2020
DOI: 10.3390/cancers12040998
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Impact of Use of Gastric-Acid Suppressants and Oral Anti-Cancer Agents on Survival Outcomes: A Systematic Review and Meta-Analysis

Abstract: We performed a systematic review and meta-analysis to evaluate the role of gastric acid suppressant use on outcomes of tyrosine kinase inhibitors (TKIs) and oral chemotherapy. We identified all research evaluating the effect of GAS (gastric acid suppressants) use on patients receiving oral chemotherapy or TKIs for solid tumors. The pooled hazard ratios (HRs) and 95% confidence interval (95%CI) for overall survival (OS) and progression-free survival (PFS) were calculated with a fixed-effects or a random effects… Show more

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Cited by 26 publications
(35 citation statements)
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References 43 publications
(58 reference statements)
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“…OS (HR =1.46, 95% CI: 1.27-1.67; P<0.00001; Figure 3) and PFS (HR =1.63, 95% CI: 1.35-1.98; P<0.00001; Figure 4) both favored patients treated with EGFR TKI only. Similar to a previous meta-analysis on the impact of concurrent administration of EGFR TKIs and AS on various cancers (33), this meta-analysis found better survival outcomes for OS and PFS when only EGFR-TKIs were used. When combined with AS medications that lower the gastric pH, the alterations in pharmacokinetics of oral EGFR-TKIs led to a decrease in absorption and bioavailability of these drugs, possibly increasing the risk of disease progression and eventually poorer survival.…”
Section: Discussionsupporting
confidence: 79%
See 1 more Smart Citation
“…OS (HR =1.46, 95% CI: 1.27-1.67; P<0.00001; Figure 3) and PFS (HR =1.63, 95% CI: 1.35-1.98; P<0.00001; Figure 4) both favored patients treated with EGFR TKI only. Similar to a previous meta-analysis on the impact of concurrent administration of EGFR TKIs and AS on various cancers (33), this meta-analysis found better survival outcomes for OS and PFS when only EGFR-TKIs were used. When combined with AS medications that lower the gastric pH, the alterations in pharmacokinetics of oral EGFR-TKIs led to a decrease in absorption and bioavailability of these drugs, possibly increasing the risk of disease progression and eventually poorer survival.…”
Section: Discussionsupporting
confidence: 79%
“…The findings of this study are limited to NSCLC patients receiving first-generation EGFR TKIs (erlotinib and gefitinib). The clinical effect of AS on afatinib efficacy has not been delineated and past studies have also reported that afatinib remained soluble across a wide pH range of 1-7 (33). Other EGFR TKIs such as second-generation dacomitinib and third generation osimertinib were also not analyzed in this study.…”
Section: Rashmentioning
confidence: 99%
“…The pH surface value can be calculated using the Mooney-Stella equation [21][22][23][24]. The solid surface solubility (S surface, ST ) can be calculated from pH surface and S 0 , similar to Equation (7). The dissolution rate coefficient in the stomach (k diss, ST ) can be calculated as,…”
Section: Dissolution Rate In the Stomachmentioning
confidence: 99%
“…In the case of poorly soluble weak base drugs, gastric dissolution can have a marked impact on their oral absorption. Drug-drug interactions (DDI) with gastric acid-reducing agents (ARA), such as antacids, H 2 blockers, and proton pump inhibitors, are of great clinical importance, as they could reduce the efficacy of a drug by interfering with gastric dissolution [ 6 , 7 , 8 ]. In addition, elderly subjects tend to be achlorhydric [ 9 , 10 ].…”
Section: Introductionmentioning
confidence: 99%
“…ADH expression has the potential to be a prognostic marker of pancreatic adenocarcinoma[ 25 ], and acetaldehyde is recognized to elevate the possibility of chemically induced rectal carcinogenesis[ 26 ]. A recent meta-analysis revealed that gastric acid suppressant use showed a significant correlation with poor survival for patients receiving oral chemotherapy for gastrointestinal tract cancer, supporting a possible negative impact of gastric acid suppressants on the survival outcome of CRC[ 27 ]. As one of the most fundamental requirements for biosynthesis, nitrogen metabolism is utilized and modulated to sustain the increased demand for nitrogen sources in cancer proliferation[ 28 ].…”
Section: Discussionmentioning
confidence: 99%