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Trastuzumab Induces an Immediate, Transient Volume Increase in Humans: A Randomised Placebo-Controlled Trial.

Reijers JA, Burggraaf J - EBioMedicine (2015)

Bottom Line: Troponin-T concentrations did not increase.Single dose administration of trastuzumab in humans is associated with an immediate, transient extracellular volume increase, either as a primary or secondary (compensatory) response, which can be detected easily using routine clinical assessments.Echocardiographic changes, both short and long term, could not be found after single dose administration to drug-naive patients.

View Article: PubMed Central - PubMed

Affiliation: Centre for Human Drug Research, Leiden, The Netherlands.

ABSTRACT

Background: The exact extent of and the mechanism by which trastuzumab causes cardiac side effects are not completely unravelled. We investigated the (cardiotoxic) side effects of trastuzumab in a relatively large homogeneous population.

Methods: Healthy male volunteers (n = 54) with a left ventricle ejection fraction (LVEF) > 55% were administered 6 mg/kg trastuzumab (n = 46) IV in 90 min in a placebo-controlled, parallel study. Placebo consisted of 0 · 9% NaCl (n = 8). Assessments included body weight, routine and cardiac laboratory markers and serial echocardiographic examinations (8 placebo and 9 trastuzumab treated participants) up to 63 days after dosing. Statistical analysis was done using repeated measurements of variance.

Findings: Following trastuzumab infusion, fluid retention was observed: mean body weight increased over the first 4 days post-administration with 0 · 4 kg (95%-confidence interval: - 0 · 2, 0 · 9, p = 0 · 2261) compared to placebo, mean haemoglobin concentration decreased with 0 · 3 mM (- 0 · 6, - 0 · 1; p = 0 · 0043), as did haematocrit (- 0 · 013 L/L [- 0 · 024, - 0 · 002], p = 0 · 0216), and protein (- 2 g/L [- 4, - 0], p = 0 · 0443) and albumin (- 2 g/L [- 3, - 1], p < 0 · 0001) concentrations. Elevations in NT-proBNP levels, parallel to the weight increase, were observed in individual cases, but not on a group level. Troponin-T concentrations did not increase. The only echocardiographic parameter that changed significantly at all studied dose levels was E/A-ratio, a load-dependent parameter: from 1 · 81 (SD 0 · 42) to 1 · 98 (0 · 31) 3-5 days after administration, contrast to placebo of 0 · 57 (90%-CI: 0 · 21-0 · 93, p = 0 · 0034). Ejection fraction and pulsed-wave Doppler recorded parameters remained unchanged.

Interpretation: Single dose administration of trastuzumab in humans is associated with an immediate, transient extracellular volume increase, either as a primary or secondary (compensatory) response, which can be detected easily using routine clinical assessments. Echocardiographic changes, both short and long term, could not be found after single dose administration to drug-naive patients.

No MeSH data available.


Related in: MedlinePlus

Echocardiographic results.Time profile of selected echocardiographic parameters, displayed as mean (SD).
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f0020: Echocardiographic results.Time profile of selected echocardiographic parameters, displayed as mean (SD).

Mentions: Treatment effects on the echocardiographic parameters were less straightforward (Table 4). The LVEF increased relatively by 1 · 9% compared to placebo. Fractional shortening (FS) followed the LVEF closely. The deceleration time (DT) and TAPSE values increased with a mean difference versus placebo of respectively 31 · 0% and 9 · 9%, whereas S′ and E′ values remained stable (Fig. 4).


Trastuzumab Induces an Immediate, Transient Volume Increase in Humans: A Randomised Placebo-Controlled Trial.

Reijers JA, Burggraaf J - EBioMedicine (2015)

Echocardiographic results.Time profile of selected echocardiographic parameters, displayed as mean (SD).
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4563119&req=5

f0020: Echocardiographic results.Time profile of selected echocardiographic parameters, displayed as mean (SD).
Mentions: Treatment effects on the echocardiographic parameters were less straightforward (Table 4). The LVEF increased relatively by 1 · 9% compared to placebo. Fractional shortening (FS) followed the LVEF closely. The deceleration time (DT) and TAPSE values increased with a mean difference versus placebo of respectively 31 · 0% and 9 · 9%, whereas S′ and E′ values remained stable (Fig. 4).

Bottom Line: Troponin-T concentrations did not increase.Single dose administration of trastuzumab in humans is associated with an immediate, transient extracellular volume increase, either as a primary or secondary (compensatory) response, which can be detected easily using routine clinical assessments.Echocardiographic changes, both short and long term, could not be found after single dose administration to drug-naive patients.

View Article: PubMed Central - PubMed

Affiliation: Centre for Human Drug Research, Leiden, The Netherlands.

ABSTRACT

Background: The exact extent of and the mechanism by which trastuzumab causes cardiac side effects are not completely unravelled. We investigated the (cardiotoxic) side effects of trastuzumab in a relatively large homogeneous population.

Methods: Healthy male volunteers (n = 54) with a left ventricle ejection fraction (LVEF) > 55% were administered 6 mg/kg trastuzumab (n = 46) IV in 90 min in a placebo-controlled, parallel study. Placebo consisted of 0 · 9% NaCl (n = 8). Assessments included body weight, routine and cardiac laboratory markers and serial echocardiographic examinations (8 placebo and 9 trastuzumab treated participants) up to 63 days after dosing. Statistical analysis was done using repeated measurements of variance.

Findings: Following trastuzumab infusion, fluid retention was observed: mean body weight increased over the first 4 days post-administration with 0 · 4 kg (95%-confidence interval: - 0 · 2, 0 · 9, p = 0 · 2261) compared to placebo, mean haemoglobin concentration decreased with 0 · 3 mM (- 0 · 6, - 0 · 1; p = 0 · 0043), as did haematocrit (- 0 · 013 L/L [- 0 · 024, - 0 · 002], p = 0 · 0216), and protein (- 2 g/L [- 4, - 0], p = 0 · 0443) and albumin (- 2 g/L [- 3, - 1], p < 0 · 0001) concentrations. Elevations in NT-proBNP levels, parallel to the weight increase, were observed in individual cases, but not on a group level. Troponin-T concentrations did not increase. The only echocardiographic parameter that changed significantly at all studied dose levels was E/A-ratio, a load-dependent parameter: from 1 · 81 (SD 0 · 42) to 1 · 98 (0 · 31) 3-5 days after administration, contrast to placebo of 0 · 57 (90%-CI: 0 · 21-0 · 93, p = 0 · 0034). Ejection fraction and pulsed-wave Doppler recorded parameters remained unchanged.

Interpretation: Single dose administration of trastuzumab in humans is associated with an immediate, transient extracellular volume increase, either as a primary or secondary (compensatory) response, which can be detected easily using routine clinical assessments. Echocardiographic changes, both short and long term, could not be found after single dose administration to drug-naive patients.

No MeSH data available.


Related in: MedlinePlus