Publications by authors named "Seymour F"

Brexucabtagene autoleucel (brexu-cel) is an autologous CD19 CAR T-cell product, approved for relapsed/refractory (r/r) mantle cell lymphoma (MCL). In ZUMA-2, brexu-cel demonstrated impressive responses in patients failing ≥2 lines, including a bruton's tyrosine kinase inhibitor, with an overall and complete response rate of 93% and 67%, respectively. Here, we report our real-world intention-to-treat (ITT) outcomes for brexu-cel in consecutive, prospectively approved patients, from 12 institutions in the United Kingdom between February 2021 and June 2023, with a focus on feasibility, efficacy, and tolerability.

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Radiotherapy (RT) has potential synergistic effects with chimeric antigen receptor (CAR) T but is not widely used as bridging therapy due to logistical challenges and lack of standardised protocols. We analysed RT bridging in a multicentre national cohort of large B-cell lymphoma patients approved for 3L axicabtagene ciloleucel or tisagenlecleucel across 12 UK centres. Of 763 approved patients, 722 were leukapheresed, 717 had data available on bridging therapy.

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The success of CD19 Chimeric antigen receptor (CAR) T-cell therapy in large B-cell lymphoma (LBCL) has been partially offset by toxicity and logistical challenges, which off-the-shelf agents like CD20xCD3 bispecific antibodies might potentially overcome. However, when using CAR T outcomes as the 'standard-of-care comparator̕ for relapsed/refractory (r/r) LBCL, a potential learning curve with implementing a novel, complex therapy like CAR T needs to be considered. To address this, we analysed 726 UK patients intended to be treated with CD19 CAR T for r/r LBCL and compared outcomes between the first year of the national CAR T programme (Era 1; 2019) and the more recent treatment era (Era 2; 2020-2022).

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Collection of peripheral blood stem cells (PBSCs) for autologous stem cell transplant (ASCT) requires mobilization from the bone marrow. There is variation in mobilization choice; during the COVID-19 pandemic BSBMT&CT guidelines recommended using granulocyte-colony stimulating factor (G-CSF) alone to minimize the use of chemotherapy. We report on the impact of mobilization regimen on stem cell collection, and whether IMiD-containing induction therapy impacts on mobilization and consequently transplant engraftment times for 83 patients undergoing ASCT at Leeds Teaching Hospitals.

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The COVID-19 pandemic has had global healthcare impacts, including high mortality from SARS-CoV-2 infection in cancer patients; individuals with multiple myeloma (MM) are especially susceptible to poor outcomes. However, even for MM patients who avoided severe infection, the ramifications of the pandemic have been considerable. The consequences of necessary socio-geographical behavior adaptation, including prolonged shielding and interruptions in delivery of non-pandemic medical services are yet to be fully understood.

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Age-related immune dysfunction is primarily mediated by immunosenescence which results in ineffective clearance of infective pathogens, poor vaccine responses and increased susceptibility to multi-morbidities. Immunosenescence-related immunometabolic abnormalities are associated with accelerated aging, an inflammatory immune response (inflammaging) and ultimately frailty syndromes. In addition, several conditions can accelerate the development of immunosenescence, including cancer.

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Natural killer (NK) cells are the key cells of the innate immune system that share many characteristics with T lymphocytes; their activation, however, is based on the integration of a range of activatory and inhibitory signals via receptors recognizing recurrent pathogen-associated molecular patterns. Two important populations of NK cells with differing functions are recognized: CD56bright and CD56dim. NK cells have the potential to recognize and kill malignant plasma cells, which offers therapeutic opportunities.

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New Zealand's Sexual Violence Courts Pilot was established in late 2016, intended in part, to reduce the stress experienced by complainants. Young witnesses who testified in the specialist courts and their caregivers were interviewed about their experiences of court involvement. Interview transcripts were analysed using thematic analysis and the following themes were identified: The period between reporting an alleged offence and the trial is far too long and stressful; moving forward with life is difficult until the trial has concluded; cross-examination is distressing; feeling comfortable and supported when at court is important; safety and distance from the defendant when at court is important; separation of young witnesses from their caregivers at court is difficult; information is lacking throughout the process; and parenting young witnesses through the court process is challenging.

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Background: It is well-known that attempting antipsychotic withdrawal can be a fraught process, with a high risk of relapse that often leads people to resume the medication. Nonetheless, there is a group of people who appear to be able to discontinue successfully. Relatively little is known about how people do this.

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Aim: The New Zealand National Child Protection Alert System is administered by multidisciplinary teams in every district health board. The aim of this study was to investigate the factors that influence multidisciplinary child protection teams' (MDTs') decisions about whether to place a child protection alert.

Method: Members of the Child Protection Alert System teams were invited to participate in semi-structured interviews.

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Aim: To describe the multi-disciplinary child protection teams which administer the National Child Protection Alert System in District Health Boards in New Zealand and the understanding and perceptions of that system held by team members.

Methods: This is a mixed-method observational study. In December 2016 and January 2017, all child protection alert system multi-disciplinary team members were invited to participate in an online survey.

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Few studies explore subjective experiences of attempting to discontinue antipsychotic medication, the withdrawal methods people use, or how their efforts affect their outcomes. People who take antipsychotics for off-label purposes are poorly represented in the literature. This study investigates experiences of attempting to discontinue antipsychotics in a cross-sectional sample and explores potential associations between withdrawal methods, relapse, and success.

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Purpose: To explore supports and coping strategies used during attempts to discontinue antipsychotic medication and test for associations with success.

Method: 144 people who were taking or had taken antipsychotics completed The Experiences of Antipsychotic Medication Survey. Among them, 105 people had made at least one discontinuation attempt and answered a series of questions about their most recent attempt to stop.

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For effective provision of justice it is important that young witnesses are involved in criminal trials, yet participation may be detrimental to their well-being and presents challenges for gaining full and accurate evidence from them. Innovations in court processes intended to support the well-being of young witnesses should, amongst other considerations, be informed by the perspectives and experiences of those whom they are intended to assist. The participants in the current study consisted of young complainant witnesses who were involved in criminal court trials for sexual offences, along with their parents or caregivers.

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Opioid therapy for patients with chronic pain is increasing in frequency along with rates of opioid abuse. Many screening tools are available to assess for the risk of opioid abuse. NPs should use screening tools that are cross-validated for use in chronic pain patients in the Canadian primary healthcare setting.

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Caregiver support is vital in improving outcomes for child sexual abuse victims; however, the disclosure can significantly affect caregivers, thus impacting their ability to meet their children's needs. To maximize the support from caregivers, their own needs following disclosure need to be met. This study investigated the impact of child sexual abuse disclosure and associated needs as identified by caregivers.

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Background: To assess the postintervention arson recidivism and other offending rates of a group of 182 firesetting children and adolescents referred to the New Zealand Fire Awareness and Intervention Program (FAIP) over a follow-up period of 10 years. To investigate predictors of offending behaviour as well as variables associated with previous involvement in firesetting behaviour and offending severity.

Method: Data collected at the time of the FAIP intervention was provided by the New Zealand Fire Service and the offence histories of the sample were accessed from the New Zealand Police database (NIA).

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The importance of interventions for non-offending caregivers following the disclosure of child sexual abuse (CSA) is increasingly recognised in the literature. These interventions are particularly important given what is currently known about the impact of CSA disclosure on non-offending caregivers and the value of caregiver support in assisting their children's recovery. This review provides summary background information on the prevalence and short-term impact of CSA on children, with a particular focus on variables that mediate outcomes including caregiver support.

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Background: Outcome measurement in child and adolescent mental health services in New Zealand became mandatory in 2005 and little is known about how this is perceived by service users.

Aims: This study aimed to ascertain what service users think about routine outcome measurement in child and adolescent mental health services.

Method: Nine semi-structured focus groups of child and adolescent service users (n=34) and family members (n=21) were held in different sites in New Zealand to determine their views on outcome measures.

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A significant number of children and adolescents engage in deliberate fire setting, beyond the scope of curiosity and experimentation. Interventions developed to respond to the needs of such fire setters generally involve educational and/or psychosocial approaches. Research evaluating the effectiveness of these interventions is dominated by outcome studies which rely on recidivism rates determined by either official records or parent reports.

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Reintegration of offenders following incarceration is most successful if matched to the needs of offenders, victims, and the community. This study explored child sex offenders' expectations for and experiences of reintegration into the community. A longitudinal design was used in which semistructured interviews covered issues identified in the literature as being related to reintegration.

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