Evidence map›Paper›PMID 41607262›Full record

Observational studyAsia-Pacific journal of clinical oncology2026

Extracranial, Extragonadal Germ Cell Tumors: A Multicenter Australian Case Series.

Kar Ven Cavan Chow, Ciara Conduit, Sophie O'Haire, Anna Kuchel, Shirley Wong, Peter Grimison, Andrew Weickhardt, Ganes Pranavan, James Lynam, Patricia Bastick and 10 more

Abstract readMulticenter StudyObservational Study
In one paragraph

Observational study in Asia-Pacific journal of clinical oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

20 authors.

Kar Ven Cavan ChowSchool of Medicine, The University of Queensland, Brisbane, Queensland, Australia.
Ciara ConduitPersonalised Oncology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Sophie O'HairePersonalised Oncology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Anna KuchelSchool of Medicine, The University of Queensland, Brisbane, Queensland, Australia.
Shirley WongWestern Health, St Albans, Melbourne, Victoria, Australia.
Peter GrimisonChris O'Brien Lifehouse, Camperdown, New South Wales, Australia.
Andrew WeickhardtOlivia Newton-John Cancer Wellness & Research Centre, Melbourne, Victoria, Australia.
Ganes PranavanDepartment of Medical Oncology, The Canberra Hospital, Canberra, Australia.
James LynamDepartment of Medical Oncology, Calvary Mater Newcastle, Newcastle, New South Wales, Australia.
Patricia BastickSouthside Cancer Care, Sydney, New South Wales, Australia.
Jeffrey GohDepartment of Medical Oncology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.
Shomik SenguptaDepartment of Urology Eastern Health, Box Hill, Monash University, Melbourne, Victoria, Australia.
Annabel SmithAshford Cancer Centre (ICON), Adelaide, South Australia, Australia.
Elizabeth LiowPersonalised Oncology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
David CampbellBarwon Health, Geelong, Victoria, Australia.
Ming WongSt Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia.
Kristina ZlaticPersonalised Oncology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Peter GibbsPersonalised Oncology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Ben TranPersonalised Oncology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Chun Loo GanDepartment of Medical Oncology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo describe the treatment pattern and outcomes for patients with extracranial, extragonadal germ cell tumors (EGCTs).

methodsWe conducted a retrospective analysis of male patients with EGCT prospectively registered in the Australian GCT clinical registry (iTestis) since its inception in 2018. Demographics, clinicopathologic features, treatment characteristics, and outcomes were recorded. Data were analyzed using descriptive statistics and the Kaplan-Meier method estimates of overall survival (OS).

resultsOf 1256 patients in the iTestis registry, 33 (3%) had EGCT including 18 (55%) with mediastinal, 14 (42%) with retroperitoneal, and 1 (3%) with a lung primary. The median age was 31 years (range: 24-38), ECOG performance status was 0-1 in 26 (79%), and 21 (64%) were non-seminoma. Chemotherapy was administered upfront in 27 (82%) patients, upfront surgery in four patients (12%), and treatment was unknown in two (6%) patients. The most common chemotherapy regimen was bleomycin/etoposide/cisplatin (BEP) (n = 20, 74%), followed by etoposide/ifosfamide/cisplatin (VIP) (n = 5, 19%) and EP (n = 2, 7%). Post-chemotherapy surgery was carried out in 16 (59%) patients, and 4 (15%) patients received second-line chemotherapy. At a median follow-up of 22.7 months (range: 0-126), no deaths were observed in individuals with retroperitoneal primary (n = 14), seminoma (n = 12), or International Germ Cell Cancer Collaborative Group (IGCCCG) good (n = 15) and intermediate risk (n = 3) disease. Three deaths occurred in patients with mediastinal non-seminoma. The estimated 24-month OS for mediastinal non-seminoma and IGCCCG poor risk disease was 71% (95% confidence interval [CI]: 27%-94%) and 79% (95% CI: 25%-95%), respectively.

conclusionIncidence of EGCT in Australia is consistent with published literature. Treatment patterns reflect international practices. Primary mediastinal non-seminoma has the poorest outcomes. Primary retroperitoneal and primary mediastinal seminomas have excellent outcomes.

Indexed as

Antineoplastic Combined Chemotherapy ProtocolsNeoplasms, Germ Cell and EmbryonalRetroperitoneal NeoplasmsAdultAustraliaHumansMaleMediastinal NeoplasmsRetrospective StudiesYoung AdultAustraliaextragonadal germ cell tumortreatment patterns and outcomes

Identifiers

PMID41607262
PMCPMC13053617

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.