"modest contributions" is correct and usable in written English.
You can use it to indicate a small or limited amount of something given or donated, such as money, time, or effort. For example: My friend made modest contributions to our fundraising campaign, but her generosity was greatly appreciated.
We identified multiple genes sharing underlying biological similarities that contributed to disease etiology, but for which common variations made modest contributions to disease risk.
Multidimensional approaches can also be applied to candidate gene identification of other diseases, where multiple genes share underlying biological similarities (e.g. the same pathway or GO term), or contribute to disease etiology but have common variations that make modest contributions to disease risk.
In a mouse endotoxemia model, nonhematopoietic cells were found to contribute only about 50% of the TF-dependent activation of coagulation with modest contributions by endothelial and vascular smooth muscle cells (24).
In 2009 Mr Hu said China could "actively" make modest contributions to international issues.
For my part, I made two modest contributions to the meeting.
Perhaps the dilution in relatively large cells was too effective to detect modest contributions of tracer through preferential flow paths.
There was even a very modest contribution by the CIA General Counsel in remarks at Harvard Law School in April 2012.
Where an employer makes even a modest contribution, pension scheme take-up increases enormously.
Lippmann did not, as Clarke notes, disclose his own modest contribution.
This movie might itself make a modest contribution to rewriting the history of white South Africa.
"I saw what it was like," Mr. Steinhardt recalled, "and made a modest contribution".
