Interesting/amusing/important(?)
UK study below[1]
"We examined {all-cause mortality/overall survival} and {PrCa-specific survival} in 16,340 men by degree and number of relatives with prostate and genetically related cancers (breast, ovarian, and colorectal)."
Unexpectedly, "A stronger FH {family history} was inversely associated with the risk of all-cause and PrCa-specific mortality." Appears that awareness of risk can override an anticipated increase in mortality. Behavioural changes seemingly affect survival in those at high risk.
As we know, the risk of PCa is quite significant if one lives long enough. Perhaps young men should be told that the lifetime risk is akin to having a family history. They should be encouraged to adopt the behaviours of those with familial PCa, including PSA screening.
The originators of the PSA test felt that it was useful for monitoring men with diagnosed PCa, but not as a screening tool. However, the U.S. PSA era quickly became a mass screening phenomenon. Many countries did not buy into that, although the U.K. system did allow men to request the test.
... "studies suggest that around 6% of men undergo prostate-specific antigen (PSA) testing each year in UK" (2017) [3]
whereas, "In 2018, 39.0% of men aged 55-69 years had a PSA test within the past year." - in the US [4]
In the aftermath of the U.S. Preventive Services Task Force [USPSTF] recommendations, the US has moved away from screening. There has been a reduction in overtreatment, but an increase in men diagnosed with advanced PCa. As a cynic, I believe that this was a trade-off intended by the USPSTF.
One of the beliefs of the USPSTF members was that screening did not improve survival:
"The U.S. trial did not demonstrate any prostate cancer mortality reduction. The European trial found a reduction in prostate cancer deaths of approximately one death per 1,000 men screened in a subgroup of men 55 to 69 years of age. This result was heavily influenced by the results of two countries; five of the seven countries reporting results did not have a statistically significant reduction. All-cause mortality in the European trial was nearly identical in the screened and nonscreened groups." [2]
There is no need to rehash the controversy regarding those studies. The above is simply background to the recommendation.
But, IMO, the new UK study shows that screening does affect survival.
... we "found that the stronger their family history, the better they did in terms of overall survival. We looked at the type and timing of patients' diagnoses compared with those of their relatives and found that this effect is likely to be explained by awareness, which indicates the importance of screening and awareness programmes."
-Patrick
[1] pubmed.ncbi.nlm.nih.gov/365...
[2] aafp.org/pubs/afp/issues/20...