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1.
Br J Haematol ; 204(2): 487-491, 2024 02.
Article in English | MEDLINE | ID: mdl-37669920

ABSTRACT

We analysed COVID-19 infection outcomes of 129/241 chronic lymphocytic leukaemia (CLL) (53.9%) and 22/55 monoclonal B-lymphocytosis (MBL) (40.0%) patients following multiple vaccine doses aiming for maximum measured anti-spike antibody response. Throughout the pandemic to date, there were 8/129 CLL (6.2%) patients hospitalised, with one death (0.8%). No MBL patients were hospitalised or died. CLL patients with COVID-19 had lower anti-spike levels (3778.8 AU/mL) than those without (13 486.8 AU/mL; p = 0.0061). Anti-nucleocapsid antibody was detected in 29.8% within 2 months and 17.5% >6 months. Of COVID-19-infected CLL patients, 47.3% received anti-viral therapy. A multiple vaccine dosing strategy to achieve measured maximum antibody is highly effective in preventing severe COVID-19.


Subject(s)
COVID-19 , Leukemia, Lymphocytic, Chronic, B-Cell , Lymphocytosis , Vaccines , Humans , B-Lymphocytes , COVID-19 Vaccines , Antibody Formation , Vaccination
2.
Blood ; 140(25): 2709-2721, 2022 12 22.
Article in English | MEDLINE | ID: mdl-36206503

ABSTRACT

Patients with chronic lymphocytic leukemia (CLL) or monoclonal B-lymphocytosis (MBL) have impaired response to COVID-19 vaccination. A total of 258 patients (215 with CLL and 43 with MBL) had antispike antibody levels evaluable for statistical analysis. The overall seroconversion rate in patients with CLL was 94.2% (antispike antibodies ≥50 AU/mL) and 100% in patients with MBL after multiple vaccine doses. After 3 doses (post-D3) in 167 patients with CLL, 73.7% were seropositive, 17.4% had antispike antibody levels between 50 and 999 AU/mL, and 56.3% had antispike antibody levels ≥1000 AU/mL, with a median rise from 144.6 to 1800.7 AU/mL. Of patients who were seronegative post-D2, 39.7% seroconverted post-D3. For those who then remained seronegative after their previous dose, seroconversion occurred in 40.6% post-D4, 46.2% post-D5, 16.7% post-D6, and 0% after D7 or D8. After seroconversion, most had a progressive increase in antispike antibody levels. Neutralization was associated with higher antispike antibody levels, more vaccine doses, and earlier severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants; neutralizing antibody against early clade D614G was detected in 65.3%, against Delta in 52.0%, and against Omicron in 36.5%. SARS-CoV-2-specific T-cell production of interferon γ and interleukin 2 occurred in 73.9% and 60.9%, respectively, of 23 patients tested. After multiple vaccine doses, by multivariate analysis, immunoglobulin M ≥0.53 g/L, immunoglobulin subclass G3 ≥0.22 g/L and absence of current CLL therapy were independent predictors of positive serological responses. Multiple sequential COVID-19 vaccination significantly increased seroconversion and antispike antibody levels in patients with CLL or MBL.


Subject(s)
COVID-19 , Leukemia, Lymphocytic, Chronic, B-Cell , Lymphocytosis , Humans , COVID-19 Vaccines , Leukemia, Lymphocytic, Chronic, B-Cell/therapy , Seroconversion , COVID-19/prevention & control , SARS-CoV-2 , Immunoglobulin M , Immunoglobulin G , Immunity , Antibodies, Viral
3.
Reprod Biomed Online ; 48(2): 103637, 2024 02.
Article in English | MEDLINE | ID: mdl-38185024

ABSTRACT

RESEARCH QUESTION: What factors do assisted reproductive terchnology (ART) providers take into account when they make decisions about offering 'add-ons'? DESIGN: A qualitative analysis of interviews with 31 ART professionals, focusing on their views and experiences in relation to add-ons, including the factors that are considered when doctors make decisions about their use. RESULTS: The participants reported that a range of considerations are taken into account when it comes to justifying the use of a particular add-on in a given circumstance, including the likelihood of benefit and harm, patients' perceived psychological needs and preferences, and organizational expectations. Importantly, patient preferences, psychological factors and low risk of harm appear to be stronger motivations than increasing the likelihood of a live birth or the desire to innovate. CONCLUSIONS: These findings suggest that it cannot be taken for granted that add-ons and innovation are closely linked. One possible response to this would be regulatory reform; for example, only allowing 'unproven' add-ons to be used in the context of formal scientific evaluation. Alternatively, it could be made clear that add-ons that are not undergoing formal evaluation have more in common with other therapies lacking a clear evidence base, such as complementary and alternative medicines, than with conventional medical practice. Practices in relation to add-ons may also require a focus on the responsibilities of corporations, and the standards applying to purveyors of consumer goods and services.


Subject(s)
Evidence-Based Medicine , Fertilization in Vitro , Pregnancy , Female , Humans , Reproductive Techniques, Assisted , Live Birth , Morals
4.
Reprod Biomed Online ; 48(6): 103850, 2024 06.
Article in English | MEDLINE | ID: mdl-38582042

ABSTRACT

RESEARCH QUESTION: What are the views and experiences of patient and expert stakeholders on the positive and negative impacts of commercial influences on the provision of assisted reproductive technology (ART) services, and what are their suggestions for governance reforms? DESIGN: Semi-structured interviews were conducted with 31 ART industry experts from across Australia and New Zealand and 25 patients undergoing ART from metropolitan and regional Australia, between September 2020 and September 2021. Data were analysed using thematic analysis. RESULTS: Expert and patient participants considered that commercial forces influence the provision of ART in a number of positive ways - increasing sustainability, ensuring consistency in standards and providing patients with greater choice. Participants also considered commercial forces to have a number of negative impacts, including increased costs to government and patients; the excessive use of interventions that lack sufficient evidence to be considered part of standard care; inadequately informed consent (particularly with regard to financial information); and threats to patient-provider relationships and patient-centred care. Participants varied in whether they believed that professional self-regulation is sufficient. While recognizing the benefits of commercial investment in healthcare, many considered that regulatory reforms, as well as organizational cultural initiatives, are needed as means to ensure the primacy of patient well-being. CONCLUSIONS: The views expressed in this study should be systematically and critically examined to derive insights into how best to govern ART. These insights may also inform the design and delivery of other types of healthcare that are provided in the private sector.


Subject(s)
Reproductive Techniques, Assisted , Humans , Reproductive Techniques, Assisted/economics , Australia , Female , New Zealand , Male , Adult , Attitude of Health Personnel
5.
Bioethics ; 38(2): 138-152, 2024 02.
Article in English | MEDLINE | ID: mdl-38115678

ABSTRACT

Clinical trials play a crucial role in generating evidence about healthcare interventions and improving outcomes for current and future patients. For individual trial participants, however, there are inevitably trade-offs involved in clinical trial participation, given that trials have traditionally been designed to benefit future patient populations rather than to offer personalised care. Failure to understand the distinction between research and clinical care and the likelihood of benefit from participation in clinical trials has been termed the 'therapeutic misconception'. The evolution of the clinical trials landscape, including greater integration of clinical trials into healthcare and development of novel trial methodologies, may reinforce the significance of the therapeutic misconception and other forms of misunderstanding while at the same time (paradoxically) challenging its salience. Using cancer clinical trials as an exemplar, we describe how methodological changes in early- and late-phase clinical trial designs, as well as changes in the design and delivery of healthcare, impact upon the therapeutic misconception. We suggest that this provides an impetus to re-examine the ethics of clinical research, particularly in relation to trial access, participant selection, communication and consent, and role delineation.


Subject(s)
Neoplasms , Therapeutic Misconception , Humans , Informed Consent , Neoplasms/therapy , Communication , Forecasting
6.
Sociol Health Illn ; 2024 Feb 22.
Article in English | MEDLINE | ID: mdl-38386331

ABSTRACT

The proliferation of assisted dying legislative reforms globally is a significant change in the social and medico-legal landscape of end-of-life care. Understanding the impacts of these legislative reforms on family members who care for a dying person is vital, yet under-theorised in research. In this article, drawing on semi-structured interviews with 42 carers for a person who has sought assisted dying in Australia, and extending ideas of ontological choreography we explore the new and complex choreographies enacted by carers in their endeavour to arrange a 'good death' for the dying person. We find that desires to fulfil the dying person's wishes are often accompanied by normative pressures, affective tensions and complexities in bereavement. Enacting assisted dying requires carers to perform a repertoire of highly-staged practices. Yet, institutional obstacles and normative cultural scripts of dying can constrain carer assisted dying practices. Understanding the nuances of carers' experiences and how they navigate this new end-of-life landscape, we argue, provides critical insights about how assisted dying legislation is producing new cultural touchpoints for caring at the end of life. Moreover, we show how emerging cultural scripts of assisted dying are impacting in the lives of these carers.

7.
Med Law Rev ; 32(3): 356-372, 2024 Aug 01.
Article in English | MEDLINE | ID: mdl-38722671

ABSTRACT

In recent years, concerns about the financial burdens of health care and growing recognition of the relevance of cost to decision making and patient experience have increasingly focused attention on financial 'transparency' and disclosure of costs to patients. In some jurisdictions, there have been calls not only for timely disclosure of costs information, but also for 'informed financial consent'. However, simply putting the 'financial' into 'informed consent' and invoking an informed consent standard for cost information encounters several ethical, legal, and practical difficulties. This article will examine the viability and desirability of 'informed financial consent', and whether it is possible to derive ideas from traditional informed consent that may improve decision making and the patient experience. We argue that, while there are important legal, ethical, and practical challenges to consider, some of the principles of informed consent to treatment can usefully guide financial communication. We also argue that, while medical practitioners (and their delegates) have an important role to play in bridging the gap between disclosure and enabling informed (financial) decision making, this must be part of a multi-faceted approach to financial communication that acknowledges the influence of non-clinical providers and other structural forces on discharging such obligations.


Subject(s)
Informed Consent , Humans , Disclosure/legislation & jurisprudence , Decision Making , Health Care Costs
8.
J Relig Health ; 2024 Mar 25.
Article in English | MEDLINE | ID: mdl-38528276

ABSTRACT

The implementation of voluntary assisted dying (VAD) in the Australian State of Victoria in 2019 has stimulated discussions about end-of-life care and dying in many communities. Various attempts have been made to represent the attitudes of the Jewish community, a distinct culturally and linguistically diverse (CALD) group, in terms that suggest a unified set of opinions that opposes VAD policies. This research aimed to explore attitudes to VAD in the context of end-of-life care held by members of the Victorian Jewish community. A descriptive qualitative methodological design was employed. Ten Victorians who identify as Jewish were recruited and participated in in-depth, semi-structured interviews. Reflexive thematic analysis was carried out on the transcripts to identify key themes, attitudes and preferences in relation to end-of-life care, death and dying, and VAD. Three themes were identified: "complexity and variation", "similarities", and "factors influencing attitudes to VAD and end-of-life care". A significant degree of diversity was apparent, ranging from highly supportive of VAD to advocacy for a total repeal of the policy. The results indicate that images of how Victorian Jewish individuals feel towards VAD based on essentialised notions about the community and belief systems are not supported by the evidence. In reality, considerable diversity of attitudes exists towards VAD and end-of-life care. We conclude that it is important that policymakers and members of the broader society avoid stereotypes that falsely characterise this specific community and, by implication, other CALD groups, particularly in terms that ignore internal diversity regarding belief systems, social attitudes and ethical perspectives.

9.
Med Law Rev ; 2024 Jul 25.
Article in English | MEDLINE | ID: mdl-39049472

ABSTRACT

In Australia and the UK, commercialization and corporatization of assisted reproductive technologies have created a marketplace of clinics, products, and services. While this has arguably increased choice for patients, 'choice', shaped by commercial imperatives may not mean better-quality care. At present, regulation of clinics (including clinic-corporations) and clinicians focuses on the doctor-patient dyad and the clinic-consumer dyad. Scant attention has been paid to the conflicts between the clinic-corporation's duty to its shareholders and investors, the medical profession's duty to the corporations within which they practice, and the obligations of both clinicians and corporations to patients and to health systems. Frameworks of regulation based in corporate governance and business ethics, such as stakeholder models and 'corporate social responsibility', have well-recognized limits and may not translate well into healthcare settings. This means that existing governance frameworks may not meet the needs of patients or health systems. We argue for the development of novel regulatory approaches that more explicitly characterize the obligations that both corporations and clinicians in corporate environments have to patients and to society, and that promote fulfilment of these obligations. We consider mechanisms for application in the multi-jurisdictional setting of Australia, and the single jurisdictional settings of the UK.

10.
Curr Treat Options Oncol ; 24(10): 1351-1364, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37535255

ABSTRACT

OPINION STATEMENT: In considering the impact of medically hastened death (MHD) on cancer care, a wide range of variables needs to be considered including demographic factors, diagnoses, local cultural factors, and the legislative frameworks in place. Here, we present a synthesis of recently available published literature and empirical data collected following legislative change to enable MHD in Victoria, Australia to explore in detail the potential impact of MHD on cancer care with a focus on patients/families and professional groups. Our findings reveal that for patients and families, both physical and existential distress frequently underlie MHD requests, with the latter less readily recognised by health professionals. The responses of those around the patient making the request may have a very significant impact on relationships within families and upon the nature of the subsequent bereavement. For palliative care, while differing views may remain, it appears that there has been some accommodation of MHD into or alongside practice over time. The recognition of a shared commitment to relief of suffering of palliative care and MHD appears a helpful means of establishing how these practices may co-exist. In cancer practice more broadly, as individual professionals reflect upon their own roles, new relationships and pathways of patient movement (or referral) must be established in response to patients' requests. Our findings also highlight many unanswered questions in understanding the impact of MHD, including that upon those dying who choose not to access MHD, First Nations peoples, the participating health professionals' longer term, and the relief of suffering itself. A systematic approach to the evaluation of MHD legislation must be adopted in order to understand its full impact. Only then could it be determined if the aspirations for such legislative change were being met.

11.
Intern Med J ; 53(2): 271-274, 2023 02.
Article in English | MEDLINE | ID: mdl-36822606

ABSTRACT

Many factors influence patients' decisions to participate in clinical trials. For many, the primary motivation is the possibility that they might derive some benefit from participation. This is particularly true for patients with limited treatment options, such as patients with advanced cancer. While this is not surprising, it is potentially problematic if patients fail to recognise the distinction between research and clinical care (a phenomenon known as the 'therapeutic misconception'). This is becoming increasingly problematic as clinical trial designs become more complex, as clinical trials become more embedded in routine clinical care, and as trials are increasingly used by patients and clinicians to access new diagnostic platforms and therapies. We outline some of these recent trends, focusing on the cancer clinical trials landscape as this provides a good case study of the phenomenon. We conclude by making preliminary suggestions that changes to the consent process, perhaps using 'dynamic consent' platforms, might help to mitigate the therapeutic misconception and note the need for further research to guide strategies for improving communication and decision-making.


Subject(s)
Neoplasms , Therapeutic Misconception , Humans , Informed Consent , Communication
12.
Intern Med J ; 53(12): 2180-2197, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37029711

ABSTRACT

BACKGROUND: Eligibility to access the Victorian voluntary assisted dying (VAD) legislation requires that people have a prognosis of 6 months or less (or 12 months or less in the setting of a neurodegenerative diagnosis). Yet prognostic determination is frequently inaccurate and prompts clinician discomfort. Based on functional capacity and clinical and biochemical markers, prognostic tools have been developed to increase the accuracy of life expectancy predictions. AIMS: This review of prognostic tools explores their accuracy to determine 6-month mortality in adults when treated under palliative care with a primary diagnosis of cancer (the diagnosis of a large proportion of people who are requesting VAD). METHODS: A systematic search of the literature was performed on electronic databases Medline, Embase and Cinahl. RESULTS: Limitations of prognostication identified include the following: (i) prognostic tools still provide uncertain prognoses; (ii) prognostic tools have greater accuracy predicting shorter prognoses, such as weeks to months, rather than 6 months; and (iii) functionality was often weighted significantly when calculating prognoses. Challenges of prognostication identified include the following: (i) the area under the curve (a value that represents how well a model can distinguish between two outcomes) cannot be directly interpreted clinically and (ii) difficulties exist related to determining appropriate thresholds of accuracy in this context. CONCLUSIONS: Prognostication is a significant aspect of VAD, and the utility of the currently available prognostic tools appears limited but may prompt discussions about prognosis and alternative means (other than prognostic estimates) to identify those eligible for VAD.


Subject(s)
Neoplasms , Suicide, Assisted , Adult , Humans , Neoplasms/therapy , Palliative Care/methods , Prognosis , Uncertainty
13.
Intern Med J ; 53(8): 1306-1310, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37255280

ABSTRACT

Novel medicines are entering the market rapidly and are increasingly being used alone or in combination to treat illnesses of every sort. While transforming the lives of many patients, these new therapies have also forced us to reconsider the way we evaluate, use and fund medicines. This article offers a primer to help practitioners understand how the therapeutic landscape is changing and how this might impact the evidence generation, access to interventions, patient experience and quality of care.

14.
Intern Med J ; 53(12): 2162-2174, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37528613

ABSTRACT

Haematopoietic stem cell transplantation is a mainstay of therapy for numerous malignant and nonmalignant diseases. Endothelial activation and dysfunction occur after stem cell transplantation, driven by various patient- and transplant-specific factors. This can manifest as one of the relatively uncommon endothelial injury syndromes, such as sinusoidal obstruction syndrome, transplant-associated thrombotic microangiopathy, idiopathic pneumonia syndrome, capillary leak syndrome, engraftment syndrome or posterior reversible encephalopathy syndrome. This review focuses on the pathogenesis, classification and diagnosis of these disorders, as well as provides guidance on risk mitigation and treatment.


Subject(s)
Hematologic Diseases , Hematopoietic Stem Cell Transplantation , Pneumonia , Posterior Leukoencephalopathy Syndrome , Thrombotic Microangiopathies , Humans , Posterior Leukoencephalopathy Syndrome/complications , Hematopoietic Stem Cell Transplantation/adverse effects , Thrombotic Microangiopathies/diagnosis , Thrombotic Microangiopathies/etiology , Thrombotic Microangiopathies/therapy
15.
Intern Med J ; 2023 Dec 14.
Article in English | MEDLINE | ID: mdl-38093686

ABSTRACT

BACKGROUND: In the context of nationwide law reform, New South Wales (NSW) became the last state in Australia to legalise voluntary assisted dying (VAD) - commencing 28 November 2023. Clinicians have divergent views regarding VAD, with varying levels of understanding, support, and willingness to be involved, and these may have a significant impact on the successful implementation. AIMS: To understand levels of support, understanding and willingness to be involved in VAD among clinical staff across NSW during implementation of VAD. METHODS: A multisite, cross-sectional online survey of clinicians across four local health districts, assessing relevant demographics, awareness of and support for VAD legislation and willingness to be involved in different levels of VAD-related clinical activities. RESULTS: A total of 3010 clinical staff completed the survey. A majority of participants were aware of VAD legislation in NSW (86.35%) and supportive of it (76%), with nursing and allied health clinicians significantly more likely than medical specialists to express support. Among medical specialists, support was statistically more likely in those who did not care for patients at the end of life and those with limited knowledge of the legislation. Willingness of medical specialists to perform key roles was significantly lower, with 41.49% willing to act in coordinating or consulting roles, and only 23.21% as administering practitioners. CONCLUSIONS: The majority of clinical staff surveyed across NSW supported VAD legislation. While many eligible clinicians were reluctant to be actively involved, sufficient numbers appear willing to provide VAD services, indicating that successful implementation should be possible.

16.
Intern Med J ; 53(11): 1979-1986, 2023 Nov.
Article in English | MEDLINE | ID: mdl-36878730

ABSTRACT

BACKGROUND: Corticosteroids (CSs) have previously been incorporated into graft versus host disease (GVHD) prophylaxis regimens for bone marrow (BM) and haemopoietic stem cell transplant (HSCT). AIMS: To assess the impact of prophylactic CS in HSCT using peripheral blood (PB) stem cells. METHODS: Patients were identified from three HSCT centres receiving a first PB-HSCT between January 2011 and December 2015 from a fully human leukocyte antigen (HLA)-matched sibling or unrelated donor for acute myeloid leukaemia or acute lymphoblastic leukaemia. To enable meaningful comparison, patients were divided into two cohorts. RESULTS: Cohort 1 included only myeloablative-matched sibling HSCT, where the only variation in GVHD prophylaxis was the addition of CS. In these 48 patients, there were no differences in GVHD, relapse, non-relapse mortality, overall survival or GVHD-relapse-free-survival (GRFS) at 4 years after transplant. Cohort 2 included the remaining HSCT recipients, where one group received CS-prophylaxis and the non-CS group received an antimetabolite, ciclosporin and anti-T-lymphocyte globulin. In these 147 patients, those receiving CS-prophylaxis experienced higher rates of chronic GVHD (71% vs 18.1%, P < 0.001) and lower rates of relapse (14.9% vs 33.9%, P = 0.02). Those receiving CS-prophylaxis had a lower 4-year GRFS (15.7% vs 40.3%, P = 0.002). CONCLUSIONS: There does not appear to be a role for adding CS to standard GVHD prophylaxis regimens in PB-HSCT.


Subject(s)
Graft vs Host Disease , Hematopoietic Stem Cell Transplantation , Peripheral Blood Stem Cell Transplantation , Humans , Neoplasm Recurrence, Local , Graft vs Host Disease/prevention & control , Adrenal Cortex Hormones/therapeutic use , Cohort Studies , Recurrence , Retrospective Studies
17.
Health Expect ; 26(6): 2340-2348, 2023 12.
Article in English | MEDLINE | ID: mdl-37539651

ABSTRACT

CONTEXT: In vitro fertilisation (IVF) is now a common assisted reproductive technology (ART) procedure globally, with 8 million children alive today having been conceived utilising IVF. For many patients, IVF is a difficult experience with many discontinuing treatment because of emotional, relationship and financial stress, or intolerable physical side effects of hormone treatments. DESIGN AND PARTICIPANTS: A qualitative study, in which 31 professionals and 25 patients from the ART sector in Australia were interviewed. The interviews were analysed using codebook thematic analysis. RESULTS: Our data indicates there are 'silences' within the therapeutic relationship of IVF, which may limit the capacity for patients to prepare emotionally, financially, or medically for the procedure, and may contribute to psychological distress and dissatisfaction with care. These 'silences' include what the patient 'is not told' by their clinician or 'does not hear' and what the patient feels they 'cannot say'. DISCUSSION: Drawing upon the work of Jay Katz, Charis Thompson, and Miles Little on 'silences' and performance in clinical practice, we argue that although IVF is a complex and multifaceted procedure that is often conducted in a commercial setting, the clinical and therapeutic relationship between doctor and patient remains pivotal to the experiences of patients. The 'silences' within this relationship may impact negatively on decision-making, and on the delivery and experience of care. CONCLUSIONS: Careful attention to the realities of IVF treatment in the clinic room (and awareness of the performances that hide them) should allow for more present and compassionate care. Such care may leave patients more satisfied with their experience and their choices, regardless of treatment outcomes. PATIENT OR PUBLIC CONTRIBUTION: This article draws on interviews with patients who had undergone or were currently undergoing IVF, as well as a range of representatives from the ART community (including reproductive medicine specialists, general practitioners, fertility nurses, counsellors, administrators in ART businesses and embryologists).


Subject(s)
Fertilization in Vitro , General Practitioners , Child , Humans , Pregnancy , Female , Pregnancy Outcome , Australia , Communication
18.
J Law Med ; 30(4): 806-821, 2023 Dec.
Article in English | MEDLINE | ID: mdl-38459874

ABSTRACT

This column examines conscientious objection and institutional objection in Australian voluntary assistance in dying. It reviews the current legislative regimes and then examines these practices from an ethical perspective, and raises particular concerns and suggestions with how conscientious objection and institutional objection should be operationalised.


Subject(s)
Conscience , Refusal to Treat , Australia , Health Facilities
19.
Br J Haematol ; 197(1): 41-51, 2022 04.
Article in English | MEDLINE | ID: mdl-34962656

ABSTRACT

Chronic lymphocytic leukaemia (CLL) is associated with immunocompromise and high risk of severe COVID-19 disease and mortality. Monoclonal B-cell lymphocytosis (MBL) patients also have immune impairment. We evaluated humoural and cellular immune responses in 181 patients with CLL (160) and MBL (21) to correlate failed seroconversion [<50 AU/ml SARS-CoV-2 II IgG assay, antibody to spike protein; Abbott Diagnostics)] following each of two vaccine doses with clinical and laboratory parameters. Following first and second doses, 79.2% then 45% of CLL, and 50% then 9.5% of MBL patients respectively remained seronegative. There was significant association between post dose two antibody level with pre-vaccination reduced IgM (p < 0.0001), IgG2 (p < 0.035), and IgG3 (p < 0.046), and CLL therapy within 12 months (p < 0.001) in univariate analysis. By multivariate analysis, reduced IgM (p < 0.0002) and active therapy (p < 0.0002) retained significance. Anti-spike protein levels varied widely and were lower in CLL than MBL patients, and both lower than in normal donors. Neutralisation activity showed anti-spike levels <1000 AU/ml were usually negative for both an early viral clade and the contemporary Delta variant and 72.9% of CLL and 53.3% of MBL failed to reach levels ≥1000 AU/ml. In a representative sample, ~80% had normal T-cell responses. Failed seroconversion occurred in 36.6% of treatment-naïve patients, in 78.1% on therapy, and in 85.7% on ibrutinib.


Subject(s)
COVID-19 , Leukemia, Lymphocytic, Chronic, B-Cell , Lymphocytosis , B-Lymphocytes , COVID-19 Vaccines , Humans , Immunity, Cellular , Leukemia, Lymphocytic, Chronic, B-Cell/complications , Lymphocytosis/complications , SARS-CoV-2
20.
Intern Med J ; 52(6): 1083-1088, 2022 06.
Article in English | MEDLINE | ID: mdl-35718731

ABSTRACT

Myeloid sarcoma (MS), also termed 'chloroma' or 'granulocytic sarcoma', is a tumour mass consisting of myeloid blasts occurring at an anatomical site other than the bone marrow. MS occurs in up to 8% of patients with acute myeloid leukaemia. While MS typically involves the skin or lymph nodes, almost any tissue can be affected, and symptoms largely depend on the organ involved and subsequent mass effect. We present a case series of patients that presented to a tertiary hospital with MS affecting the central nervous system over a 4-month period. These three cases demonstrate the vast spectrum of clinical presentations of MS and, furthermore, show rare examples of intramedullary spinal cord involvement and disseminated intraparenchymal brain disease.


Subject(s)
Central Nervous System Neoplasms , Sarcoma, Myeloid , Central Nervous System Neoplasms/diagnostic imaging , Central Nervous System Neoplasms/pathology , Humans , Sarcoma, Myeloid/diagnostic imaging , Sarcoma, Myeloid/pathology
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