Publications by authors named "Gavin Cull"

Population-based studies have demonstrated a high risk of second cancers, especially of the skin, among patients with chronic lymphocytic leukaemia (CLL). We describe age-standardised incidence ratios (SIRs) of second primary malignancies (SPM) in Australian patients with relapsed/refractory CLL treated with at least two lines of therapy, including ibrutinib. From December 2014 to November 2017, 156 patients were identified from 13 sites enrolled in the Australasian Lymphoma and Related Diseases Registry, and 111 had follow-up data on rates of SPM.

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  • There is a growing interest in using historical patient data as synthetic controls for evaluating new drugs, but real-world outcomes often don't match those from clinical trials due to a lack of detailed cancer treatment data.
  • The Australasian Leukaemia and Lymphoma Group's National Blood Cancer Registry (ALLG NBCR) provides comprehensive information on various factors influencing treatment outcomes, allowing for a comparison of 942 AML patients to clinical trial data for five specific drugs.
  • The analysis reveals significant differences in treatment approaches and outcomes between real-world patients and clinical trial participants, indicating that while some results may align, discrepancies must be considered for accurately assessing the effectiveness of new therapies across different populations.
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  • The phase 3 ASPEN trial compared the effectiveness of two BTK inhibitors, zanubrutinib and ibrutinib, in treating Waldenström macroglobulinemia, analyzing genetic mutations' impact on treatment response.
  • The study found that patients with mutations in CXCR4 and TP53 had poorer responses and survival rates but those treated with zanubrutinib generally showed better outcomes than those given ibrutinib.
  • Overall, the research indicated that zanubrutinib offers improved clinical outcomes for patients with specific mutations compared to ibrutinib, highlighting the importance of genetic testing in treatment decision-making.
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Background: Studies on the efficacy of rituximab in primary CNS lymphoma (PCNSL) reported conflicting results. Our international randomized phase 3 study showed that the addition of rituximab to high-dose methotrexate, BCNU, teniposide, and prednisolone (MBVP) in PCNSL was not efficacious in the short term. Here we present long-term results after a median follow-up of 82.

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  • - Chronic lymphocytic leukaemia (CLL) is the most common blood cancer in Australia and New Zealand, with significant advancements in diagnosis and treatment in the past decade.
  • - New technologies like next-generation sequencing and flow cytometry help doctors predict outcomes and monitor treatment responses more effectively, while new therapies have improved care for patients, especially those with high-risk genetic issues.
  • - Given the unique healthcare landscape in Australasia, experts have created a consensus practice statement to provide standardized guidelines for CLL diagnosis and management, keeping in mind public health concerns like the COVID-19 pandemic.
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Sorafenib maintenance improves outcomes after hematopoietic cell transplant (HCT) for patients with FMS-like tyrosine kinase 3-internal tandem duplication (FLT3-ITD) acute myeloid leukemia (AML). Although promising outcomes have been reported for sorafenib plus intensive chemotherapy, randomized data are limited. This placebo-controlled, phase 2 study (ACTRN12611001112954) randomized 102 patients (aged 18-65 years) 2:1 to sorafenib vs placebo (days 4-10) combined with intensive induction: idarubicin 12 mg/m2 on days 1 to 3 plus either cytarabine 1.

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  • The phase III ASPEN study showed that zanubrutinib is as effective as ibrutinib but has better safety for treating patients with Waldenström macroglobulinemia (WM).
  • In a long-term follow-up, zanubrutinib demonstrated higher rates of very good partial response and complete response compared to ibrutinib in both cohorts of WM patients.
  • Adverse events like diarrhea, muscle spasms, and hypertension were more common with ibrutinib, while zanubrutinib had a lower risk of treatment-related discontinuation.
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The phase I/II AU-003 study in patients with treatment-naïve (TN) or relapsed/refractory (R/R) chronic lymphocytic leukaemia/small lymphocytic lymphoma demonstrated that zanubrutinib therapy results in clinically meaningful and durable responses with acceptable safety and tolerability. We report updated safety and efficacy data for 123 patients with a median follow-up of 47·2 months. Patients received zanubrutinib 160 mg twice daily (81 patients), 320 mg once daily (40), or 160 mg once daily (two).

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Zanubrutinib is a selective Bruton tyrosine kinase (BTK) inhibitor evaluated in multiple B-cell malignancy studies. We constructed a pooled safety analysis to better understand zanubrutinib-associated treatment-emergent adverse events (TEAEs) and identify treatment-limiting toxicities. Data were pooled from 6 studies (N = 779).

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Hydroa vacciniforme-like lymphoproliferative disorder (HV-LPD) is a rare Epstein-Barr virus (EBV)-positive T-cell lymphoproliferative disorder (LPD) which primarily affects children from Latin America and Asia. Typical features include vesicles and ulceration in sun-exposed areas which may be accompanied by systemic symptoms such as fever, lymphadenopathy and hepatosplenomegaly. We report a 73-year-old man diagnosed with HV-LPD in the context of zanubrutinib (oral Bruton tyrosine kinase (BTK)-inhibitor) treatment for chronic lymphocytic leukemia (CLL).

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Zanubrutinib, a highly selective Bruton tyrosine kinase inhibitor, was evaluated in a phase 1/2 study in patients with various B-cell malignancies. In the subgroup of patients with relapsed/refractory (R/R) mantle cell lymphoma (MCL), zanubrutinib was administered as 160 mg twice daily (n = 14), 320 mg once daily (n = 18), or ≤160 mg total dose (n = 5). Herein, we report results for patients receiving a total daily dose of 320 mg (N = 32).

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Background: In primary central nervous system lymphoma (PCNSL), small enhancing lesions can persist after treatment. It is unknown whether a difference in response category (complete response [CR], complete response unconfirmed [CRu], or partial response [PR]) reflects survival. We aimed to determine the value of a central radiology review on response assessment and whether the extent of response influenced progression-free and/or overall survival.

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Background: To analyze the effect of treatment on neurocognitive functioning and the association of neurocognition with radiological abnormalities in primary central nervous system lymphoma (PCNSL).

Methods: One hundred and ninety-nine patients from a phase III trial (HOVON 105/ALLG NHL 24), randomized to standard chemotherapy with or without rituximab, followed in patients ≤60 years old by 30-Gy whole-brain radiotherapy (WBRT), were asked to participate in a neuropsychological evaluation before and during treatment, and up to 2 years posttreatment. Scores were transformed into a standardized z-score; clinically relevant changes were defined as a change in z-score of ≥1 SD.

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  • * The ASPEN study compared zanubrutinib with ibrutinib in patients with the MYD88 mutation and included a separate group of MYD88WT patients receiving only zanubrutinib.
  • * In the MYD88WT cohort of 26 patients, 27% achieved a very good partial response, and overall survival rates at 18 months were 88%, indicating that zanubrutinib could be an effective treatment for this patient group despite
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  • Bruton tyrosine kinase (BTK) inhibition is an important treatment for Waldenström macroglobulinemia (WM), and the ASPEN study compared ibrutinib and zanubrutinib, two BTK inhibitors, in patients with the disease.
  • In the study, while no patients achieved a complete response, a similar percentage of patients (28% with zanubrutinib vs. 19% with ibrutinib) reached a very good partial response, indicating both drugs are effective but showing no significant difference between them.
  • Zanubrutinib showed a trend toward better response quality and lower rates of adverse effects, particularly cardiovascular issues, although some patients experienced higher rates of neutropenia compared to
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Inhibitors of Bruton's tyrosine kinase (BTK) have established therapeutic activity in patients with Waldenström macroglobulinemia (WM). Zanubrutinib, a potent and selective BTK inhibitor, was evaluated in a phase 1/2 study in patients with WM who were either treatment-naïve (TN) or had relapsed/refractory (R/R) disease. Patients had disease requiring treatment per International Workshop on Waldenström Macroglobulinemia (IWWM) criteria.

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Marginal zone lymphoma of the central nervous system (CNS MZL) is rare. The clinical features, treatment, and prognosis are not well characterized. We performed a multicenter retrospective study of CNS MZL.

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A 75-year-old man with stage IV chronic kidney disease due to type 2 diabetes mellitus, presented with increasing proteinuria and rapidly declining renal function despite excellent glycaemic control. Investigations organised to assess his suitability for renal transplantation included an abdominal CT scan, which revealed extensive intra-abdominal lymphadenopathy. A fluorodeoxyglucose (FDG)-positron emission tomography scan to further characterise the lymphadenopathy demonstrated activity in the lymph nodes, as well as both kidneys.

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Zanubrutinib is a potent and highly selective inhibitor of Bruton tyrosine kinase (BTK). In this first-in-human, open-label, multicenter, phase 1 study, patients in part 1 (3 + 3 dose escalation) had relapsed/refractory B-cell malignancies and received zanubrutinib 40, 80, 160, or 320 mg once daily or 160 mg twice daily. Part 2 (expansion) consisted of disease-specific cohorts, including treatment-naive or relapsed/refractory chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL).

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We present an analysis of 98 consecutive patients with peripheral T-cell lymphoma (PTCL) treated over a 10-year period within Western Australia. The most common frontline therapies were CHO(E)P (47%), HyperCVAD (21%), and reduced intensity therapy or supportive care alone (19%). Median and 4-year overall survival (OS) for the whole cohort were 1.

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Background: The prognosis for primary CNS lymphoma has improved with the use of high-dose methotrexate-based chemotherapy, but patient outcomes remain poor. Rituximab, a chimeric monoclonal antibody that targets the CD20 cell surface protein, has substantial activity in systemic CD20-positive diffuse large B-cell lymphoma, but its efficacy in primary CNS lymphoma is unknown and low penetration of the large rituximab molecule through the blood-brain barrier could limit its effect. We aimed to investigate the addition of rituximab to a high-dose methotrexate-based chemotherapy regimen in patients with newly diagnosed primary CNS lymphoma.

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Background: Ibrutinib compared with ofatumumab significantly improves progression-free and overall survival in patients with previously treated chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL).

Patients And Methods: Measures of well-being were assessed in RESONATE, where previously treated patients with CLL/SLL were randomized to receive ibrutinib 420 mg/day (n = 195) or ofatumumab (n = 196) for up to 24 weeks. Endpoints included hematologic function, Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F), disease-related symptoms, European Organization for Research and Treatment of Cancer Quality of Life Questionnaires Core 30 (EORTC QLQ-C30), and medical resource utilization.

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