3. Revenue Recognition and Collaborative Arrangements

In May 2014, the FASB issued a new comprehensive revenue recognition standard, ASC 606. We adopted this standard on January 1, 2018 on a modified prospective basis. Under the new guidance, revenue is recognized when our customer obtains control of promised goods or services, in an amount that reflects the consideration which we expect to receive in exchange for those goods or services. Revenue is recognized through a five-step process: (i) identify the contract with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price for the contract; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) a performance obligation is satisfied.

Adoption of this standard did not have an impact on the method in which we account for royalties, our main source of revenue. We continue to recognize the royalty revenue on licensee net sales of products with respect to which we have contractual royalty rights in the period in which the royalties are earned and reported to us. Royalties are recognized net of amortization of capitalized fees associated with any approval and launch milestone payments made to GSK.

Net Revenue from Collaborative Arrangements

Net revenue recognized under our GSK Agreements was as follows:

	Three Months Ended March 31,
(In thousands)	2018			2017
Royalties from a related party - RELVAR/BREO	$	46,160		$	38,689
Royalties from a related party - ANORO	8,724			5,038
Royalties from a related party - TRELEGY	952			—

Total royalties from a related party	55,836			43,727
Less: amortization of capitalized fees paid to a related party	(3,456		)	(3,456		)

Royalty revenue	52,380			40,271
Strategic alliance - MABA program license	—			221

Total net revenue from GSK	$	52,380		$	40,492

LABA Collaboration

As a result of the launch and approval of RELVAR®/BREO® ELLIPTA® and ANORO® ELLIPTA® in the U.S., Japan and Europe, we paid milestone fees to GSK totaling $220.0 million during the year ended December 31, 2014. Although we have no further milestone payment obligations to GSK pursuant to the LABA Collaboration Agreement, we continue to have ongoing participation as part of the collaboration, including joint steering and joint project committees that are expected to continue over the life of the agreement. The milestone fees paid to GSK were recognized as capitalized fees paid to a related party, which are being amortized over their estimated useful lives commencing upon the commercial launch of the product. The amortization expense is recorded as a reduction to the royalties from GSK.

We are entitled to receive annual royalties from GSK on sales of RELVAR®/BREO® ELLIPTA® as follows: 15% on the first $3.0 billion of annual global net sales and 5% for all annual global net sales above $3.0 billion. Sales of single-agent LABA medicines and combination medicines would be combined for the purposes of this royalty calculation. For other products combined with a LABA from the LABA Collaboration, such as ANORO® ELLIPTA®, which royalties are upward tiering and range from 6.5% to 10%.

We are also entitled to 15% of any future royalty payments made by GSK under its agreements originally entered into with us, and since assigned to TRC, including TRELEGY® ELLIPTA®, which royalties are upward tiering and range from 6.5% to 10%