Evidence map›Paper›PMID 27899805›Full record

ArticleLeukemia2017

Circulating tumour DNA analysis demonstrates spatial mutational heterogeneity that coincides with disease relapse in myeloma.

S Mithraprabhu, T Khong, M Ramachandran, A Chow, D Klarica, L Mai, S Walsh, D Broemeling, A Marziali, M Wiggin and 4 more

Abstract read
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In one paragraph

Article in Leukemia, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 1 pooled it
–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

71 citing papers in PubMed, 1 synthesis or guideline pooled it.

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11 more citing papers are in PubMed but not listed here.

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

14 authors.

S MithraprabhuMyeloma Research Group, Australian Centre for Blood Diseases, Alfred Hospital/Monash University, Melbourne, VIC, Australia.
T KhongMyeloma Research Group, Australian Centre for Blood Diseases, Alfred Hospital/Monash University, Melbourne, VIC, Australia.
M RamachandranMyeloma Research Group, Australian Centre for Blood Diseases, Alfred Hospital/Monash University, Melbourne, VIC, Australia.
A ChowAdelaide Cancer Centre, Adelaide, SA, Australia.
D KlaricaMalignant Hematology and Stem Cell Transplantation, Alfred Hospital, Melbourne, VIC, Australia.
L MaiBoreal Genomics, Vancouver, BC, Canada.
S WalshBoreal Genomics, Vancouver, BC, Canada.
D BroemelingBoreal Genomics, Vancouver, BC, Canada.
A MarzialiBoreal Genomics, Vancouver, BC, Canada.
M WigginBoreal Genomics, Vancouver, BC, Canada.
J HockingMyeloma Research Group, Australian Centre for Blood Diseases, Alfred Hospital/Monash University, Melbourne, VIC, Australia.
A KalffMyeloma Research Group, Australian Centre for Blood Diseases, Alfred Hospital/Monash University, Melbourne, VIC, Australia.
B DurieCedars-Sinai Comprehensive Cancer Center, Los Angeles, CA, USA.
A SpencerMyeloma Research Group, Australian Centre for Blood Diseases, Alfred Hospital/Monash University, Melbourne, VIC, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mutational characterisation in multiple myeloma (MM) currently relies on bone marrow (BM) biopsy, which fails to capture the putative spatial and genetic heterogeneity of this multifocal disease. Analysis of plasma (PL)-derived circulating free tumour DNA (ctDNA) as an adjunct to BM biopsy, for mutational characterisation and tracking disease progression, was evaluated. Paired BM MM cell DNA and ctDNA from 33 relapsed/refractory (RR) and 15 newly diagnosed (ND) patients were analysed for KRAS, NRAS, BRAF and TP53 mutations using the OnTarget Mutation Detection (OMD) platform. OMD detected 128 mutations (PL=31, BM=59, both=38) indicating the presence of PL mutations (54%). A higher frequency of PL-only mutations was detected in RR patients than ND (27.2% vs 6.6%, respectively), authenticating the existence of spatial and genetic heterogeneity in advanced disease. Activating RAS mutations were more highly prevalent than previously described with 69% harboring at least one RAS mutation. Sequential ctDNA quantitation with droplet digital PCR through longitudinal PL tracking of specific clones in seven patients demonstrated changes in fractional abundance of certain clones reflective of the disease status. We conclude that ctDNA analysis as an adjunct to BM biopsy represents a noninvasive and holistic strategy for improved mutational characterisation and therapeutic monitoring of MM.

Indexed as

MutationCell SeparationDNA, NeoplasmHumansMAP Kinase Signaling SystemMultiple MyelomaProto-Oncogene Proteins p21(ras)ras ProteinsRecurrenceDNA, NeoplasmKRAS protein, humanProto-Oncogene Proteins p21(ras)ras Proteins

Identifiers

PMID27899805

What OpenQuestion holds

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Registered trials

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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.