Blood test for 50 cancers fails key goal in NHS trial

bbc.com·James Gallagher
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0out of 100
Noticeable — persuasion techniques worth noting

This article wants you to really keep believing in the Multi-cancer blood test, even though it didn't hit its main goal in a big NHS trial. It highlights that the test might still be good for catching aggressive cancers, nudging you to stay optimistic and wait for more results. The article does this by leaning heavily on what authority figures and the company say, even without giving you all the trial data.

FATE Analysis

Four dimensions of psychological manipulation: how content captures Focus, exploits Authority, triggers Tribal identity, and engineers Emotion.

Focus3/10Authority5/10Tribe1/10Emotion3/10
FFocus
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AAuthority
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TTribe
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EEmotion
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Focus signals

unprecedented framing
"At the start of the clinical trial, NHS England described the test as "the beginning of a revolution"."

This quote frames the test as a groundbreaking, revolutionary development, creating anticipation and highlighting its potential to dramatically change cancer detection.

attention capture
"How much attention should be paid to this result, when it was not the main focus of the trial, has become a major debating point."

This statement highlights a central controversy or point of disagreement, drawing the reader's attention to an ongoing debate and making its resolution seem important.

Authority signals

institutional authority
"A blood test which looks for multiple types of cancer has failed to achieve its key objective in a major NHS trial, the company has announced."

The 'NHS trial' lends institutional weight to the findings, implying rigorous and credible research associated with a respected national health service.

expert appeal
"Prof Charles Swanton, who is running the trials within the NHS, told the BBC he was "genuinely very excited" about the reduction in stage four cancers."

Leveraging the title 'Prof' and stating he is 'running the trials within the NHS' establishes Dr. Swanton's expertise and direct involvement, lending weight to his 'excited' endorsement of the stage four results.

expert appeal
"Prof Richard Houlston, from the Institute of Cancer Research, said: "Without mortality data and a transparent account of harms, including false positives, unnecessary procedures, and opportunity cost, claims of population benefit from multi-cancer early detection remain speculative,""

Attributing the statement to 'Prof Richard Houlston, from the Institute of Cancer Research' uses academic credentials and institutional affiliation to bolster the credibility of his cautious assessment, framing it as an expert counterpoint.

Tribe signals

us vs them
"How much attention should be paid to this result, when it was not the main focus of the trial, has become a major debating point. Prof Charles Swanton... said he was 'genuinely very excited'... However, other experts say the focus has to be on the primary endpoint..."

This creates a subtle 'us vs. them' dynamic between those who are excited about the secondary findings (like Prof. Swanton) and 'other experts' who emphasize adherence to the primary endpoint, framing it as a point of contention among professionals.

Emotion signals

urgency
"The Galleri blood test is being trialled on 142,000 NHS patients with the goal of finding cancers early and saving lives."

The phrase 'saving lives' immediately evokes a strong sense of urgency and importance, linking the test directly to a universally desired, life-or-death outcome.

emotional fractionation
"The Galleri blood test... has failed to achieve its key objective... However, the company behind the test, Grail, said there were still positive signs in the data that some of the most aggressive cancers could be prevented."

The article first presents a negative outcome ('failed to achieve its key objective') followed immediately by a positive spin ('still positive signs'), creating an emotional up-and-down that maintains reader engagement and leaves room for hope despite initial disappointment.

urgency
"I've been working in oncology for 20 years and the key, in my mind, is to reduce stage four because these are the cancers we cannot cure,"

Prof. Swanton's statement injects a sense of gravity and urgency by highlighting the incurable nature of stage four cancers, implicitly framing any progress against them as profoundly significant and critical.

Narrative Analysis (PCP)

How the article reshapes thinking: Perception (what beliefs are targeted), Context (what information is shifted or omitted), and Permission (what behavior is being encouraged).

What it wants you to believe

The article aims to instill the belief that while the Multi-cancer blood test had a setback, it still holds significant promise, particularly in detecting the most aggressive cancers. It nudges the reader to believe that the test is a valuable, albeit imperfect, tool in cancer detection.

Context being shifted

The article shifts the context from evaluating the trial based on its pre-defined 'primary endpoint' (overall reduction in later stage cancers) to highlighting a specific, post-hoc analysis showing a reduction in stage four cancers. This re-centers the definition of success around a more specific and severe form of cancer detection.

What it omits

The full data from the three-year NHS trial has not been published, which prevents a comprehensive independent assessment of the trial's methodology, full results, and potential harms (false positives, unnecessary procedures). The article relies on a company's announcement to its investors and selected expert opinions, offering an incomplete picture.

Desired behavior

The reader is nudged toward maintaining optimism and continued interest in the development and future application of the blood test, despite its initial failure to meet the primary goal. It encourages a 'wait and see' stance for future results and potential adoption of similar technologies.

SMRP Pattern

Four manipulation maintenance tactics: Socializing the idea as normal, Minimizing concerns, Rationalizing with logic, and Projecting blame.

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Socializing
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Minimizing
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Rationalizing

"'I've been working in oncology for 20 years and the key, in my mind, is to reduce stage four because these are the cancers we cannot cure,' he said."

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Projecting

Red Flags

High-severity indicators: silencing dissent, coordinated messaging, or weaponizing identity to shut down debate.

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Silencing indicator
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Controlled release (spokesperson test)

"Grail, a US pharmaceutical company, halved in value after the announcement taking its share price back to levels seen at the end of the summer. However, a further analysis looking at stage four cancers alone showed they fell by around a fifth in the study, suggesting the most deadly cancers were being detected at an earlier stage."

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Identity weaponization

Techniques Found(4)

Specific propaganda techniques identified using the SemEval-2023 academic taxonomy of 23 techniques across 6 categories.

Causal OversimplificationSimplification
"The vision is to detect up to 50 types of cancer before the person has any symptoms."

This statement oversimplifies the complex challenge of cancer detection, presenting the test as a straightforward solution to preventing cancer progression by detecting it before symptoms appear, without acknowledging the numerous other factors involved in cancer prognosis and treatment.

Loaded LanguageManipulative Wording
"NHS England described the test as 'the beginning of a revolution'."

The word 'revolution' is highly emotionally charged and suggests a dramatic, positive, and transformative change, framing the test with an exaggerated sense of importance and impact before results are fully clear.

Exaggeration/MinimisationManipulative Wording
"'I've been working in oncology for 20 years and the key, in my mind, is to reduce stage four because these are the cancers we cannot cure,' he said."

While true that stage four cancers are difficult to cure, framing the reduction in stage four cancers as 'the key' and emphasizing 'we cannot cure' these, exaggerates its significance over the trial's primary endpoint, implicitly minimizing the failure to meet that main goal.

Obfuscation/VaguenessManipulative Wording
"'This evidence is an important step and the NHS will carefully study the full results from this major trial in the coming months to help determine how blood tests like this could be used in the future.'"

Phrases like 'important step,' 'carefully study,' and 'determine how blood tests like this could be used' are vague. They acknowledge the trial without committing to a specific positive or negative outcome, nor do they clearly explain the implications of the missed primary goal.

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