Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

54 questions · 62 findings · 4 reviews · Gynaecological, Neuro-oncology and Orphan Cancer

No studies found 12 · 19.4%GRADE not reported 0 · 0%Very low 23 · 37.1%Low 18 · 29%Moderate 9 · 14.5%High 0 · 0%

Vitamin K antagonists vs low molecular weight heparin

All‐cause mortality · ambulatory patients with multiple myeloma receiving immunomodulatory agents

It is very uncertain whether vitamin K antagonist (VKA) changes all‐cause mortality compared with low molecular weight heparin (LMWH) (very low certainty).

2 findings from 1 review

Vitamin K antagonists vs low molecular weight heparin

Symptomatic DVT · ambulatory patients with multiple myeloma receiving immunomodulatory agents

It is very uncertain whether vitamin K antagonist (VKA) changes symptomatic deep vein thrombosis compared with low molecular weight heparin (LMWH) (very low certainty).

2 findings from 1 review

Vitamin K antagonists vs low molecular weight heparin

Pulmonary embolism · ambulatory patients with multiple myeloma receiving immunomodulatory agents

It is very uncertain whether vitamin K antagonist (VKA) changes pulmonary embolism compared with low molecular weight heparin (LMWH) (very low certainty).

2 findings from 1 review

Vitamin K antagonists vs low molecular weight heparin

Major bleeding · ambulatory patients with multiple myeloma receiving immunomodulatory agents

The review found no eligible studies for this question.

2 findings from 1 review

Vitamin K antagonists vs low molecular weight heparin

Minor bleeding · ambulatory patients with multiple myeloma receiving immunomodulatory agents

It is very uncertain whether vitamin K antagonist (VKA) changes minor bleeding compared with low molecular weight heparin (LMWH) (very low certainty).

1 finding from 1 review

Vitamin K antagonists vs no VKA

Symptomatic catheter‐related thrombosis (up to 3 months) · people with cancer with thrombosis prophylaxis and central venous catheters

Vitamin K antagonist (VKA) showed no clear difference in symptomatic catheter‐related thrombosis (up to 3 months) compared with no VKA (low certainty).

1 finding from 1 review

Vitamin K antagonists vs no VKA

Symptomatic catheter‐related thrombosis measured as asymptomatic catheter‐related thrombosis (up to 3 months) · people with cancer with thrombosis prophylaxis and central venous catheters

It is very uncertain whether vitamin K antagonist (VKA) changes symptomatic catheter‐related thrombosis measured as asymptomatic… compared with no VKA (very low certainty).

1 finding from 1 review

Vitamin K antagonists vs no VKA

Antibiotic versus heparin only lock/flush solution: catheter‐related infections · people with cancer with thrombosis prophylaxis and central venous catheters

Vitamin K antagonist (VKA) showed no clear difference in catheter‐related infection (3 months) compared with no VKA (low certainty).

1 finding from 1 review

Vitamin K antagonist (VKA) prophylaxis vs no prophylaxis

Mortality at 6 months: main analysis · ambulatory people with cancer without venous thromboembolism receiving systemic therapy

Vitamin K antagonist (VKA) prophylaxis showed no clear difference in mortality at 6 months: main analysis compared with no prophylaxis (moderate certainty).

1 finding from 1 review

Vitamin K antagonist (VKA) prophylaxis vs no prophylaxis

All‐cause mortality · ambulatory people with cancer without venous thromboembolism receiving systemic therapy

Vitamin K antagonist (VKA) prophylaxis showed no clear difference in mortality compared with no prophylaxis (moderate certainty).

1 finding from 1 review

Vitamin K antagonist (VKA) prophylaxis vs no prophylaxis

Pulmonary embolism · ambulatory people with cancer without venous thromboembolism receiving systemic therapy

It is very uncertain whether vitamin K antagonist (VKA) prophylaxis changes pulmonary embolism compared with no prophylaxis (very low certainty).

1 finding from 1 review

Vitamin K antagonist (VKA) prophylaxis vs no prophylaxis

Symptomatic DVT · ambulatory people with cancer without venous thromboembolism receiving systemic therapy

It is very uncertain whether vitamin K antagonist (VKA) prophylaxis changes symptomatic deep vein thrombosis compared with no prophylaxis (very low certainty).

1 finding from 1 review

Vitamin K antagonist (VKA) prophylaxis vs no prophylaxis

Major bleeding · ambulatory people with cancer without venous thromboembolism receiving systemic therapy

Vitamin K antagonist (VKA) prophylaxis probably leads to higher major bleeding compared with no prophylaxis (moderate certainty).

1 finding from 1 review