Abstract：
:A clinical trial conducted according to a schedule of interim analyses written into the protocol, and stopped according to a predetermined rule, is known to statisticians as a sequential clinical trial. This methodology is becoming more widely used in trials concerning life-threatening diseases because of its ability to adjust the sample size to the emerging information on treatment efficacy. When treatments under comparison differ appreciably, small samples will be sufficient; for more subtle differences larger numbers of patients need to be recruited. Sequential methods have already been used in certain cancer clinical trials, and they are especially appropriate for such studies. In this paper the principles of sample size determination are reviewed, and the essential aspects of designing sequential trials are described. The necessity for a special form of statistical analysis following a sequential trial is explained, and the consequences of early or late stopping on the analysis are investigated. Compromises which have to be made between the formal requirements of theory and the practical realities of trial conduct are discussed.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Whitehead Jdoi
10.1038/bjc.1993.500subject
Has Abstractpub_date
1993-12-01 00:00:00pages
1179-85issue
6eissn
0007-0920issn
1532-1827journal_volume
68pub_type
杂志文章abstract：BACKGROUND:MiR-125b has critical role in non-small-cell lung cancer (NSCLC) cell migration, and its target genes have not been elucidated. Kinesin-1 light chain (KLC)-2 was predicted as one of miR-125b's targets by bioinformatics analysis. This study is to identify the function of KLC2 and its interaction with miR-125b...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2015.3
更新日期：2015-03-03 00:00:00
abstract：:The retinoblastoma gene product (RB) contributes to normal cell growth control. One of its functions is manifest as a block to exit from G1, which is carried out by an RB subspecies which is un- or underphosphorylated. After RB phosphorylation, a process which occurs towards the end of G1 in cycling cells, the block i...
journal_title：British journal of cancer
pub_type： 杂志文章,评审
doi：10.1038/bjc.1993.325
更新日期：1993-08-01 00:00:00
abstract：:Virus-directed enzyme prodrug therapy (VDEPT) utilising the bacterial enzyme nitroreductase delivered by a replication-defective adenovirus vector to activate the prodrug CB1954 is a promising strategy currently undergoing clinical trials in patients with a range of cancers. An understanding of the mechanism of tumour...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601211
更新日期：2003-09-01 00:00:00
abstract：:We previously demonstrated a characteristically high sensitivity of pancreatic cancer cells to interferon alpha (IFN-alpha) gene transfer, which induced a more prominent growth suppression and cell death in pancreatic cancer cells than in other types of cancers and normal cells. The IFN-alpha protein can exhibit both ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6602713
更新日期：2005-08-22 00:00:00
abstract：:Expression of the 37-kDa laminin binding protein (37LBP/p40), a precursor of the 67-kDa laminin receptor, is well-correlated with the biological aggressiveness of cancer cells. To elucidate the direct role played by 37LBP/p40 in cancer cells, a murine lung cancer cell line T11, the 37LBP/p40 expression of which was re...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6690474
更新日期：1999-06-01 00:00:00
abstract：:The purpose of this study was to investigate the effect of breast density on breast cancer (BC) mortality in a mammography screening programme. The cohort included 48 052 women participating in mammography screening in Copenhagen, Denmark, where biennial screening is offered to women aged 50-69 years. We collected inf...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6604989
更新日期：2009-04-07 00:00:00
abstract：:The effects of local tumour radiation over the dose range 7.5-30 Gy on the growth and cell kinetics of rat hepatoma H-4-II-E have been investigated. A plot of growth delays against log surviving fraction was linear below a fraction of 0.03, but failed to extrapolate to the origin. Following a single dose of 15 Gy to t...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1980.283
更新日期：1980-10-01 00:00:00
abstract：:To investigate whether parents of children with congenital malformations more often developed cancer after birth of the child, a population-based case-control study in Denmark was undertaken. By linking the Cancer Registry with the Central Population Registry, we identified 8783 cancer patients having their first chil...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6600488
更新日期：2002-08-27 00:00:00
abstract：BACKGROUND:Use of antibiotics could alter human microbiota composition and decrease bacterial diversity. Such microbial dysbiosis may have implications in hepatocarcinogenesis; however, the association between antibiotic use and liver cancer risk has been minimally examined in humans. METHODS:We performed a nested cas...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2016.148
更新日期：2016-06-28 00:00:00
abstract：:Kaposi's sarcoma (KS) is a highly vascular tumour and is the most common neoplasm associated with human immunodeficiency virus (HIV-1) infection. Growth factors, in particular vascular endothelial growth factor (VEGF), have been shown to play an important role in its development. The role of insulin-like growth factor...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6602408
更新日期：2005-04-25 00:00:00
abstract：:Elderly patients are recommended to have a reduced starting dose (300 mg m(-2) once every 3 weeks) of irinotecan monotherapy. The aims of this analysis are to compare toxicity and survival according to age, performance status (PS), gender and prior radical pelvic radiotherapy (RT). The primary end points were overall ...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章,多中心研究,随机对照试验
doi：10.1038/sj.bjc.6602169
更新日期：2004-10-18 00:00:00
abstract：:DT-diaphorase (DTD) is an important enzyme for the bioreductive activation of the new alkylating indoloquinone EO9. In preclinical studies, EO9 has shown selective anti-tumour activity against solid tumours and under hypoxic conditions. The levels of three reductive enzymes have been determined in three types of human...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1995.433
更新日期：1995-10-01 00:00:00
abstract：:Photodynamic diagnosis and therapy have emerged as a promising tool in oncology. Using the visible fluorescence from photosensitisers excited by light, clinicians can both identify and treat tumour cells in situ. Protoporphyrin IX, produced in the penultimate step of the haem synthesis pathway, is a naturally occurrin...
journal_title：British journal of cancer
pub_type： 杂志文章,评审
doi：10.1038/s41416-019-0516-4
更新日期：2019-10-01 00:00:00
abstract：BACKGROUND:Several microRNA (miRNA) molecules have emerged as important post-transcriptional regulators of tumour suppressor and oncogene expression. Ras association domain family member 1 (RASSF1) is a critical tumour suppressor that controls multiple aspects of cell proliferation such as cell cycle, cell division and...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2017.110
更新日期：2017-05-23 00:00:00
abstract：:This paper illustrates the efficacy of DNA vaccination through electroporation in the prevention of oral transplantable carcinoma in Syrian hamsters. At 21 and 7 days before tumour challenge, 19 hamsters were vaccinated with plasmids coding for the extracellular and transmembrane domains of rat HER-2 receptor (EC-TM p...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6602853
更新日期：2005-11-28 00:00:00
abstract：:A number of rare human inherited syndromes are associated with apparent defects in DNA repair and a greatly increased frequency of cancer. Cell lines derived from such individuals phenotypically resemble certain bacterial mutant strains that have increased sensitivity to radiation or chemical agents and well character...
journal_title：British journal of cancer
pub_type： 杂志文章,评审
doi：10.1038/bjc.1987.163
更新日期：1987-08-01 00:00:00
abstract：:Women with gross cystic breast disease may have an increased risk of breast cancer. In this study the ability of breast cyst fluid (BCF), obtained from British or Hungarian women, to modulate oestrone sulphate (E1S) formation or hydrolysis, has been examined. For this, oestrogen receptor-positive (ER+) MCF-7 or MDA-MB...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1054/bjoc.1999.0948
更新日期：2000-01-01 00:00:00
abstract：BACKGROUND:We evaluated systemic immune-inflammation index (SII) and its association with patient outcome in germ-cell tumours (GCTs). METHODS:Two independent cohorts of patients were analysed; the discovery set (n=171) from a single institution and the validation set (n=181) previously included in a study evaluating ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2017.460
更新日期：2018-03-20 00:00:00
abstract：BACKGROUND:MicroRNA (miRNA)-126 (miR-126) is an endothelial-specific miRNA located within intron 7 of epidermal growth factor-like domain 7 (EGFL7). However, the role of miR-126 in cancer is controversial. METHODS:We examined the function of miR-126 in oral squamous cell carcinoma (OSCC) cells. Furthermore, a series o...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2012.330
更新日期：2012-08-07 00:00:00
abstract：:Testicular germ cell tumour (GCT) is not an AIDS-defining illness despite an increased incidence in men with HIV infection. We performed a matched case-control study comparing outcomes in HIV-positive men and the general population with GCT, using three age and stage matched controls for each case. There was no differ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601762
更新日期：2004-04-19 00:00:00
abstract：:Since hyperinsulinaemia may promote obesity-linked cancers, we compared type 2 diabetes prevalence among oesophageal adenocarcinoma (OAC) patients and population controls. Diabetes increased the risk of OAC (adjusted odds ratio 1.59, 95% confidence interval (CI) 1.04-2.43), although the risk was attenuated after furth...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6604908
更新日期：2009-03-10 00:00:00
abstract：:The RNASEL gene on chromosome 1q25 has been identified as a prostate cancer susceptibility gene. We screened for RNASEL germline mutations in familial prostate cancer patients, and performed a case-control study to examine the association of specific variants with prostate cancer risk in the Japanese. Three variants w...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601075
更新日期：2003-08-18 00:00:00
abstract：:While statins have been highly effective for lowering serum cholesterol and reducing the incidence of coronary events, they have multiple other effects. Certain statins block the interaction of adhesion molecules that are important for cell-cell interactions including those between EBV-transformed B cells. These same ...
journal_title：British journal of cancer
pub_type： 杂志文章,评审
doi：10.1038/sj.bjc.6602561
更新日期：2005-05-09 00:00:00
abstract：:To find out whether ultrasound-guided fine-needle aspiration (FNA) and ultrasound and stereotactic-guided large core needle biopsy (LCNB) are reliable alternatives to needle-localised open breast biopsy (NLBB) in daily practice, we performed a retrospective study and evaluated the validity of these methods. In all, 71...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章
doi：10.1038/sj.bjc.6601559
更新日期：2004-02-09 00:00:00
abstract：:Teratomas have been induced in Japanese quail (Coturnix coturnix Japonica) by intra-testicular injections of 3% zinc chloride solution during a period of testicular growth artificially stimulated by increased photoperiod. These tumours resemble those previously induced by similar methods in domestic fow1 and have hist...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1971.40
更新日期：1971-06-01 00:00:00
abstract：:A case-control study from Uganda found that the risk of Kaposi's sarcoma increased with increasing titre of antibodies against Kaposi's sarcoma-associated herpesvirus (KSHV) latent nuclear antigens, independently of HIV infection. Clinically, widespread Kaposi's sarcoma was more frequent among patients with HIV infect...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601113
更新日期：2003-08-04 00:00:00
abstract：:KRN 8602 (MX2) is a novel morpholino anthracycline derivative having the chemical structure 3'-deamino-3'-morpholino-13-deoxo-10-hydroxycarminomycin hydrochloride. To investigate the mechanisms of resistance to MX2, we established an MX2-resistant phenotype (K562/MX2) of the human myelogeneous leukaemia cell line (K56...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6602498
更新日期：2005-04-25 00:00:00
abstract：BACKGROUND:The randomised phase III TURANDOT trial compared first-line bevacizumab-paclitaxel (BEV-PAC) vs bevacizumab-capecitabine (BEV-CAP) in HER2-negative locally recurrent/metastatic breast cancer (LR/mBC). The interim analysis revealed no difference in overall survival (OS; primary end point) between treatment ar...
journal_title：British journal of cancer
pub_type： 杂志文章,随机对照试验
doi：10.1038/bjc.2014.504
更新日期：2014-11-25 00:00:00
abstract：:The expression of peroxisome proliferator-activated receptor (PPAR)gamma in thyroid neoplasias and in normal thyroid (NT) tissues has not been fully investigated. The objectives of the present work were: to study and compare the relative expression of PPARgamma in normal, benign and malignant thyroid tissues and to co...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601989
更新日期：2004-08-16 00:00:00
abstract：:Phorbol-12-myristate-13-acetate (PMA) induces p21WAF-1 expression in human myeloid leukaemic HL-60 cells. We show that this induction is specifically mediated by protein kinase C (PKC). In addition, the PKC inhibitor Ro 31-8220 with predominant PKC-alpha isoform specificity almost completely inhibited PMA-induced up-r...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1997.595
更新日期：1997-01-01 00:00:00
