The phrase "a substantial proportion of current" is correct and usable in written English.
It can be used when discussing a significant part of something that is ongoing or present, often in contexts like research, statistics, or analysis.
Example: "A substantial proportion of current research indicates that climate change is accelerating at an alarming rate."
Alternatives: "a significant share of current" or "a considerable amount of current".
Health officials suspect that a substantial proportion of current H.I.V. transmission is from people who do not know they are infected.
Therefore, a substantial proportion of current residents of care homes will continue to require support in future years.
In the research literature, unmet rehabilitation needs have been documented among a substantial proportion of current and former patients with cancer with negative effect on quality of life, ability to return to work and morbidity.
Secondary wood heating is partly missing from the estimates although it is a substantial proportion of the current emissions.
Current cure rates in younger adult patients (age <60 years) average approximately 40% and are even lower in the elderly. 1 A substantial proportion of our current knowledge about AML prognosis is based on data from clinical trials.
As we selected these 17 HC monkeys primarily because they are ancestral to a substantial proportion of the current pedigree, we considered it likely that variants observed in only one or a few monkeys in this set would not be well represented in the pedigree overall.
A substantial proportion of pesticides in current use are known to be neurotoxic.
In our series, tumors of grade 2 represent 46% of the whole cohort, confirming previous observations that this constitutes a substantial proportion of cases in current routine breast cancer diagnostics [ 41].
Persistence of biological abnormalities in RA FLS or synovial tissue despite disease-modifying treatment is supported by a substantial proportion of nonresponders and the transient effects of current gold standard treatment such as anti-TNF biologics.
Much of the residual heritability underlying common traits appears to lie in SNPs that do not achieve genome-wide significance, meaning that a substantial proportion of the associated genetic signal in current GWAS is hidden below the genome-wide significance threshold.
Of course, there was also a substantial proportion of respondents who found flaws with the current CTA approach.
