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1.
Article in English | MEDLINE | ID: mdl-38537767

ABSTRACT

BACKGROUND: Computer simulation has indicated a significant effect of scapulothoracic orientation and posture on range of motion (ROM) after reverse total shoulder arthroplasty (RTSA). We analyzed this putative effect on the clinical and radiological outcome post-RTSA. METHODS: We retrospectively assessed 2-year follow-up data of RTSA patients treated at our clinic between 2008 and 2019. Patients were categorized into posture types A, B, and C based on an established method using scapular internal rotation on preoperative cross-sectional imaging. We compared differences in clinical ROM, pain, Subjective Shoulder Value, Constant Score, Shoulder Pain and Disability Index (SPADI), quality of life (EQ5D5L utility index) and radiological outcomes between posture types using linear regression analyses. RESULTS: Of 681 included patients, 225 had type A posture, 326 type B and 130 type C. Baseline group characteristics were comparable, although the type C group had a higher proportion of females (60% [A]; 64% [B]; 80% [C]) with lower abduction strength (0.7 kg [A]; 0.6 kg [B]; 0.3 kg [C]) and a slightly higher proportion with a Grammont design RTSA (41% [A]; 48% [B]; 54% [C]). There were significant adjusted differences in mean (±standard deviation) active flexion (A: 137±21°; B: 136±20°; C: 131±19°) and passive flexion (A: 140±19°; B: 138±19°; C: 134±18°), active (A: 127±26°; B: 125±26°; C: 117±27°) and passive abduction (A: 129±24°; B: 128±25°; C: 121±25°), SPADI (A: 81±18; B: 79±20; C: 73±23) and pain (A: 1.2±1.7; B: 1.6±2.2; C: 1.8±2.4) between posture types at 2 years (p≤0.035). A higher distalization shoulder angle was associated with better abduction in type C patients (p=0.016). Type C patients showed a trend towards a higher complication rate (3.9% vs 1.1% [A]; 3.2% [B]) (p=0.067). CONCLUSIONS: Type C posture influences the 2-year clinical outcome of RTSA patients in terms of worse flexion, abduction, SPADI and pain. Scapulothoracic orientation and posture should be considered during the patient selection process, preoperative planning and implantation of a RTSA.

2.
Mol Biol Evol ; 41(3)2024 Mar 01.
Article in English | MEDLINE | ID: mdl-38306580

ABSTRACT

Although both are salient features of genomes, at first glance ribosomal DNAs and transposable elements are genetic elements with not much in common: whereas ribosomal DNAs are mainly viewed as housekeeping genes that uphold all prime genome functions, transposable elements are generally portrayed as selfish and disruptive. These opposing characteristics are also mirrored in other attributes: organization in tandem (ribosomal DNAs) versus organization in a dispersed manner (transposable elements); evolution in a concerted manner (ribosomal DNAs) versus evolution by diversification (transposable elements); and activity that prolongs genomic stability (ribosomal DNAs) versus activity that shortens it (transposable elements). Re-visiting relevant instances in which ribosomal DNA-transposable element interactions have been reported, we note that both repeat types share at least four structural and functional hallmarks: (1) they are repetitive DNAs that shape genomes in evolutionary timescales, (2) they exchange structural motifs and can enter co-evolution processes, (3) they are tightly controlled genomic stress sensors playing key roles in senescence/aging, and (4) they share common epigenetic marks such as DNA methylation and histone modification. Here, we give an overview of the structural, functional, and evolutionary characteristics of both ribosomal DNAs and transposable elements, discuss their roles and interactions, and highlight trends and future directions as we move forward in understanding ribosomal DNA-transposable element associations.


Subject(s)
DNA Transposable Elements , Genomics , DNA, Ribosomal , DNA Methylation , Cytogenetic Analysis , Evolution, Molecular
3.
Microbiol Spectr ; 12(3): e0275623, 2024 Mar 05.
Article in English | MEDLINE | ID: mdl-38345391

ABSTRACT

For effective infection control measures for Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG), a reliable tool for screening and diagnosis is essential. Here, we aimed to establish and validate a multiplex PCR assay on an automated system using a dual-target approach for the detection of CT/NG and differentiation between lymphogranuloma venereum (LGV) and non-LGV from genital and extra-genital specimens. Published primer/probe sets (CT: pmpH, cryptic plasmid; NG: porA, opa) were modified for the cobas 5800/6800/8800. Standards quantified by digital PCR were used to determine linearity and lower limit of detection (LLoD; eSwab, urine). For clinical validation, prospective samples (n = 319) were compared with a CE-marked in vitro diagnostics (CE-IVD) assay. LLoDs ranged from 21.8 to 244 digital copies (dcp)/mL and 10.8 to 277 dcp/mL in swab and urine, respectively. A simple linear regression analysis yielded slopes ranging from -4.338 to -2.834 and Pearson correlation coefficients from 0.956 to 0.994. Inter- and intra-run variability was <0.5 and <1 cycle threshold (ct), respectively. No cross-reactivity was observed (n = 42). Clinical validation showed a sensitivity of 94.74% (95% confidence interval (CI): 87.23%-97.93%) and 95.51% (95% CI: 89.01%-98.24%), a specificity of 99.59% (95% CI: 97.71%-99.98%) and 99.57% (95% CI: 97.58%-99.98%), positive predictive values of 89.91% (estimated prevalence: 3.7%; 95% CI: 80.91%-95.6%) and 88.61% (estimated prevalence: 3.4%; 95% CI: 80.18%-94.34%), and negative predictive values of 99.81% (95% CI: 98.14%-100%) and 99.85% (95% CI: 98.14%-100%) for the detection of CT and NG, respectively. In conclusion, we established a dual-target, internally controlled PCR on an automated system for the detectiwon of CT/NG from genital and extra-genital specimens. Depending on local regulations, the assay can be used as a screening or a confirmatory/typing assay.IMPORTANCEChlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) represent a major global health burden, with the World Health Organization estimating that >128 million and >82 million people, respectively, were newly infected in 2020. For effective infection control measures, a reliable tool for sensitive diagnosis and screening of CT/NG is essential. We established a multiplex PCR assay for the detection of CT/NG and simultaneous discrimination between lymphogranuloma venereum (LGV) and non-LGV strains, which has been validated for genital and extra-genital specimens on a fully automated system. To increase assay sensitivity, a dual-target approach has been chosen for both pathogens. This strategy reduces false-positive results in oropharyngeal swabs due to the detection of commensal N. species that may harbor NG DNA fragments targeted in the PCR due to horizontal gene transmission following previous infection. In sum, the established assay provides a powerful tool for use as either a screening/diagnostic or a typing/confirmatory assay.


Subject(s)
Gonorrhea , Lymphogranuloma Venereum , Humans , Lymphogranuloma Venereum/diagnosis , Neisseria gonorrhoeae/genetics , Chlamydia trachomatis/genetics , Multiplex Polymerase Chain Reaction , Serotyping , Prospective Studies , Gonorrhea/diagnosis , Sensitivity and Specificity
4.
Methods Mol Biol ; 2672: 151-162, 2023.
Article in English | MEDLINE | ID: mdl-37335474

ABSTRACT

The quality of chromosome preparation influences all downstream analyses and is therefore crucial. Hence, numerous protocols exist to produce microscopic slides with mitotic chromosomes. Nevertheless, due to the high content of fibers in and around a plant cell, preparation of plant chromosomes is still far from trivial and needs to be fine-tuned for each species and tissue type. Here, we outline the "dropping method," a straightforward and efficient protocol to prepare multiple slides with uniform quality from a single chromosome preparation. In this method, nuclei are extracted and cleaned to produce a nuclei suspension. In a drop-by-drop manner, this suspension is then applied from a certain height onto the slides, causing the nuclei to rupture and the chromosomes to spread. Due to the physical forces that accompany the dropping and spreading process, this method is best suited for species with small- to medium-sized chromosomes.


Subject(s)
Cell Nucleus , Chromosomes , Chromosomes/genetics , Chromosomes, Plant/genetics , Metaphase
5.
BMC Bioinformatics ; 23(1): 40, 2022 Jan 14.
Article in English | MEDLINE | ID: mdl-35030991

ABSTRACT

BACKGROUND: Extrachromosomal circular DNAs (eccDNAs) are ring-like DNA structures physically separated from the chromosomes with 100 bp to several megabasepairs in size. Apart from carrying tandemly repeated DNA, eccDNAs may also harbor extra copies of genes or recently activated transposable elements. As eccDNAs occur in all eukaryotes investigated so far and likely play roles in stress, cancer, and aging, they have been prime targets in recent research-with their investigation limited by the scarcity of computational tools. RESULTS: Here, we present the ECCsplorer, a bioinformatics pipeline to detect eccDNAs in any kind of organism or tissue using next-generation sequencing techniques. Following Illumina-sequencing of amplified circular DNA (circSeq), the ECCsplorer enables an easy and automated discovery of eccDNA candidates. The data analysis encompasses two major procedures: first, read mapping to the reference genome allows the detection of informative read distributions including high coverage, discordant mapping, and split reads. Second, reference-free comparison of read clusters from amplified eccDNA against control sample data reveals specifically enriched DNA circles. Both software parts can be run separately or jointly, depending on the individual aim or data availability. To illustrate the wide applicability of our approach, we analyzed semi-artificial and published circSeq data from the model organisms Homo sapiens and Arabidopsis thaliana, and generated circSeq reads from the non-model crop plant Beta vulgaris. We clearly identified eccDNA candidates from all datasets, with and without reference genomes. The ECCsplorer pipeline specifically detected mitochondrial mini-circles and retrotransposon activation, showcasing the ECCsplorer's sensitivity and specificity. CONCLUSION: The ECCsplorer (available online at https://github.com/crimBubble/ECCsplorer ) is a bioinformatics pipeline to detect eccDNAs in any kind of organism or tissue using next-generation sequencing data. The derived eccDNA targets are valuable for a wide range of downstream investigations-from analysis of cancer-related eccDNAs over organelle genomics to identification of active transposable elements.


Subject(s)
DNA, Circular , DNA , Chromosomes , Cytoplasm , DNA/genetics , DNA, Circular/genetics , High-Throughput Nucleotide Sequencing , Humans
6.
Front Genet ; 12: 683668, 2021.
Article in English | MEDLINE | ID: mdl-34322154

ABSTRACT

In eukaryotic genomes, cycles of repeat expansion and removal lead to large-scale genomic changes and propel organisms forward in evolution. However, in conifers, active repeat removal is thought to be limited, leading to expansions of their genomes, mostly exceeding 10 giga base pairs. As a result, conifer genomes are largely littered with fragmented and decayed repeats. Here, we aim to investigate how the repeat landscapes of two related conifers have diverged, given the conifers' accumulative genome evolution mode. For this, we applied low-coverage sequencing and read clustering to the genomes of European and Japanese larch, Larix decidua (Lamb.) Carrière and Larix kaempferi (Mill.), that arose from a common ancestor, but are now geographically isolated. We found that both Larix species harbored largely similar repeat landscapes, especially regarding the transposable element content. To pin down possible genomic changes, we focused on the repeat class with the fastest sequence turnover: satellite DNAs (satDNAs). Using comparative bioinformatics, Southern, and fluorescent in situ hybridization, we reveal the satDNAs' organizational patterns, their abundances, and chromosomal locations. Four out of the five identified satDNAs are widespread in the Larix genus, with two even present in the more distantly related Pseudotsuga and Abies genera. Unexpectedly, the EulaSat3 family was restricted to L. decidua and absent from L. kaempferi, indicating its evolutionarily young age. Taken together, our results exemplify how the accumulative genome evolution of conifers may limit the overall divergence of repeats after speciation, producing only few repeat-induced genomic novelties.

7.
Ann Bot ; 128(3): 281-299, 2021 08 26.
Article in English | MEDLINE | ID: mdl-33729490

ABSTRACT

BACKGROUND AND AIMS: Endogenous pararetroviruses (EPRVs) are widespread components of plant genomes that originated from episomal DNA viruses of the Caulimoviridae family. Due to fragmentation and rearrangements, most EPRVs have lost their ability to replicate through reverse transcription and to initiate viral infection. Similar to the closely related retrotransposons, extant EPRVs were retained and often amplified in plant genomes for several million years. Here, we characterize the complete genomic EPRV fraction of the crop sugar beet (Beta vulgaris, Amaranthaceae) to understand how they shaped the beet genome and to suggest explanations for their absent virulence. METHODS: Using next- and third-generation sequencing data and genome assembly, we reconstructed full-length in silico representatives for the three host-specific EPRVs (beetEPRVs) in the B. vulgaris genome. Focusing on the endogenous caulimovirid beetEPRV3, we investigated its chromosomal localization, abundance and distribution by fluorescent in situ and Southern hybridization. KEY RESULTS: Full-length beetEPRVs range between 7.5 and 10.7 kb in size, are heterogeneous in structure and sequence, and occupy about 0.3 % of the beet genome. Although all three beetEPRVs were assigned to the florendoviruses, they showed variably arranged protein-coding domains, different fragmentation, and preferences for diverse sequence contexts. We observed small RNAs that specifically target the individual beetEPRVs, indicating stringent epigenetic suppression. BeetEPRV3 sequences occur along all sugar beet chromosomes, preferentially in the vicinity of each other and are associated with heterochromatic, centromeric and intercalary satellite DNAs. BeetEPRV3 members also exist in genomes of related wild species, indicating an initial beetEPRV3 integration 13.4-7.2 million years ago. CONCLUSIONS: Our study in beet illustrates the variability of EPRV structure and sequence in a single host genome. Evidence of sequence fragmentation and epigenetic silencing implies possible plant strategies to cope with long-term persistence of EPRVs, including amplification, fixation in the heterochromatin, and containment of EPRV virulence.


Subject(s)
Beta vulgaris , Beta vulgaris/genetics , Centromere , Genome, Plant/genetics , Retroelements , Sugars
8.
Ann Bot ; 127(1): 91-109, 2021 01 01.
Article in English | MEDLINE | ID: mdl-33009553

ABSTRACT

BACKGROUND AND AIMS: Plant genomes contain many retrotransposons and their derivatives, which are subject to rapid sequence turnover. As non-autonomous retrotransposons do not encode any proteins, they experience reduced selective constraints leading to their diversification into multiple families, usually limited to a few closely related species. In contrast, the non-coding Cassandra terminal repeat retrotransposons in miniature (TRIMs) are widespread in many plants. Their hallmark is a conserved 5S rDNA-derived promoter in their long terminal repeats (LTRs). As sugar beet (Beta vulgaris) has a well-described LTR retrotransposon landscape, we aim to characterize TRIMs in beet and related genomes. METHODS: We identified Cassandra retrotransposons in the sugar beet reference genome and characterized their structural relationships. Genomic organization, chromosomal localization, and distribution of Cassandra-TRIMs across the Amaranthaceae were verified by Southern and fluorescent in situ hybridization. KEY RESULTS: All 638 Cassandra sequences in the sugar beet genome contain conserved LTRs and thus constitute a single family. Nevertheless, variable internal regions required a subdivision into two Cassandra subfamilies within B. vulgaris. The related Chenopodium quinoa harbours a third subfamily. These subfamilies vary in their distribution within Amaranthaceae genomes, their insertion times and the degree of silencing by small RNAs. Cassandra retrotransposons gave rise to many structural variants, such as solo LTRs or tandemly arranged Cassandra retrotransposons. These Cassandra derivatives point to an interplay of template switch and recombination processes - mechanisms that likely caused Cassandra's subfamily formation and diversification. CONCLUSIONS: We traced the evolution of Cassandra in the Amaranthaceae and detected a considerable variability within the short internal regions, whereas the LTRs are strongly conserved in sequence and length. Presumably these hallmarks make Cassandra a prime target for unequal recombination, resulting in the observed structural diversity, an example of the impact of LTR-mediated evolutionary mechanisms on the host genome.


Subject(s)
Amaranthaceae , Beta vulgaris , Evolution, Molecular , Genome, Plant , In Situ Hybridization, Fluorescence , Recombination, Genetic , Retroelements , Sugars , Terminal Repeat Sequences
9.
BMJ Open ; 10(11): e040591, 2020 11 26.
Article in English | MEDLINE | ID: mdl-33243805

ABSTRACT

PURPOSE: Clinical registries are essential for evaluation of surgical outcomes. The Schulthess Shoulder Arthroplasty Registry (SAR) was established in 2006 to evaluate safety, function, quality-of-life and patient satisfaction in patients undergoing shoulder arthroplasty. PARTICIPANTS: Adult patients undergoing anatomic or reverse shoulder joint replacement at the Schulthess Klinik, a high-volume, leading orthopaedic surgery centre in Zürich, Switzerland. FINDINGS TO DATE: Between March 2006 and December 2019, the registry covered 98% of eligible operations. Overall, 2332 patients were enrolled with a total of 2796 operations and 11 147 person-years of follow-up. Mean age at baseline was 71 (range: 20-95), 65% were women. Most common indication was rotator cuff tears with osteoarthritis (42%) and the mean preoperative Constant Score was 31 (±15). The most frequent arthroplasty type was reverse, increasing from 61% in 2006-2010 to 86% in 2015-2019. Functional recovery peaked at 12-month postoperatively and did not show a clinically relevant deterioration during the first ten follow-up years. Since its establishment, the registry was used to address multiple pertinent clinical and methodological questions. Primary focus was on comparing different implant configurations (eg, glenosphere diameter) and surgical techniques (eg, latissimus dorsi transfer) to maximise functional recovery. Additionally, the cohort contributed to the determination of the clinical relevance and validity of radiological monitoring of cortical bone resorption and scapular notching. Finally, SAR data helped to demonstrate that returning to sports was among key patient expectations after reverse shoulder arthroplasty. FUTURE PLANS: As first patients are approaching the 15 years follow-up landmark, the registry will continue providing essential data on long-term functional outcomes, implant stability, revision rates and aetiologies as well as patient satisfaction and quality-of-life. In addition to research and quality-control, the cohort data will be brought back to the patients by bolstering real-time clinical decision support.


Subject(s)
Arthroplasty, Replacement, Shoulder , Shoulder Joint , Aged , Female , Humans , Male , Middle Aged , Range of Motion, Articular , Registries , Retrospective Studies , Shoulder Joint/surgery , Switzerland , Treatment Outcome
10.
Plant J ; 103(1): 32-52, 2020 07.
Article in English | MEDLINE | ID: mdl-31981259

ABSTRACT

If two related plant species hybridize, their genomes may be combined and duplicated within a single nucleus, thereby forming an allotetraploid. How the emerging plant balances two co-evolved genomes is still a matter of ongoing research. Here, we focus on satellite DNA (satDNA), the fastest turn-over sequence class in eukaryotes, aiming to trace its emergence, amplification, and loss during plant speciation and allopolyploidization. As a model, we used Chenopodium quinoa Willd. (quinoa), an allopolyploid crop with 2n = 4x = 36 chromosomes. Quinoa originated by hybridization of an unknown female American Chenopodium diploid (AA genome) with an unknown male Old World diploid species (BB genome), dating back 3.3-6.3 million years. Applying short read clustering to quinoa (AABB), C. pallidicaule (AA), and C. suecicum (BB) whole genome shotgun sequences, we classified their repetitive fractions, and identified and characterized seven satDNA families, together with the 5S rDNA model repeat. We show unequal satDNA amplification (two families) and exclusive occurrence (four families) in the AA and BB diploids by read mapping as well as Southern, genomic, and fluorescent in situ hybridization. Whereas the satDNA distributions support C. suecicum as possible parental species, we were able to exclude C. pallidicaule as progenitor due to unique repeat profiles. Using quinoa long reads and scaffolds, we detected only limited evidence of intergenomic homogenization of satDNA after allopolyploidization, but were able to exclude dispersal of 5S rRNA genes between subgenomes. Our results exemplify the complex route of tandem repeat evolution through Chenopodium speciation and allopolyploidization, and may provide sequence targets for the identification of quinoa's progenitors.


Subject(s)
Chenopodium quinoa/genetics , DNA, Satellite/genetics , Genome, Plant/genetics , Tetraploidy , Chromosomes, Plant/genetics , Consensus Sequence/genetics , Hybridization, Genetic/genetics , Retroelements/genetics , Sequence Alignment , Tandem Repeat Sequences/genetics
11.
J Altern Complement Med ; 23(7): 534-540, 2017 Jul.
Article in English | MEDLINE | ID: mdl-28410446

ABSTRACT

OBJECTIVES: This study focused on patients with bipolar disorder (BD), several years after their participation in mindfulness-based cognitive therapy (MBCT). It aimed at documenting sustained mindfulness practice, perceived long-term benefit from the program, and changes regarded as direct consequences of the intervention. DESIGN: This cross-sectional survey took place at least 2 years after MBCT for 70.4% of participants. LOCATION: It was conducted in two specialized outpatient units for BDs that are part of the Geneva University Hospitals (Switzerland) and the Sainte-Anne Hospital in Paris (France). SUBJECTS: Eligibility criteria were a diagnosis of BD according to DSM-IV and participation in at least four MBCT sessions. Response rate was 66.4%. The final sample included 71 outpatients (71.8% bipolar I, 28.2% bipolar II). OUTCOME MEASURES: A questionnaire retrospectively assessed patient-perceived change, benefit from MBCT, and current mindfulness practice. RESULTS: Proportions of respondents who practiced mindfulness at least once a week were 54.9% for formal practice (body scan, sitting meditation, mindful walking, or movements) and 57.7% for informal practice (mindful daily activities). Perceived benefit for the prevention of relapse was moderate, but patients acknowledged long-lasting effects and persistent changes in their way of life. Formal mindfulness practice at least once a week tended to be associated with increased long-lasting effects (p = 0.052), whereas regular informal practice and mindful breathing were significantly associated with persistent changes in daily life (p = 0.038) and better prevention of depressive relapse (p = 0.035), respectively. The most frequently reported positive change was increased awareness of being able to improve one's health. CONCLUSIONS: Despite methodological limitations, this survey allowed documenting mindfulness practice and perceived sustained benefit from MBCT in patients with BD. Participants particularly valued increased awareness that they can influence their own health. Both informal and formal practices, when sustained in the long term, might promote long-lasting changes.


Subject(s)
Bipolar Disorder/psychology , Bipolar Disorder/therapy , Cognitive Behavioral Therapy/methods , Mindfulness/methods , Adult , Aged , Cross-Sectional Studies , Female , France , Humans , Male , Middle Aged , Secondary Prevention , Self Report , Surveys and Questionnaires , Switzerland , Treatment Outcome
12.
BMC Cancer ; 16: 573, 2016 08 02.
Article in English | MEDLINE | ID: mdl-27485461

ABSTRACT

BACKGROUND: HELLP syndrome is a combination of symptoms described as hemolysis, elevated liver enzymes and low platelets, that complicates 0.01-0.6 % of pregnancies. HELLP syndrome has been scarcely reported associated with partial moles, another rare complication of pregnancy. This manuscript describes the only reported case of HELLP syndrome associated with a complete invasive hydatiform mole. CASE PRESENTATION: We report a perimenopausal patient in prolonged remission from an uncommon high-risk invasive complete mole. The diagnosis was set in a context of early onset preeclampsia and HELLP syndrome. The development of life-threatening complications required primary hysterectomy. Postoperative hCG quickly returned to normal with EMA/CO multi-agent chemotherapy. CONCLUSION: Our patient is in prolonged remission from a complete mole complicated with EOP and HELLP syndrome. This exceptional case of complicated gestational trophoblastic neoplasia reflects a very rare condition in which several risk factors for placental ischemia are associated. Emergency hysterectomy should be considered as salvage initial treatment in such life-threatening situations.


Subject(s)
Gestational Trophoblastic Disease/diagnostic imaging , HELLP Syndrome/diagnostic imaging , Female , Gestational Trophoblastic Disease/surgery , HELLP Syndrome/surgery , Humans , Hysterectomy , Middle Aged , Perimenopause , Pregnancy , Tomography, X-Ray Computed , Treatment Outcome
13.
J Clin Oncol ; 34(7): 706-13, 2016 Mar 01.
Article in English | MEDLINE | ID: mdl-26755507

ABSTRACT

PURPOSE: Volasertib is a potent and selective cell-cycle kinase inhibitor that induces mitotic arrest and apoptosis by targeting Polo-like kinase. This phase II trial evaluated volasertib or single-agent chemotherapy in patients with platinum-resistant or -refractory ovarian cancer who experienced failure after treatment with two or three therapy lines. PATIENTS AND METHODS: Patients were randomly assigned to receive either volasertib 300 mg by intravenous infusion every 3 weeks or an investigator's choice of single-agent, nonplatinum, cytotoxic chemotherapy. The primary end point was 24-week disease control rate. Secondary end points included best overall response, progression-free survival (PFS), safety, quality of life, and exploratory biomarker analyses. RESULTS: Of the 109 patients receiving treatment, 54 received volasertib and 55 received chemotherapy; demographics were well balanced. The 24-week disease control rates for volasertib and chemotherapy were 30.6% (95% CI, 18.0% to 43.2%) and 43.1% (95% CI, 29.6% to 56.7%), respectively, with partial responses in seven (13.0%) and eight (14.5%) patients, respectively. Median PFS was 13.1 weeks and 20.6 weeks for volasertib and chemotherapy (hazard ratio, 1.01; 95% CI, 0.66 to 1.53). Six patients (11%) receiving volasertib achieved PFS fore more than 1 year, whereas no patient receiving chemotherapy achieved PFS greater than 1 year. No relationship between the expression of the biomarkers tested and their response was determined. Patients treated with volasertib experienced more grade 3 and 4 drug-related hematologic adverse events (AEs) and fewer nonhematologic AEs than did patients receiving chemotherapy. Discontinuation resulting from AEs occurred in seven (13.0%) and 15 (27.3%) patients in the volasertib and chemotherapy arms, respectively. Both arms showed similar effects on quality of life. CONCLUSION: Single-agent volasertib showed antitumor activity in patients with ovarian cancer. AEs in patients receiving volasertib were mainly hematologic and manageable.


Subject(s)
Antineoplastic Agents/therapeutic use , Ovarian Neoplasms/drug therapy , Pteridines/therapeutic use , Adult , Aged , Aged, 80 and over , Biomarkers, Tumor/analysis , Carboplatin/therapeutic use , Cisplatin/therapeutic use , Disease Progression , Drug Resistance, Neoplasm , Female , Humans , Infusions, Intravenous , Middle Aged , Pteridines/administration & dosage , Quality of Life , Treatment Outcome
15.
Clin Cancer Res ; 21(11): 2530-7, 2015 Jun 01.
Article in English | MEDLINE | ID: mdl-25724520

ABSTRACT

PURPOSE: EGFR is frequently overexpressed in cervical cancer, suggesting EGFR blockade as a promising treatment approach. Cetuximab, an anti EGFR antibody, used conjointly with radiochemotherapy, was feasible in first-line treatment of cervix carcinoma limited to the pelvis. EXPERIMENTAL DESIGN: This randomized phase II trial enrolled 78 FIGO stage IB2-IIIB cervical cancer patients to either cisplatin-based radiochemotherapy alone (arm B, n = 38) or conjointly with a 6-week course of weekly cetuximab (arm A, n = 40). Brachytherapy was given to the pelvic mass. Primary endpoint was disease-free survival (DFS) at 2 years. EGFR expression and targeted sequencing were performed in 54 of 78 patients. RESULTS: Cetuximab over a 6-week period did not improve DFS at 24 months. At 31 months median follow-up, DFS was not significantly different (P = 0.18). Complete response at 4 to 6 months was strongly predictive for excellent DFS (log-rank test; P < 0.001). PIK3CA, KRAS, and STK11 mutations were observed in 22%, 4%, and 2% of patients, respectively. No tumor with a PI3K pathway mutation showed complete response (0/8 in arm A and 0/6 in arm B), whereas 14 of 52 (27%) tumors without mutations did (P = 0.021). PI3K pathway-mutated tumors showed a trend toward poorer DFS (P = 0.06) following cetuximab (8/22) as compared with those following standard treatment only (6/18). CONCLUSIONS: Similar to patients with head and neck cancer, patients with cervical cancer showed no gain in DFS at 2 years following a combined treatment of cetuximab with radiochemotherapy. Although treatment tolerance and compliance were satisfactory, it remains to be demonstrated whether maintenance therapy with cetuximab could be beneficial in selected patient groups.


Subject(s)
Cetuximab/administration & dosage , Chemoradiotherapy , Phosphatidylinositol 3-Kinases/genetics , Uterine Cervical Neoplasms/drug therapy , Uterine Cervical Neoplasms/radiotherapy , AMP-Activated Protein Kinase Kinases , Adult , Aged , Cisplatin/administration & dosage , Class I Phosphatidylinositol 3-Kinases , Disease-Free Survival , Female , Humans , Middle Aged , Mutation , Protein Serine-Threonine Kinases/genetics , Proto-Oncogene Proteins/genetics , Proto-Oncogene Proteins p21(ras) , Signal Transduction/drug effects , Uterine Cervical Neoplasms/pathology , ras Proteins/genetics
16.
Bull Cancer ; 102(3): 217-25, 2015 Mar.
Article in French | MEDLINE | ID: mdl-25749410

ABSTRACT

EXPRESSION III was designed to evaluate the information, needs and expectations of patients with ovarian cancer in different European countries. This abstract focuses on specific results from French OC patients. Two hundred and fifty-seven patients filled a 27-item questionnaire during a medical visit. Median age range was 63 years (26-89). Nearly all the patients (94 %) had primary surgery and adjuvant chemotherapy (95 %), 50 % had recurrent disease. At the time of the survey, 85 % reported symptoms: fatigue: 88 %, neuropathy: 55 %, nausea/vomiting: 40 %, pain: 39 %. Patients wished for non-alopeciant treatment (52 %) and a better management of fatigue (42 %). Eighty percent of the patients knew their chemotherapy but 60 % ignored their initial disease stage and how to find more information for treatment choice (91 %). Most patients (92 %) preferred to get it directly from their physician. Sixty-six percent expressed the need for clear information about their life expectancy. Still 21 % patients did not want to get negative information. French patients need for more support and clearer information on their disease. Direct information from their physician remains the mainstay of communication.


Subject(s)
Ovarian Neoplasms/drug therapy , Ovarian Neoplasms/surgery , Patient Education as Topic/standards , Adult , Aged , Aged, 80 and over , Antineoplastic Agents/adverse effects , Antineoplastic Agents/therapeutic use , Chemotherapy, Adjuvant/adverse effects , Fatigue/epidemiology , Female , France/epidemiology , Gastrointestinal Diseases/epidemiology , Health Surveys , Humans , Middle Aged , Neuralgia/epidemiology , Ovarian Neoplasms/pathology , Pain/epidemiology , Physician's Role , Physician-Patient Relations , Prognosis
17.
Lancet Oncol ; 15(4): 396-405, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24582486

ABSTRACT

BACKGROUND: Carboplatin plus paclitaxel administered every 3 weeks is standard first-line chemotherapy for patients with advanced ovarian cancer. A weekly paclitaxel schedule combined with carboplatin every 3 weeks prolonged progression-free survival and overall survival in a Japanese phase 3 trial. The aim of our study was to assess whether a weekly schedule of carboplatin plus paclitaxel is more effective than the same drugs given every 3 weeks. METHODS: We did a multicentre, randomised, phase 3 study at 67 institutions in Italy and France. Women with FIGO stage IC-IV ovarian cancer, an ECOG performance status of 2 or lower, and who had never received chemotherapy were randomly allocated in a 1:1 ratio to receive either carboplatin (AUC 6 mg/mL per min) plus paclitaxel (175 mg/m(2)) every 3 weeks for six cycles or carboplatin (AUC 2 mg/mL per min) plus paclitaxel (60 mg/m(2)) every week for 18 weeks. Randomisation was done by computer-based minimisation, stratified by centre, residual disease after surgery, and ECOG performance status. The study was not blinded. Coprimary endpoints were progression-free survival and quality of life (assessed by the Functional Assessment of Cancer Therapy Ovarian Trial Outcome Index [FACT-O/TOI] score), and analysis was by modified intention to treat. This report presents the final analysis. The study is registered with ClinicalTrials.gov, number NCT00660842. FINDINGS: 822 patients were enrolled into the study between Nov 20, 2008, and March 1, 2012; 12 withdrew their consent immediately after randomisation and were excluded, and 810 were eligible for analysis. 404 women were allocated treatment every 3 weeks and 406 were assigned to the weekly schedule. After median follow-up of 22·3 months (IQR 16·2-30·9), 449 progression-free survival events were recorded. Median progression-free survival was 17·3 months (95% CI 15·2-20·2) in patients assigned to treatment every 3 weeks, versus 18·3 months (16·8-20·9) in women allocated to the weekly schedule (hazard ratio 0·96, 95% CI 0·80-1·16; p=0·66). FACT-O/TOI scores differed significantly between the two schedules (treatment-by-time interaction p<0·0001); with treatment every 3 weeks, FACT-O/TOI scores worsened at every cycle (weeks 1, 4, and 7), whereas for the weekly schedule, after transient worsening at week 1, FACT-O/TOI scores remained stable. Fewer patients assigned to the weekly group than those allocated treatment every 3 weeks had grade 3-4 neutropenia (167 [42%] of 399 patients vs 200 [50%] of 400 patients), febrile neutropenia (two [0·5%] vs 11 [3%]), grade 3-4 thrombocytopenia (four [1%] vs 27 [7%]), and grade 2 or worse neuropathy (24 [6%] vs 68 [17%]). Three deaths during the study were attributed to chemotherapy; two women died who were allocated treatment every 3 weeks and one death was recorded in the group assigned the weekly regimen. INTERPRETATION: A weekly regimen of carboplatin and paclitaxel might be a reasonable option for first-line treatment of women with advanced ovarian cancer. FUNDING: None.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Ovarian Neoplasms/drug therapy , Adult , Aged , Aged, 80 and over , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Carboplatin/administration & dosage , Disease Progression , Disease-Free Survival , Drug Administration Schedule , Female , France , Humans , Italy , Kaplan-Meier Estimate , Middle Aged , Neoplasm Staging , Ovarian Neoplasms/mortality , Ovarian Neoplasms/pathology , Paclitaxel/administration & dosage , Proportional Hazards Models , Quality of Life , Risk Factors , Time Factors , Treatment Outcome , Young Adult
18.
J Clin Oncol ; 32(13): 1302-8, 2014 May 01.
Article in English | MEDLINE | ID: mdl-24637997

ABSTRACT

PURPOSE: In platinum-resistant ovarian cancer (OC), single-agent chemotherapy is standard. Bevacizumab is active alone and in combination. AURELIA is the first randomized phase III trial to our knowledge combining bevacizumab with chemotherapy in platinum-resistant OC. PATIENTS AND METHODS: Eligible patients had measurable/assessable OC that had progressed < 6 months after completing platinum-based therapy. Patients with refractory disease, history of bowel obstruction, or > two prior anticancer regimens were ineligible. After investigators selected chemotherapy (pegylated liposomal doxorubicin, weekly paclitaxel, or topotecan), patients were randomly assigned to single-agent chemotherapy alone or with bevacizumab (10 mg/kg every 2 weeks or 15 mg/kg every 3 weeks) until progression, unacceptable toxicity, or consent withdrawal. Crossover to single-agent bevacizumab was permitted after progression with chemotherapy alone. The primary end point was progression-free survival (PFS) by RECIST. Secondary end points included objective response rate (ORR), overall survival (OS), safety, and patient-reported outcomes. RESULTS: The PFS hazard ratio (HR) after PFS events in 301 of 361 patients was 0.48 (95% CI, 0.38 to 0.60; unstratified log-rank P < .001). Median PFS was 3.4 months with chemotherapy alone versus 6.7 months with bevacizumab-containing therapy. RECIST ORR was 11.8% versus 27.3%, respectively (P = .001). The OS HR was 0.85 (95% CI, 0.66 to 1.08; P < .174; median OS, 13.3 v 16.6 months, respectively). Grade ≥ 2 hypertension and proteinuria were more common with bevacizumab. GI perforation occurred in 2.2% of bevacizumab-treated patients. CONCLUSION: Adding bevacizumab to chemotherapy statistically significantly improved PFS and ORR; the OS trend was not significant. No new safety signals were observed.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Neoplasm Recurrence, Local/drug therapy , Ovarian Neoplasms/drug therapy , Adult , Aged , Aged, 80 and over , Antibodies, Monoclonal, Humanized/administration & dosage , Antibodies, Monoclonal, Humanized/adverse effects , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Bevacizumab , Disease-Free Survival , Doxorubicin/administration & dosage , Doxorubicin/adverse effects , Doxorubicin/analogs & derivatives , Doxorubicin/therapeutic use , Drug Administration Schedule , Drug Resistance, Neoplasm , Female , Humans , Middle Aged , Organoplatinum Compounds/pharmacology , Paclitaxel/administration & dosage , Paclitaxel/adverse effects , Paclitaxel/therapeutic use , Polyethylene Glycols/administration & dosage , Polyethylene Glycols/adverse effects , Polyethylene Glycols/therapeutic use , Topotecan/administration & dosage , Topotecan/adverse effects , Topotecan/therapeutic use
19.
Am J Obstet Gynecol ; 209(4): e4-6, 2013 Oct.
Article in English | MEDLINE | ID: mdl-23850527

ABSTRACT

A mother developed multimetastatic gestational choriocarcinoma 13 months after delivery, and her infant died aged 11 months from the same tumor. The transplacental choriocarcinoma transmission was confirmed by genotyping. Henceforth, we recommend a 2-year maternal human chorionic gonadotropin follow-up after neonatal choriocarcinoma and extensive imaging if the human chorionic gonadotropin rises.


Subject(s)
Choriocarcinoma/secondary , Chorionic Gonadotropin/blood , Liver Neoplasms/secondary , Maternal-Fetal Exchange , Pregnancy Complications, Neoplastic/pathology , Uterine Neoplasms/pathology , Biomarkers, Tumor , Choriocarcinoma/blood , Choriocarcinoma/genetics , Female , Genotype , Humans , Infant , Liver Neoplasms/blood , Liver Neoplasms/genetics , Male , Neoplasm Metastasis , Pregnancy , Pregnancy Complications, Neoplastic/blood , Pregnancy Complications, Neoplastic/genetics , Uterine Neoplasms/blood , Uterine Neoplasms/genetics
20.
Ann Bot ; 112(1): 123-34, 2013 Jul.
Article in English | MEDLINE | ID: mdl-23666888

ABSTRACT

BACKGROUND AND AIMS: The cultivated jute species Corchorus olitorius and Corchorus capsularis are important fibre crops. The analysis of repetitive DNA sequences, comprising a major part of plant genomes, has not been carried out in jute but is useful to investigate the long-range organization of chromosomes. The aim of this study was the identification of repetitive DNA sequences to facilitate comparative molecular and cytogenetic studies of two jute cultivars and to develop a fluorescent in situ hybridization (FISH) karyotype for chromosome identification. METHODS: A plasmid library was generated from C. olitorius and C. capsularis with genomic restriction fragments of 100-500 bp, which was complemented by targeted cloning of satellite DNA by PCR. The diversity of the repetitive DNA families was analysed comparatively. The genomic abundance and chromosomal localization of different repeat classes were investigated by Southern analysis and FISH, respectively. The cytosine methylation of satellite arrays was studied by immunolabelling. KEY RESULTS: Major satellite repeats and retrotransposons have been identified from C. olitorius and C. capsularis. The satellite family CoSat I forms two undermethylated species-specific subfamilies, while the long terminal repeat (LTR) retrotransposons CoRetro I and CoRetro II show similarity to the Metaviridea of plant retroelements. FISH karyotypes were developed by multicolour FISH using these repetitive DNA sequences in combination with 5S and 18S-5·8S-25S rRNA genes which enable the unequivocal chromosome discrimination in both jute species. CONCLUSIONS: The analysis of the structure and diversity of the repeated DNA is crucial for genome sequence annotation. The reference karyotypes will be useful for breeding of jute and provide the basis for karyotyping homeologous chromosomes of wild jute species to reveal the genetic and evolutionary relationship between cultivated and wild Corchorus species.


Subject(s)
Corchorus/genetics , Retroelements , Tandem Repeat Sequences , Amino Acid Sequence , Blotting, Southern , Cloning, Molecular , Cytogenetic Analysis , DNA Methylation , DNA, Satellite , In Situ Hybridization, Fluorescence , Karyotyping , Molecular Sequence Data , Physical Chromosome Mapping , RNA, Ribosomal , RNA, Ribosomal, 18S , RNA, Ribosomal, 5.8S
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