

BACKGROUND: Advances in genomics offer promise for earlier detection or prevention of cancer, by personalisation of medical care tailored to an individual's genomic risk status. However genome sequencing can generate an unprecedented volume of results for the patient to process with potential implications for their families and reproductive choices. This paper describes a protocol for a study (PiGeOn) that aims to explore how patients and their blood relatives experience germline genomic sequencing, to help guide the appropriate future implementation of genome sequencing into routine clinical practice. METHODS: We have designed a mixed-methods, prospective, cohort sub-study of a germline genomic sequencing study that targets adults with cancer suggestive of a genetic aetiology. One thousand probands and 2000 of their blood relatives will undergo germline genomic sequencing as part of the parent study in Sydney, Australia between 2016 and 2020. Test results are expected within12-15 months of recruitment. For the PiGeOn sub-study, participants will be invited to complete surveys at baseline, three months and twelve months after baseline using self-administered questionnaires, to assess the experience of long waits for results (despite being informed that results may not be returned) and expectations of receiving them. Subsets of both probands and blood relatives will be purposively sampled and invited to participate in three semi-structured qualitative interviews (at baseline and each follow-up) to triangulate the data. Ethical themes identified in the data will be used to inform critical revisions of normative ethical concepts or frameworks. DISCUSSION: This will be one of the first studies internationally to follow the psychosocial impact on probands and their blood relatives who undergo germline genome sequencing, over time. Study results will inform ongoing ethical debates on issues such as informed consent for genomic sequencing, and informing participants and their relatives of specific results. The study will also provide important outcome data concerning the psychological impact of prolonged waiting for germline genomic sequencing. These data are needed to ensure that when germline genomic sequencing is introduced into standard clinical settings, ethical concepts are embedded, and patients and their relatives are adequately prepared and supported during and after the testing process.


Assuntos
Protocolos Clínicos , Genômica , Células Germinativas/metabolismo , Neoplasias/genética , Neoplasias/psicologia , Sequenciamento Completo do Genoma , Ansiedade , Austrália/epidemiologia , Depressão , Suscetibilidade a Doenças , Família , Medo , Genômica/ética , Genômica/métodos , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Estudos Longitudinais , Neoplasias/epidemiologia , Percepção , Inquéritos e Questionários
20.
J Genet Couns ; 27(5): 1055-1066, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-29455319

RESUMO

Germline genomic testing is increasingly used in research to identify genetic causes of disease, including cancer. However, there is evidence that individuals who are notified of clinically actionable research findings have difficulty making informed decisions regarding uptake of genetic counseling for these findings. This study aimed to produce and pilot test a decision aid to assist participants in genomic research studies who are notified of clinically actionable research findings to make informed choices regarding uptake of genetic counseling. Development was guided by published literature, the International Patient Decision Aid Standards, and the expertise of a steering committee of clinicians, researchers, and consumers. Decision aid acceptability was assessed by self-report questionnaire. All 19 participants stated that the decision aid was easy to read, clearly presented, increased their understanding of the implications of taking up research findings, and would be helpful in decision-making. While low to moderate levels of distress/worry were reported after reading the booklet, a majority of participants also reported feeling reassured. All participants would recommend the booklet to others considering uptake of clinically actionable research findings. Results indicate the decision aid is acceptable to the target audience, with potential as a useful decision support tool for genomic research participants.


Assuntos
Técnicas de Apoio para a Decisão , Predisposição Genética para Doença , Testes Genéticos , Neoplasias/genética , Estresse Psicológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Aconselhamento Genético , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/psicologia , Participação do Paciente/psicologia , Projetos Piloto , Vitória
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA